From 32da38b24f82562a5e4392d6140ca35873066565 Mon Sep 17 00:00:00 2001
From: gosangam <sangam4742@gmail.com>
Date: Sun, 10 May 2026 00:35:14 +0530
Subject: [PATCH] feat: implement bff layer

---
 app/api/books/[book]/route.ts                 |    8 +-
 app/api/books/[book]/verses/route.ts          |   58 +-
 app/api/books/route.ts                        |    6 +-
 app/api/glossary/route.ts                     |    6 +-
 app/books/bbd/page.tsx                        |    1 -
 app/books/bk/[chapter]/page.tsx               |    9 +-
 app/books/bs/page.tsx                         |    2 -
 app/books/cbhc/[chapter]/page.tsx             |    9 +-
 app/books/ds/page.tsx                         |    1 -
 app/books/ej/page.tsx                         |    1 -
 app/books/ek/page.tsx                         |    1 -
 app/books/gg/[chapter]/page.tsx               |    9 +-
 app/books/gg/page.tsx                         |    2 -
 app/books/hkh/page.tsx                        |    1 -
 app/books/iso/[mantra]/page.tsx               |   11 +-
 app/books/iso/page.tsx                        |    3 -
 app/books/kb/[volume]/page.tsx                |    2 -
 app/books/lcl/[chapter]/page.tsx              |    9 +-
 app/books/lcl/page.tsx                        |    2 -
 app/books/lob/page.tsx                        |    1 -
 app/books/mg/page.tsx                         |    1 -
 app/books/mm/page.tsx                         |    1 -
 app/books/mog/page.tsx                        |    1 -
 app/books/nbs/page.tsx                        |    1 -
 app/books/nod/[chapter]/page.tsx              |    9 +-
 app/books/nod/page.tsx                        |    1 -
 app/books/noi/page.tsx                        |    3 -
 app/books/ochkm/page.tsx                      |    1 -
 app/books/owk/page.tsx                        |    1 -
 app/books/poy/page.tsx                        |    1 -
 app/books/pqpa/[chapter]/page.tsx             |    9 +-
 app/books/pqpa/page.tsx                       |    2 -
 app/books/rv/page.tsx                         |    1 -
 app/books/ssr/page.tsx                        |    2 -
 app/books/sva/page.tsx                        |    2 -
 app/books/tlc/[chapter]/page.tsx              |   85 +-
 app/books/tlc/page.tsx                        |    1 -
 app/books/tlk/[chapter]/page.tsx              |    9 +-
 app/books/tlk/page.tsx                        |    2 -
 app/books/tqk/[chapter]/page.tsx              |    9 +-
 app/books/tqk/page.tsx                        |    2 -
 app/essays/[slug]/page.tsx                    |   38 +-
 app/essays/page.tsx                           |   12 +-
 .../[slug]/play-audio-button.tsx              |    6 +-
 app/transcriptions/place/[place]/page.tsx     |   15 +-
 .../type/[type]/type-browser.tsx              |   14 +-
 components/site-footer.tsx                    |    2 +-
 lib/api.ts                                    |  341 +++--
 lib/bbd.ts                                    |  275 +---
 lib/bff.ts                                    |  123 ++
 lib/bk.ts                                     |  314 +----
 lib/books.ts                                  |  368 +++++
 lib/bs.ts                                     |  379 +----
 lib/cbhc.ts                                   |  314 +----
 lib/db.ts                                     |   11 -
 lib/disciples.ts                              |  246 ++--
 lib/ds.ts                                     |  344 +----
 lib/ej.ts                                     |  277 +---
 lib/ek.ts                                     |  275 +---
 lib/gg.ts                                     |  464 +-----
 lib/hkh.ts                                    |  301 +---
 lib/iso.ts                                    |  354 +----
 lib/journals.ts                               |  117 +-
 lib/lcl.ts                                    |  462 +-----
 lib/letters.ts                                |  256 ++--
 lib/lob.ts                                    |  448 +-----
 lib/magazines.ts                              |  130 +-
 lib/mg.ts                                     |  275 +---
 lib/mog.ts                                    |  447 +-----
 lib/nod.ts                                    |  351 +----
 lib/noi.ts                                    |  323 +----
 lib/ochkm.ts                                  |  277 +---
 lib/other-documents.ts                        |  142 +-
 lib/owk.ts                                    |  275 +---
 lib/pk.ts                                     |  321 +----
 lib/poy.ts                                    |  275 +---
 lib/pqpa.ts                                   |  357 +----
 lib/rv.ts                                     |  275 +---
 lib/ssr.ts                                    |  355 +----
 lib/sva.ts                                    |  521 +------
 lib/te.ts                                     |  196 +--
 lib/tlc.ts                                    |  309 +---
 lib/tlk.ts                                    |  470 +------
 lib/tqk.ts                                    |  466 +-----
 lib/transcriptions.ts                         |  276 ++--
 lib/ttp.ts                                    |  297 +---
 lib/va.ts                                     |  182 +--
 package.json                                  |    5 -
 prisma.config.ts                              |    9 -
 prisma/schema.prisma                          |  398 ------
 yarn.lock                                     | 1244 +----------------
 91 files changed, 2434 insertions(+), 11784 deletions(-)
 create mode 100644 lib/bff.ts
 create mode 100644 lib/books.ts
 delete mode 100644 lib/db.ts
 delete mode 100644 prisma.config.ts
 delete mode 100644 prisma/schema.prisma

diff --git a/app/api/books/[book]/route.ts b/app/api/books/[book]/route.ts
index 3098a9f0..2e71cc78 100644
--- a/app/api/books/[book]/route.ts
+++ b/app/api/books/[book]/route.ts
@@ -1,12 +1,12 @@
 import { NextResponse } from "next/server";
-import { prisma } from "@/lib/db";
+import { getBookMeta } from "@/lib/api";
 
 export async function GET(
   _req: Request,
-  { params }: { params: Promise<{ book: string }> }
+  { params }: { params: Promise<{ book: string }> },
 ) {
   const { book } = await params;
-  const meta = await prisma.bookMeta.findUnique({ where: { book } });
+  const meta = await getBookMeta(book);
   if (!meta) return NextResponse.json({ error: "Not found" }, { status: 404 });
-  return NextResponse.json({ book: meta.book, ...meta.data as Record<string, unknown> });
+  return NextResponse.json(meta);
 }
diff --git a/app/api/books/[book]/verses/route.ts b/app/api/books/[book]/verses/route.ts
index 11eecd8a..6947d572 100644
--- a/app/api/books/[book]/verses/route.ts
+++ b/app/api/books/[book]/verses/route.ts
@@ -1,5 +1,9 @@
 import { NextResponse } from "next/server";
-import { prisma } from "@/lib/db";
+import {
+  getSingleVerse,
+  getChapterVerseIndex,
+  getChapterVerses,
+} from "@/lib/api";
 
 export async function GET(
   req: Request,
@@ -7,7 +11,7 @@ export async function GET(
 ) {
   const { book } = await params;
   const url = new URL(req.url);
-  const division = url.searchParams.get("division");
+  const division = url.searchParams.get("division") || null;
   const chapterStr = url.searchParams.get("chapter");
   const verseStr = url.searchParams.get("verse");
   const indexOnly = url.searchParams.get("indexOnly") === "true";
@@ -22,20 +26,18 @@ export async function GET(
   }
 
   const chapter = parseInt(chapterStr);
-  const where: Record<string, unknown> = { book, chapter };
 
-  if (book === "bg") {
-    where.division = null;
-  } else if (division) {
-    where.division = division;
-  }
+  const effectiveDivision = book === "bg" ? null : division;
 
   // --- Single verse mode: ?verse=N ---
   if (verseStr) {
     const verseNum = parseInt(verseStr);
-    const verse = await prisma.verse.findFirst({
-      where: { ...where, verse: verseNum },
-    });
+    const verse = await getSingleVerse(
+      book,
+      effectiveDivision,
+      chapter,
+      verseNum,
+    );
 
     if (!verse) {
       return NextResponse.json({ error: "Verse not found" }, { status: 404 });
@@ -46,15 +48,7 @@ export async function GET(
 
   // --- Index-only mode: return lightweight verse list for the sidebar ---
   if (indexOnly) {
-    const verses = await prisma.verse.findMany({
-      where,
-      orderBy: { verse: "asc" },
-      select: {
-        verse: true,
-        verseEnd: true,
-        reference: true,
-      },
-    });
+    const verses = await getChapterVerseIndex(book, effectiveDivision, chapter);
 
     return NextResponse.json({ verses, total: verses.length });
   }
@@ -62,24 +56,14 @@ export async function GET(
   // --- Paginated mode: return full verse data in pages ---
   const page = Math.max(1, parseInt(pageStr || "1"));
   const limit = Math.min(100, Math.max(1, parseInt(limitStr || "20")));
-  const skip = (page - 1) * limit;
 
-  const [verses, total] = await Promise.all([
-    prisma.verse.findMany({
-      where,
-      orderBy: { verse: "asc" },
-      skip,
-      take: limit,
-    }),
-    prisma.verse.count({ where }),
-  ]);
-
-  return NextResponse.json({
-    verses,
-    total,
+  const result = await getChapterVerses(
+    book,
+    effectiveDivision,
+    chapter,
     page,
     limit,
-    totalPages: Math.ceil(total / limit),
-    hasMore: skip + verses.length < total,
-  });
+  );
+
+  return NextResponse.json(result);
 }
diff --git a/app/api/books/route.ts b/app/api/books/route.ts
index 007f02dd..81b74b52 100644
--- a/app/api/books/route.ts
+++ b/app/api/books/route.ts
@@ -1,7 +1,7 @@
 import { NextResponse } from "next/server";
-import { prisma } from "@/lib/db";
+import { getAllBooks } from "@/lib/api";
 
 export async function GET() {
-  const metas = await prisma.bookMeta.findMany();
-  return NextResponse.json(metas.map((m) => ({ book: m.book, ...m.data as Record<string, unknown> })));
+  const books = await getAllBooks();
+  return NextResponse.json(books);
 }
diff --git a/app/api/glossary/route.ts b/app/api/glossary/route.ts
index ab2c6a2e..24084b68 100644
--- a/app/api/glossary/route.ts
+++ b/app/api/glossary/route.ts
@@ -1,9 +1,7 @@
 import { NextResponse } from "next/server";
-import { prisma } from "@/lib/db";
+import { getAllGlossaryEntries } from "@/lib/api";
 
 export async function GET() {
-  const entries = await prisma.glossaryEntry.findMany({
-    orderBy: { term: "asc" },
-  });
+  const entries = await getAllGlossaryEntries();
   return NextResponse.json(entries);
 }
diff --git a/app/books/bbd/page.tsx b/app/books/bbd/page.tsx
index de54184e..68d7c31f 100644
--- a/app/books/bbd/page.tsx
+++ b/app/books/bbd/page.tsx
@@ -60,7 +60,6 @@ export default async function BbdPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/bk/[chapter]/page.tsx b/app/books/bk/[chapter]/page.tsx
index 575d63d1..bc062030 100644
--- a/app/books/bk/[chapter]/page.tsx
+++ b/app/books/bk/[chapter]/page.tsx
@@ -162,14 +162,7 @@ function SidebarLink({
   item: BkSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/bs/page.tsx b/app/books/bs/page.tsx
index fbe5f68c..a59f9124 100644
--- a/app/books/bs/page.tsx
+++ b/app/books/bs/page.tsx
@@ -118,7 +118,6 @@ export default async function BsPage() {
                           {introduction.title}
                         </p>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {introduction.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -133,7 +132,6 @@ export default async function BsPage() {
                           {foreword.title}
                         </p>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {foreword.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/cbhc/[chapter]/page.tsx b/app/books/cbhc/[chapter]/page.tsx
index 5b8f7e8c..995a686c 100644
--- a/app/books/cbhc/[chapter]/page.tsx
+++ b/app/books/cbhc/[chapter]/page.tsx
@@ -162,14 +162,7 @@ function SidebarLink({
   item: CbhcSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/ds/page.tsx b/app/books/ds/page.tsx
index 841efa38..8130c6f0 100644
--- a/app/books/ds/page.tsx
+++ b/app/books/ds/page.tsx
@@ -63,7 +63,6 @@ export default async function DsPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/ej/page.tsx b/app/books/ej/page.tsx
index f6d8cc1d..d93e9ead 100644
--- a/app/books/ej/page.tsx
+++ b/app/books/ej/page.tsx
@@ -63,7 +63,6 @@ export default async function EjPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/ek/page.tsx b/app/books/ek/page.tsx
index d5fe520b..c2a92a63 100644
--- a/app/books/ek/page.tsx
+++ b/app/books/ek/page.tsx
@@ -60,7 +60,6 @@ export default async function EkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/gg/[chapter]/page.tsx b/app/books/gg/[chapter]/page.tsx
index e29ce60b..b9548296 100644
--- a/app/books/gg/[chapter]/page.tsx
+++ b/app/books/gg/[chapter]/page.tsx
@@ -217,14 +217,7 @@ function SidebarLink({
   item: GgSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/gg/page.tsx b/app/books/gg/page.tsx
index db054189..7a0d9c1e 100644
--- a/app/books/gg/page.tsx
+++ b/app/books/gg/page.tsx
@@ -64,7 +64,6 @@ export default async function GgPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -126,7 +125,6 @@ export default async function GgPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/hkh/page.tsx b/app/books/hkh/page.tsx
index a4861446..8b07286d 100644
--- a/app/books/hkh/page.tsx
+++ b/app/books/hkh/page.tsx
@@ -60,7 +60,6 @@ export default async function HkhPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/iso/[mantra]/page.tsx b/app/books/iso/[mantra]/page.tsx
index f7f1b1d3..0caa1528 100644
--- a/app/books/iso/[mantra]/page.tsx
+++ b/app/books/iso/[mantra]/page.tsx
@@ -50,8 +50,11 @@ export async function generateMetadata({
   const isVerse_ = content && "mantra" in content && "devanagari" in content;
   const paragraphs = content
     ? isVerse_
-      ? [(content as IsoVerse).translation, ...(content as IsoVerse).purport]
-      : (content as IsoIntroSegment).paragraphs
+      ? [
+          (content as unknown as IsoVerse).translation,
+          ...(content as unknown as IsoVerse).purport,
+        ]
+      : (content as unknown as IsoIntroSegment).paragraphs
     : undefined;
 
   const quote = extractQuoteFromHl(sp, paragraphs);
@@ -64,7 +67,7 @@ export async function generateMetadata({
   }
 
   const title = isVerse_
-    ? `${(content as IsoVerse).reference}: ${(content as IsoVerse).title}`
+    ? `${(content as unknown as IsoVerse).reference}`
     : content && "title" in content
       ? (content as IsoIntroSegment).title
       : `Mantra ${slug}`;
@@ -110,7 +113,7 @@ export default async function IsoMantraPage({
           {verse && (
             <>
               <span className="text-primary">{verse.reference}: </span>
-              {verse.title}
+              {verse.bookTitle}
             </>
           )}
           {intro && intro.title}
diff --git a/app/books/iso/page.tsx b/app/books/iso/page.tsx
index 6495c711..a9c9210c 100644
--- a/app/books/iso/page.tsx
+++ b/app/books/iso/page.tsx
@@ -68,7 +68,6 @@ export default async function IsoPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {frontPages.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -85,7 +84,6 @@ export default async function IsoPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {introduction.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -164,7 +162,6 @@ export default async function IsoPage() {
                         </p>
                       </div>
                       <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                        {aboutAuthor.paragraphs.length} paragraphs
                       </span>
                     </Link>
                   </li>
diff --git a/app/books/kb/[volume]/page.tsx b/app/books/kb/[volume]/page.tsx
index da65ae6b..521ad44b 100644
--- a/app/books/kb/[volume]/page.tsx
+++ b/app/books/kb/[volume]/page.tsx
@@ -72,7 +72,6 @@ export default async function KbVolumePage({
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -106,7 +105,6 @@ export default async function KbVolumePage({
                         </p>
                       </div>
                       <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                        {ch.paragraphs.length} paragraphs
                       </span>
                     </Link>
                   </li>
diff --git a/app/books/lcl/[chapter]/page.tsx b/app/books/lcl/[chapter]/page.tsx
index dbbd9ba4..f9e3bcbf 100644
--- a/app/books/lcl/[chapter]/page.tsx
+++ b/app/books/lcl/[chapter]/page.tsx
@@ -221,14 +221,7 @@ function SidebarLink({
   item: LclSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/lcl/page.tsx b/app/books/lcl/page.tsx
index 189b7e20..3c2722ee 100644
--- a/app/books/lcl/page.tsx
+++ b/app/books/lcl/page.tsx
@@ -64,7 +64,6 @@ export default async function LclPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -126,7 +125,6 @@ export default async function LclPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/lob/page.tsx b/app/books/lob/page.tsx
index fc974ca7..8938fa7d 100644
--- a/app/books/lob/page.tsx
+++ b/app/books/lob/page.tsx
@@ -60,7 +60,6 @@ export default async function LobPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/mg/page.tsx b/app/books/mg/page.tsx
index 8d941904..d994f145 100644
--- a/app/books/mg/page.tsx
+++ b/app/books/mg/page.tsx
@@ -60,7 +60,6 @@ export default async function MgPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/mm/page.tsx b/app/books/mm/page.tsx
index ab754f36..861f8767 100644
--- a/app/books/mm/page.tsx
+++ b/app/books/mm/page.tsx
@@ -116,7 +116,6 @@ export default async function MmPage() {
                         {introduction.title}
                       </p>
                       <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                        {introduction.paragraphs.length} paragraphs
                       </span>
                     </Link>
                   </li>
diff --git a/app/books/mog/page.tsx b/app/books/mog/page.tsx
index 0b9e7210..b34388dc 100644
--- a/app/books/mog/page.tsx
+++ b/app/books/mog/page.tsx
@@ -60,7 +60,6 @@ export default async function MogPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/nbs/page.tsx b/app/books/nbs/page.tsx
index f3fd8fdd..794c1caa 100644
--- a/app/books/nbs/page.tsx
+++ b/app/books/nbs/page.tsx
@@ -116,7 +116,6 @@ export default async function NbsPage() {
                         {introduction.title}
                       </p>
                       <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                        {introduction.paragraphs.length} paragraphs
                       </span>
                     </Link>
                   </li>
diff --git a/app/books/nod/[chapter]/page.tsx b/app/books/nod/[chapter]/page.tsx
index 90da49b2..763a089e 100644
--- a/app/books/nod/[chapter]/page.tsx
+++ b/app/books/nod/[chapter]/page.tsx
@@ -203,14 +203,7 @@ function SidebarLink({
   item: NodSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/nod/page.tsx b/app/books/nod/page.tsx
index 304100ca..de42eb30 100644
--- a/app/books/nod/page.tsx
+++ b/app/books/nod/page.tsx
@@ -70,7 +70,6 @@ export default async function NodPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/noi/page.tsx b/app/books/noi/page.tsx
index 98dd1d5f..6d0a0bc8 100644
--- a/app/books/noi/page.tsx
+++ b/app/books/noi/page.tsx
@@ -65,7 +65,6 @@ export default async function NoiPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {frontPages.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -82,7 +81,6 @@ export default async function NoiPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {preface.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -141,7 +139,6 @@ export default async function NoiPage() {
                         </p>
                       </div>
                       <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                        {appendixes.paragraphs.length} paragraphs
                       </span>
                     </Link>
                   </li>
diff --git a/app/books/ochkm/page.tsx b/app/books/ochkm/page.tsx
index 48d3c4f9..55aaf1b8 100644
--- a/app/books/ochkm/page.tsx
+++ b/app/books/ochkm/page.tsx
@@ -60,7 +60,6 @@ export default async function OchkmPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/owk/page.tsx b/app/books/owk/page.tsx
index c24d5625..9f16d5dd 100644
--- a/app/books/owk/page.tsx
+++ b/app/books/owk/page.tsx
@@ -60,7 +60,6 @@ export default async function OwkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/poy/page.tsx b/app/books/poy/page.tsx
index 44cf5cf5..264bbfa0 100644
--- a/app/books/poy/page.tsx
+++ b/app/books/poy/page.tsx
@@ -60,7 +60,6 @@ export default async function PoyPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/pqpa/[chapter]/page.tsx b/app/books/pqpa/[chapter]/page.tsx
index 70c69f44..52ab51b2 100644
--- a/app/books/pqpa/[chapter]/page.tsx
+++ b/app/books/pqpa/[chapter]/page.tsx
@@ -239,14 +239,7 @@ function SidebarLink({
   item: PqpaSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/pqpa/page.tsx b/app/books/pqpa/page.tsx
index 90880334..64297058 100644
--- a/app/books/pqpa/page.tsx
+++ b/app/books/pqpa/page.tsx
@@ -64,7 +64,6 @@ export default async function PqpaPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -151,7 +150,6 @@ export default async function PqpaPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/rv/page.tsx b/app/books/rv/page.tsx
index f8218701..6be5531c 100644
--- a/app/books/rv/page.tsx
+++ b/app/books/rv/page.tsx
@@ -60,7 +60,6 @@ export default async function RvPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/ssr/page.tsx b/app/books/ssr/page.tsx
index 338c3a97..c86c6ebb 100644
--- a/app/books/ssr/page.tsx
+++ b/app/books/ssr/page.tsx
@@ -64,7 +64,6 @@ export default async function SsrPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -123,7 +122,6 @@ export default async function SsrPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/sva/page.tsx b/app/books/sva/page.tsx
index a776f13f..3a559dbb 100644
--- a/app/books/sva/page.tsx
+++ b/app/books/sva/page.tsx
@@ -64,7 +64,6 @@ export default async function SvaPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -123,7 +122,6 @@ export default async function SvaPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/tlc/[chapter]/page.tsx b/app/books/tlc/[chapter]/page.tsx
index 725c759a..86de2741 100644
--- a/app/books/tlc/[chapter]/page.tsx
+++ b/app/books/tlc/[chapter]/page.tsx
@@ -141,6 +141,31 @@ function TlcSidebar({
   const introItems = items.filter((item) => item.type === "intro-segment");
   const chapterItems = items.filter((item) => item.type === "chapter");
 
+  // Group chapters by part (if parts exist)
+  const hasParts = chapterItems.some((item) => item.partNumber != null);
+
+  const partGroups: {
+    partNumber: number;
+    partTitle: string;
+    chapters: TlcSidebarItem[];
+  }[] = [];
+  if (hasParts) {
+    const partMap = new Map<
+      number,
+      { partTitle: string; chapters: TlcSidebarItem[] }
+    >();
+    for (const item of chapterItems) {
+      const pn = item.partNumber ?? 0;
+      const pt = item.partTitle ?? `Part ${pn}`;
+      if (!partMap.has(pn)) partMap.set(pn, { partTitle: pt, chapters: [] });
+      partMap.get(pn)!.chapters.push(item);
+    }
+    for (const [partNumber, { partTitle, chapters }] of partMap) {
+      partGroups.push({ partNumber, partTitle, chapters });
+    }
+    partGroups.sort((a, b) => a.partNumber - b.partNumber);
+  }
+
   return (
     <aside className="hidden lg:block w-56 shrink-0 sticky top-[89px] self-start max-h-[calc(100vh-89px)] overflow-y-auto py-8 pr-4">
       {/* Front Matter */}
@@ -161,23 +186,40 @@ function TlcSidebar({
         </>
       )}
 
-      {/* Chapters */}
-      {chapterItems.length > 0 && (
-        <>
-          <h2 className="text-xs font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
-            Chapters
-          </h2>
-          <nav className="flex flex-col gap-0.5">
-            {chapterItems.map((item) => (
-              <SidebarLink
-                key={item.slug}
-                item={item}
-                isActive={item.slug === currentSlug}
-              />
-            ))}
-          </nav>
-        </>
-      )}
+      {/* Chapters — grouped by part if available */}
+      {hasParts
+        ? partGroups.map((group) => (
+            <div key={group.partNumber} className="mb-4">
+              <h2 className="text-xs font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
+                {group.partTitle}
+              </h2>
+              <nav className="flex flex-col gap-0.5">
+                {group.chapters.map((item) => (
+                  <SidebarLink
+                    key={item.slug}
+                    item={item}
+                    isActive={item.slug === currentSlug}
+                  />
+                ))}
+              </nav>
+            </div>
+          ))
+        : chapterItems.length > 0 && (
+            <>
+              <h2 className="text-xs font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
+                Chapters
+              </h2>
+              <nav className="flex flex-col gap-0.5">
+                {chapterItems.map((item) => (
+                  <SidebarLink
+                    key={item.slug}
+                    item={item}
+                    isActive={item.slug === currentSlug}
+                  />
+                ))}
+              </nav>
+            </>
+          )}
     </aside>
   );
 }
@@ -189,14 +231,7 @@ function SidebarLink({
   item: TlcSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/tlc/page.tsx b/app/books/tlc/page.tsx
index b83cc86d..9d098615 100644
--- a/app/books/tlc/page.tsx
+++ b/app/books/tlc/page.tsx
@@ -68,7 +68,6 @@ export default async function TlcPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/tlk/[chapter]/page.tsx b/app/books/tlk/[chapter]/page.tsx
index 17b3cafa..749aeafc 100644
--- a/app/books/tlk/[chapter]/page.tsx
+++ b/app/books/tlk/[chapter]/page.tsx
@@ -226,14 +226,7 @@ function SidebarLink({
   item: TlkSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/tlk/page.tsx b/app/books/tlk/page.tsx
index 643f33af..b0a62189 100644
--- a/app/books/tlk/page.tsx
+++ b/app/books/tlk/page.tsx
@@ -64,7 +64,6 @@ export default async function TlkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -126,7 +125,6 @@ export default async function TlkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/books/tqk/[chapter]/page.tsx b/app/books/tqk/[chapter]/page.tsx
index 3a6a09d0..bd48f9cf 100644
--- a/app/books/tqk/[chapter]/page.tsx
+++ b/app/books/tqk/[chapter]/page.tsx
@@ -226,14 +226,7 @@ function SidebarLink({
   item: TqkSidebarItem;
   isActive: boolean;
 }) {
-  let label: string;
-  if (item.type === "chapter" && item.chapter != null) {
-    // Extract just the title portion after "Chapter N: "
-    const titlePart = item.label.replace(/^Chapter \d+:\s*/, "");
-    label = `${item.chapter}. ${titlePart}`;
-  } else {
-    label = item.label;
-  }
+  const label = item.label;
 
   return (
     <Link
diff --git a/app/books/tqk/page.tsx b/app/books/tqk/page.tsx
index 29f23875..2a4f7a47 100644
--- a/app/books/tqk/page.tsx
+++ b/app/books/tqk/page.tsx
@@ -64,7 +64,6 @@ export default async function TqkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
@@ -126,7 +125,6 @@ export default async function TqkPage() {
                           </p>
                         </div>
                         <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
-                          {seg.paragraphs.length} paragraphs
                         </span>
                       </Link>
                     </li>
diff --git a/app/essays/[slug]/page.tsx b/app/essays/[slug]/page.tsx
index 8025bf48..167662e4 100644
--- a/app/essays/[slug]/page.tsx
+++ b/app/essays/[slug]/page.tsx
@@ -10,8 +10,7 @@ import { buttonVariants } from "@/components/ui/button";
 import { ChevronLeft, ChevronRight } from "lucide-react";
 import { cn } from "@/lib/utils";
 import { MobileNav, type MobileNavGroup } from "@/components/mobile-nav";
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import { bff, bffList } from "@/lib/bff";
 
 // ---------------------------------------------------------------------------
 // HTML sanitisation (same pattern used across all readers)
@@ -31,25 +30,6 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
 // ---------------------------------------------------------------------------
 // Data fetching
 // ---------------------------------------------------------------------------
@@ -69,7 +49,14 @@ type SidebarItem = {
 };
 
 async function getEssay(slug: string): Promise<EssayData | null> {
-  const doc = await prisma.essay.findUnique({ where: { slug } });
+  const doc = await bff<{
+    slug: string;
+    title: string;
+    author: string;
+    year: number | null;
+    group: string | null;
+    paragraphs: string[];
+  }>(`/essays/${slug}`);
   if (!doc) return null;
   return {
     slug: doc.slug,
@@ -77,15 +64,12 @@ async function getEssay(slug: string): Promise<EssayData | null> {
     author: doc.author,
     year: doc.year,
     group: doc.group,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
+    paragraphs: (doc.paragraphs ?? []).map(sanitizeHtml),
   };
 }
 
 async function getEssaySidebar(): Promise<SidebarItem[]> {
-  return prisma.essay.findMany({
-    orderBy: [{ group: "asc" }, { order: "asc" }],
-    select: { slug: true, title: true },
-  });
+  return bffList<SidebarItem>("/essays");
 }
 
 // ---------------------------------------------------------------------------
diff --git a/app/essays/page.tsx b/app/essays/page.tsx
index 68cbd03a..18e155ce 100644
--- a/app/essays/page.tsx
+++ b/app/essays/page.tsx
@@ -4,7 +4,7 @@ import type { Metadata } from "next";
 import Link from "next/link";
 import { PageHeader } from "@/components/page-header";
 import { buildOgMeta } from "@/lib/og";
-import { prisma } from "@/lib/db";
+import { bffList } from "@/lib/bff";
 import { EssaysGrid } from "./essays-grid";
 
 export function generateMetadata(): Metadata {
@@ -17,10 +17,12 @@ export function generateMetadata(): Metadata {
 }
 
 async function getAllEssays() {
-  return prisma.essay.findMany({
-    orderBy: [{ group: "asc" }, { order: "asc" }],
-    select: { slug: true, title: true, year: true, group: true },
-  });
+  return bffList<{
+    slug: string;
+    title: string;
+    year: number | null;
+    group: string | null;
+  }>("/essays");
 }
 
 export default async function EssaysPage() {
diff --git a/app/transcriptions/[slug]/play-audio-button.tsx b/app/transcriptions/[slug]/play-audio-button.tsx
index bde1b4b2..73662407 100644
--- a/app/transcriptions/[slug]/play-audio-button.tsx
+++ b/app/transcriptions/[slug]/play-audio-button.tsx
@@ -67,7 +67,11 @@ export function PlayAudioButton({
         aria-label={isThisPlaying ? "Pause" : "Play audio"}
       >
         {isThisPlaying ? (
-          <Pause className="size-3.5" />
+          <AudioWaveAnimation
+            paused={false}
+            colorClassName="bg-primary-foreground"
+            size="sm"
+          />
         ) : (
           <Play className="size-3.5 ml-0.5" />
         )}
diff --git a/app/transcriptions/place/[place]/page.tsx b/app/transcriptions/place/[place]/page.tsx
index 3e628be7..24b37ca4 100644
--- a/app/transcriptions/place/[place]/page.tsx
+++ b/app/transcriptions/place/[place]/page.tsx
@@ -8,7 +8,8 @@ import { buildOgMeta } from "@/lib/og";
 import { PageHeader } from "@/components/page-header";
 import { Card, CardContent } from "@/components/ui/card";
 import { Badge } from "@/components/ui/badge";
-import { Clock } from "lucide-react";
+import { Clock, MapPin } from "lucide-react";
+import { PlayAudioButton } from "@/app/transcriptions/[slug]/play-audio-button";
 
 export async function generateMetadata({
   params,
@@ -60,7 +61,7 @@ export default async function TranscriptionsByPlacePage({
               <Link
                 key={t.slug}
                 href={`/transcriptions/${t.slug}`}
-                className="flex flex-col sm:flex-row sm:items-center sm:justify-between px-5 py-3.5 gap-1 sm:gap-4 hover:bg-muted transition-colors"
+                className="flex items-center px-5 py-3.5 gap-3 hover:bg-muted transition-colors"
               >
                 <div className="min-w-0 flex-1">
                   <div className="flex items-center gap-2 flex-wrap">
@@ -87,6 +88,16 @@ export default async function TranscriptionsByPlacePage({
                     )}
                   </div>
                 </div>
+                {t.audioUrl && (
+                  <PlayAudioButton
+                    audioUrl={t.audioUrl}
+                    title={t.name}
+                    subtitle={[t.date, t.place].filter(Boolean).join(" · ")}
+                    sourceUrl={`/transcriptions/${t.slug}`}
+                    type={t.type}
+                    variant="compact"
+                  />
+                )}
               </Link>
             ))}
           </CardContent>
diff --git a/app/transcriptions/type/[type]/type-browser.tsx b/app/transcriptions/type/[type]/type-browser.tsx
index 6b9e0ac7..af3737e3 100644
--- a/app/transcriptions/type/[type]/type-browser.tsx
+++ b/app/transcriptions/type/[type]/type-browser.tsx
@@ -8,6 +8,7 @@ import { buttonVariants } from "@/components/ui/button";
 import { ReadingSettings } from "@/components/reading-settings";
 import { cn } from "@/lib/utils";
 import { ChevronLeft, ChevronRight, Menu, Clock, MapPin } from "lucide-react";
+import { PlayAudioButton } from "@/app/transcriptions/[slug]/play-audio-button";
 import {
   Drawer,
   DrawerClose,
@@ -34,6 +35,7 @@ export type TranscriptionItem = {
   reference: string | null;
   durationMinutes: number | null;
   participants: string[];
+  audioUrl: string | null;
 };
 
 type YearGroup = {
@@ -364,7 +366,7 @@ function MonthSection({
             <li key={t.slug}>
               <Link
                 href={`/transcriptions/${t.slug}`}
-                className="flex flex-col sm:flex-row sm:items-center sm:justify-between px-5 pl-12 py-3.5 gap-1 sm:gap-4 hover:bg-muted transition-colors"
+                className="flex items-center px-5 pl-12 py-3.5 gap-3 hover:bg-muted transition-colors"
               >
                 <div className="min-w-0 flex-1">
                   <div className="flex items-center gap-2 flex-wrap">
@@ -396,6 +398,16 @@ function MonthSection({
                     )}
                   </div>
                 </div>
+                {t.audioUrl && (
+                  <PlayAudioButton
+                    audioUrl={t.audioUrl}
+                    title={t.name}
+                    subtitle={[t.date, t.place].filter(Boolean).join(" · ")}
+                    sourceUrl={`/transcriptions/${t.slug}`}
+                    type={t.type}
+                    variant="compact"
+                  />
+                )}
               </Link>
             </li>
           ))}
diff --git a/components/site-footer.tsx b/components/site-footer.tsx
index 9564a99e..1a4fa103 100644
--- a/components/site-footer.tsx
+++ b/components/site-footer.tsx
@@ -5,7 +5,7 @@ export function SiteFooter() {
     <footer className="border-t border-border bg-card mt-auto">
       <div className="max-w-5xl mx-auto px-6 py-6 flex flex-col sm:flex-row items-center justify-between gap-4 text-sm text-muted-foreground">
         <p>
-          &copy; {new Date().getFullYear()}{" "}
+          Team {" "}
           <span className="font-medium text-foreground">Prabhupāda Says</span>
         </p>
 
diff --git a/lib/api.ts b/lib/api.ts
index e97d2a6f..b0658ef2 100644
--- a/lib/api.ts
+++ b/lib/api.ts
@@ -1,13 +1,11 @@
 /**
  * Data access layer for server components.
  *
- * These functions query MongoDB via Prisma and are called directly by
- * Next.js server components. The /api/* routes exist for external consumers
- * and for client-side verse-navigation fetching.
+ * These functions call the Go BFF API server instead of querying the DB
+ * directly. The BFF handles sanitization, pagination, and caching.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import { bff, bffList, bffOrThrow } from "@/lib/bff";
 
 // ---------------------------------------------------------------------------
 // Types
@@ -33,6 +31,12 @@ export type VerseRecord = {
   synonyms: { word: string; meanings: string[] }[];
   translation: string;
   purport: string[];
+  /** Alias for bookTitle — used by ISO/BS/NOI pages */
+  title?: string;
+  /** Alias for verse number — used by NOI pages as "text number" */
+  text?: number;
+  /** Alias for verse/chapter number — used by ISO pages as "mantra number" */
+  mantra?: number;
 };
 
 export type VerseIndexEntry = {
@@ -73,28 +77,133 @@ export type ProseChapterRecord = {
   paragraphs: string[];
 };
 
+// ---------------------------------------------------------------------------
+// HTML sanitisation
+// ---------------------------------------------------------------------------
+
+function sanitizeHtml(html: string): string {
+  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
+  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
+  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
+  clean = clean.replace(
+    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
+    "",
+  );
+  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
+  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
+  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
+  return clean;
+}
+
+function sanitizeParagraphs(paragraphs: string[] | undefined): string[] {
+  if (!paragraphs || !Array.isArray(paragraphs)) return [];
+  return paragraphs.map(sanitizeHtml);
+}
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+/**
+ * Build a BFF path for verse-related endpoints.
+ * Books like BG and SB1962 have no division (null), so we skip it.
+ * Books like SB and CC have a division (canto / līlā).
+ */
+function versePath(
+  book: string,
+  division: string | null,
+  chapter: number,
+): string {
+  if (division) return `/books/${book}/${division}/${chapter}`;
+  return `/books/${book}/${chapter}`;
+}
+
+/**
+ * Map a BFF verse response (snake_case) to the frontend VerseRecord (camelCase).
+ */
+function mapVerse(v: Record<string, unknown>): VerseRecord {
+  const bookTitle = String(v.book_title ?? v.bookTitle ?? "");
+  const chapter = Number(v.chapter ?? 0);
+  const verse = Number(v.verse ?? 0);
+  return {
+    id: String(v.id ?? ""),
+    book: String(v.book ?? ""),
+    division: v.division ? String(v.division) : null,
+    chapter,
+    verse,
+    verseEnd:
+      v.verse_end != null
+        ? Number(v.verse_end)
+        : v.verseEnd != null
+          ? Number(v.verseEnd)
+          : null,
+    reference: String(v.reference ?? ""),
+    bookTitle,
+    devanagari: String(v.devanagari ?? ""),
+    bengali: v.bengali ? String(v.bengali) : null,
+    transliteration: String(v.transliteration ?? ""),
+    synonyms: (v.synonyms as { word: string; meanings: string[] }[]) ?? [],
+    translation: String(v.translation ?? ""),
+    purport: (v.purport as string[]) ?? [],
+    // Aliases for page backwards compatibility
+    title: bookTitle,
+    text: verse,
+    mantra: chapter,
+  };
+}
+
+/**
+ * Map a BFF verse-index entry (snake_case) to VerseIndexEntry (camelCase).
+ */
+function mapVerseIndex(v: Record<string, unknown>): VerseIndexEntry {
+  return {
+    verse: Number(v.verse ?? 0),
+    verseEnd: v.verse_end ? Number(v.verse_end) : null,
+    reference: String(v.reference ?? ""),
+  };
+}
+
 // ---------------------------------------------------------------------------
 // Book meta
 // ---------------------------------------------------------------------------
 
 /**
  * Get all book metas — each has { book, ...data } where data is the intro.json blob.
+ *
+ * The BFF returns { id, book, data: { title, author, chapters, ... } }.
+ * We flatten it to { book, title, author, chapters, ... } for the frontend.
  */
 export async function getAllBooks(): Promise<BookMeta[]> {
-  const metas = await prisma.bookMeta.findMany();
-  return metas.map((m) => ({
-    book: m.book,
-    ...(m.data as Record<string, unknown>),
-  }));
+  const raw = await bffList<{ book: string; data: Record<string, unknown> }>(
+    "/books",
+    { tags: ["books"] },
+  );
+  return raw.map(flattenBookMeta);
 }
 
 /**
  * Get a single book's meta by slug ("bg", "sb", "cc").
  */
 export async function getBookMeta(book: string): Promise<BookMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book } });
-  if (!meta) return null;
-  return { book: meta.book, ...(meta.data as Record<string, unknown>) };
+  const raw = await bff<{ book: string; data: Record<string, unknown> }>(
+    `/books/${book}`,
+    { tags: [`book-${book}`] },
+  );
+  if (!raw) return null;
+  return flattenBookMeta(raw);
+}
+
+/**
+ * Flatten a BFF book meta response.
+ * BFF returns: { id, book, data: { title, author, chapters, ... } }
+ * Frontend expects: { book, title, author, chapters, ... }
+ */
+function flattenBookMeta(raw: {
+  book: string;
+  data: Record<string, unknown>;
+}): BookMeta {
+  const data = raw.data && typeof raw.data === "object" ? raw.data : {};
+  return { book: raw.book, ...data } as BookMeta;
 }
 
 // ---------------------------------------------------------------------------
@@ -115,17 +224,14 @@ export async function getChapterVerseIndex(
   division: string | null,
   chapter: number,
 ): Promise<VerseIndexEntry[]> {
-  const entries = await prisma.verse.findMany({
-    where: { book, division, chapter },
-    orderBy: { verse: "asc" },
-    select: {
-      verse: true,
-      verseEnd: true,
-      reference: true,
-    },
+  const path = versePath(book, division, chapter);
+  const res = await bff<{
+    verses?: Record<string, unknown>[];
+  }>(path, {
+    tags: [`verses-${book}`],
   });
-
-  return entries;
+  if (!res || !res.verses) return [];
+  return res.verses.map(mapVerseIndex);
 }
 
 // ---------------------------------------------------------------------------
@@ -147,27 +253,41 @@ export async function getChapterVerses(
   page: number = 1,
   limit: number = DEFAULT_PAGE_SIZE,
 ): Promise<PaginatedVerses> {
-  const skip = (page - 1) * limit;
+  const path = versePath(book, division, chapter);
 
-  const where = { book, division, chapter };
+  const raw = await bff<{
+    verses: Record<string, unknown>[];
+    total: number;
+    page: number;
+    limit: number;
+    totalPages: number;
+    hasMore: boolean;
+  }>(`${path}/verses`, {
+    params: {
+      page: String(page),
+      limit: String(limit),
+    },
+    tags: [`verses-${book}`],
+  });
 
-  const [verses, total] = await Promise.all([
-    prisma.verse.findMany({
-      where,
-      orderBy: { verse: "asc" },
-      skip,
-      take: limit,
-    }),
-    prisma.verse.count({ where }),
-  ]);
+  if (!raw) {
+    return {
+      verses: [],
+      total: 0,
+      page,
+      limit,
+      totalPages: 0,
+      hasMore: false,
+    };
+  }
 
   return {
-    verses: verses as unknown as VerseRecord[],
-    total,
-    page,
-    limit,
-    totalPages: Math.ceil(total / limit),
-    hasMore: skip + verses.length < total,
+    verses: (raw.verses ?? []).map(mapVerse),
+    total: raw.total,
+    page: raw.page,
+    limit: raw.limit,
+    totalPages: raw.totalPages,
+    hasMore: raw.hasMore,
   };
 }
 
@@ -184,11 +304,11 @@ export async function getSingleVerse(
   chapter: number,
   verse: number,
 ): Promise<VerseRecord | null> {
-  const result = await prisma.verse.findFirst({
-    where: { book, division, chapter, verse },
+  const path = versePath(book, division, chapter);
+  const raw = await bff<Record<string, unknown>>(`${path}/${verse}`, {
+    tags: [`verses-${book}`],
   });
-
-  return result as unknown as VerseRecord | null;
+  return raw ? mapVerse(raw) : null;
 }
 
 // ---------------------------------------------------------------------------
@@ -199,109 +319,76 @@ export async function getSingleVerse(
  * Get all prose chapters/segments for a given book and volume,
  * optionally filtered by type ("chapter" | "intro-segment").
  * Ordered by the `order` field.
+ *
+ * For KB (which has real volumes), uses /api/v1/books/kb/{volume}.
+ * For other books (volume=0 sentinel), uses /api/v1/books/{code}/chapters.
  */
 export async function getProseChapters(
   book: string,
   volume: number,
   type?: string,
 ): Promise<ProseChapterRecord[]> {
-  const where: Record<string, unknown> = { book, volume };
-  if (type) where.type = type;
+  // KB has real volumes (1, 2, 3, …); other prose books use volume=0 as sentinel
+  const path =
+    book === "kb" && volume > 0
+      ? `/books/kb/${volume}`
+      : `/books/${book}/chapters`;
 
-  const results = await prisma.proseChapter.findMany({
-    where,
-    orderBy: { order: "asc" },
+  const params: Record<string, string> = {};
+  if (type) params.type = type;
+
+  const chapters = await bffList<ProseChapterRecord>(path, {
+    params: Object.keys(params).length > 0 ? params : undefined,
+    tags: [`book-${book}`],
   });
-
-  return results.map(normalizeProse);
+  return chapters.map((ch) => ({
+    ...ch,
+    paragraphs: sanitizeParagraphs(ch.paragraphs),
+    id: ch.id ?? "",
+    book: ch.book ?? book,
+    volume: ch.volume ?? volume,
+    chapter: ch.chapter ?? null,
+    title: ch.title ?? "",
+    type: ch.type ?? "chapter",
+    slug: ch.slug ?? "",
+    order: ch.order ?? 0,
+  }));
 }
 
 /**
  * Get a single prose chapter by book + volume + slug.
+ *
+ * For KB, uses /api/v1/books/kb/{volume}/{slug}.
+ * For other books, uses /api/v1/books/{code}/chapters/{slug}.
  */
 export async function getProseChapter(
   book: string,
   volume: number,
   slug: string,
 ): Promise<ProseChapterRecord | null> {
-  const result = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book, volume, slug },
-    },
+  const path =
+    book === "kb" && volume > 0
+      ? `/books/kb/${volume}/${slug}`
+      : `/books/${book}/chapters/${slug}`;
+
+  const chapter = await bff<ProseChapterRecord>(path, {
+    tags: [`book-${book}`],
   });
-
-  return result ? normalizeProse(result) : null;
-}
-
-/**
- * Normalize a prose chapter from the DB.
- * Some chapters were stored with paragraphs as a JSON string (fallback
- * for BSON wire-protocol corruption). This normalizes them back to arrays.
- */
-function normalizeProse(doc: {
-  id: string;
-  book: string;
-  volume: number;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug: string;
-  order: number;
-  paragraphs: string[] | JsonValue;
-}): ProseChapterRecord {
-  let paragraphs: string[];
-
-  if (typeof doc.paragraphs === "string") {
-    // Was stored as stringified JSON — parse it back
-    try {
-      paragraphs = JSON.parse(doc.paragraphs);
-    } catch {
-      paragraphs = [doc.paragraphs];
-    }
-  } else if (Array.isArray(doc.paragraphs)) {
-    paragraphs = doc.paragraphs as string[];
-  } else {
-    paragraphs = [];
-  }
-
-  // Sanitize HTML — strip dangerous tags and event handlers
-  paragraphs = paragraphs.map(sanitizeHtml);
-
+  if (!chapter) return null;
   return {
-    id: doc.id,
-    book: doc.book,
-    volume: doc.volume,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    order: doc.order,
-    paragraphs,
+    ...chapter,
+    paragraphs: sanitizeParagraphs(chapter.paragraphs),
+    id: chapter.id ?? "",
+    book: chapter.book ?? book,
+    volume: chapter.volume ?? volume,
+    chapter: chapter.chapter ?? null,
+    title: chapter.title ?? "",
+    type: chapter.type ?? "chapter",
+    slug: chapter.slug ?? slug,
+    order: chapter.order ?? 0,
   };
 }
 
-/**
- * Sanitize an HTML string by stripping dangerous tags and attributes.
- * Keeps safe formatting tags: <i>, <b>, <em>, <strong>, <br>, <div>, <span>.
- */
-function sanitizeHtml(html: string): string {
-  // Remove <script>...</script>, <style>...</style>, <iframe>...</iframe>
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  // Remove lone <script>, <style>, <iframe> opening/closing tags
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  // Remove event handler attributes (onclick, onload, onerror, etc.)
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  // Remove javascript: URLs
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
 // ---------------------------------------------------------------------------
 // Glossary
 // ---------------------------------------------------------------------------
@@ -310,9 +397,5 @@ function sanitizeHtml(html: string): string {
  * Get all glossary entries, ordered alphabetically by term.
  */
 export async function getAllGlossaryEntries(): Promise<GlossaryRecord[]> {
-  const entries = await prisma.glossaryEntry.findMany({
-    orderBy: { term: "asc" },
-  });
-
-  return entries as unknown as GlossaryRecord[];
+  return bffList<GlossaryRecord>("/glossary", { tags: ["glossary"] });
 }
diff --git a/lib/bbd.ts b/lib/bbd.ts
index 08d6ce75..dce72426 100644
--- a/lib/bbd.ts
+++ b/lib/bbd.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for Beyond Birth and Death (BBD).
  *
- * Reads from MongoDB via Prisma.
- * BBD is a simple prose book with 1 intro segment (front-pages) and 5 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "bbd";
 
-const BOOK = "bbd";
+// Re-export types with book-specific names for backwards compatibility
+export type BbdMeta = BookMeta;
+export type BbdChapterEntry = { number: number; title: string };
+export type BbdIntroSegment = IntroSegment;
+export type BbdChapter = Chapter;
+export type BbdSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type BbdMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: BbdChapterEntry[];
-};
-
-export type BbdChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type BbdIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type BbdChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type BbdSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "5" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getBbdMeta(): Promise<BbdMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as BbdMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getBbdIntroSegments(): Promise<BbdIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getBbdIntroSegment(
   slug: string,
 ): Promise<BbdIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–5).
- */
 export async function getBbdChapter(
   chapterNum: number,
 ): Promise<BbdChapter | null> {
-  if (chapterNum < 1 || chapterNum > 5 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "5"            → chapter
- */
 export async function getBbdContent(
   slug: string,
 ): Promise<BbdChapter | BbdIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getBbdIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 5) {
-    return getBbdChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–5
- */
 export async function getBbdSidebarItems(): Promise<BbdSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getBbdMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: BbdSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–5 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/bff.ts b/lib/bff.ts
new file mode 100644
index 00000000..71cd5b59
--- /dev/null
+++ b/lib/bff.ts
@@ -0,0 +1,123 @@
+/**
+ * BFF API client for server components.
+ *
+ * Provides typed fetch helpers that call the Go BFF API server.
+ * Used by all data layer files (lib/*.ts) instead of direct Prisma queries.
+ *
+ * The BFF URL is configured via the BFF_URL environment variable.
+ */
+
+const BFF_BASE = process.env.BFF_URL || "http://localhost:8080";
+
+/** Build a full BFF API URL. */
+function apiUrl(path: string, params?: Record<string, string>): string {
+  const url = new URL(`/api/v1${path}`, BFF_BASE);
+  if (params) {
+    for (const [key, value] of Object.entries(params)) {
+      url.searchParams.set(key, value);
+    }
+  }
+  return url.toString();
+}
+
+/** Custom error for BFF API failures. */
+export class BffError extends Error {
+  constructor(
+    public status: number,
+    message: string,
+  ) {
+    super(message);
+    this.name = "BffError";
+  }
+}
+
+/**
+ * Fetch JSON from the BFF API.
+ *
+ * - Throws BffError on non-2xx responses
+ * - Returns null for 404 responses (instead of throwing)
+ * - Uses Next.js fetch with revalidation options
+ *
+ * @param path - API path (e.g., "/books/bg")
+ * @param options - Optional fetch options
+ * @param params - Optional query parameters
+ */
+export async function bff<T>(
+  path: string,
+  options?: {
+    params?: Record<string, string>;
+    /** Next.js revalidation in seconds. Default: 60. Set to 0 for no cache. */
+    revalidate?: number;
+    /** Next.js cache tags for on-demand revalidation */
+    tags?: string[];
+  },
+): Promise<T | null> {
+  const url = apiUrl(path, options?.params);
+
+  const res = await fetch(url, {
+    next: {
+      revalidate: options?.revalidate ?? 60,
+      tags: options?.tags,
+    },
+    headers: {
+      Accept: "application/json",
+    },
+  });
+
+  if (res.status === 404) {
+    return null;
+  }
+
+  if (!res.ok) {
+    const body = await res.text().catch(() => "");
+    throw new BffError(
+      res.status,
+      `BFF ${res.status} ${path}: ${body.slice(0, 200)}`,
+    );
+  }
+
+  const json = await res.json();
+
+  // Unwrap BFF envelope: { success: true, data: T }
+  if (json && typeof json === "object" && "data" in json) {
+    return json.data as T;
+  }
+
+  // Fallback: return raw response if no envelope
+  return json as T;
+}
+
+/**
+ * Fetch JSON from the BFF API, throwing on 404.
+ * Use this when a missing resource should be an error, not null.
+ */
+export async function bffOrThrow<T>(
+  path: string,
+  options?: {
+    params?: Record<string, string>;
+    revalidate?: number;
+    tags?: string[];
+  },
+): Promise<T> {
+  const result = await bff<T>(path, options);
+  if (result === null) {
+    throw new BffError(404, `Not found: ${path}`);
+  }
+  return result;
+}
+
+/**
+ * Fetch a list from the BFF API.
+ * Returns empty array on 404 (instead of null).
+ */
+export async function bffList<T>(
+  path: string,
+  options?: {
+    params?: Record<string, string>;
+    revalidate?: number;
+    tags?: string[];
+  },
+): Promise<T[]> {
+  const result = await bff<T[]>(path, options);
+  return result ?? [];
+}
diff --git a/lib/bk.ts b/lib/bk.ts
index 953ec95e..7541d642 100644
--- a/lib/bk.ts
+++ b/lib/bk.ts
@@ -1,299 +1,29 @@
-/**
- * Data access layer for Bhagavāner Kathā (BK).
- *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * BK is a simple prose book with no volume structure and no intro segments —
- * just 2 chapters directly. We use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/bk/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
- */
+import {
+  getBookMeta,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+const CODE = "bk";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type BkMeta = BookMeta;
+export type BkChapterEntry = { number: number; title: string };
+export type BkChapter = Chapter;
+export type BkSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-const BOOK = "bk";
-
-const BK_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "bk");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type BkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number | null;
-  description: string;
-  totalChapters: number;
-  chapters: BkChapterEntry[];
-};
-
-export type BkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type BkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type BkSidebarItem = {
-  /** URL-safe slug: "1", "2" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "chapter" */
-  type: string;
-  /** Chapter number */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getBkMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getBkChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getBkContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): BkChapter | null {
-  const filePath = path.join(
-    BK_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<BkChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getBkMeta(): Promise<BkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as BkMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(BK_JSON_DIR, "intro.json");
-  return readLocalJson<BkMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–2).
- */
-export async function getBkChapter(
-  chapterNum: number,
-): Promise<BkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 2 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "1" … "2"  → chapter
- */
-export async function getBkContent(
-  slug: string,
-): Promise<BkChapter | null> {
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 2) {
-    return getBkChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: chapters 1–2 (no intro segments)
- */
-export async function getBkSidebarItems(): Promise<BkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getBkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(meta: BkMeta): BkSidebarItem[] {
-  const items: BkSidebarItem[] = [];
-
-  // Chapters 1–2 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: BkMeta | null): BkSidebarItem[] {
-  const items: BkSidebarItem[] = [];
-
-  // Chapters from meta or scan local chapter JSONs
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(BK_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<BkChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  return items;
+export async function getBkSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/books.ts b/lib/books.ts
new file mode 100644
index 00000000..f14f2293
--- /dev/null
+++ b/lib/books.ts
@@ -0,0 +1,368 @@
+/**
+ * Generic book data layer — replaces individual book files (bbd.ts, ej.ts, etc.)
+ *
+ * Calls the BFF API for book metadata, chapters, and intro segments.
+ * All prose books share the same BFF endpoints:
+ *   GET /api/v1/books/{code}                → book meta
+ *   GET /api/v1/books/{code}/chapters       → all chapters (with optional ?type= filter)
+ *   GET /api/v1/books/{code}/chapters/{slug} → single chapter
+ */
+
+import { bff, bffList } from "@/lib/bff";
+
+// ---------------------------------------------------------------------------
+// Types — generic, work for any prose book
+// ---------------------------------------------------------------------------
+
+export type BookMeta = {
+  book: string;
+  title: string;
+  author: string;
+  year?: number;
+  subtitle?: string;
+  description?: string;
+  totalChapters?: number;
+  chapters: ChapterEntry[];
+  /** Volume info for multi-volume books like KB */
+  volumes?: { number: number; title: string; chapters: ChapterEntry[] }[];
+  /** Parent chapters for hierarchical books (SSR, DS, SVA, NOD) — always [] for non-hierarchical books */
+  parts: {
+    number: number;
+    title: string;
+    subChapters: { slug: string; title: string }[];
+    /** NOD-style: array of chapter numbers belonging to this part */
+    chapters: number[];
+  }[];
+  /** For ISO — mantra entries (always [] for non-ISO books) */
+  mantras: { number: number; slug: string; title: string }[];
+  /** For BS/NOI — text entries (always [] for non-BS/NOI books) */
+  texts: { number: number; slug: string; title: string }[];
+  /** Total mantras (ISO) */
+  totalMantras?: number;
+  /** Total texts (BS, NOI) */
+  totalTexts?: number;
+};
+
+export type ChapterEntry = {
+  number: number;
+  title: string;
+  slug?: string;
+  subChapters: { slug: string; title: string }[];
+};
+
+export type IntroSegment = {
+  slug: string;
+  title: string;
+  type: string;
+  book: string;
+  order: number;
+  paragraphs: string[];
+};
+
+export type Chapter = {
+  book: string;
+  chapter: number | null;
+  title: string;
+  type: string;
+  slug: string;
+  order: number;
+  paragraphs: string[];
+  /** For hierarchical books (SSR, DS, SVA) — the parent chapter number */
+  parentChapter?: number;
+  /** For hierarchical sub-chapters — the sub-chapter number */
+  subChapter?: number;
+};
+
+export type SidebarItem = {
+  slug: string;
+  label: string;
+  type: string;
+  chapter: number | null;
+  /** For hierarchical books (SSR, DS, SVA) — the parent chapter number */
+  parentChapter?: number;
+  /** Sub-chapters within a parent chapter */
+  subChapters?: { slug: string; title: string }[];
+  /** For verse books (ISO) — mantra number */
+  mantra?: number;
+  /** For verse books (BS, NOI) — text number */
+  text?: number;
+  /** Part number this item belongs to (for books with parts like TLC, NOD) */
+  partNumber?: number;
+  /** Part title (e.g., "Part I", "Part One") */
+  partTitle?: string;
+};
+
+// ---------------------------------------------------------------------------
+// HTML sanitisation
+// ---------------------------------------------------------------------------
+
+function sanitizeHtml(html: string): string {
+  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
+  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
+  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
+  clean = clean.replace(
+    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
+    "",
+  );
+  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
+  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
+  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
+  return clean;
+}
+
+// ---------------------------------------------------------------------------
+// BFF response types (snake_case from Go)
+// ---------------------------------------------------------------------------
+
+type BffChapter = {
+  id: string;
+  book: string;
+  volume: number;
+  chapter: number | null;
+  title: string;
+  type: string;
+  slug: string;
+  order: number;
+  paragraphs: string[];
+  mantra?: number;
+  text?: number;
+};
+
+// ---------------------------------------------------------------------------
+// Mappers
+// ---------------------------------------------------------------------------
+
+function mapChapter(c: BffChapter): Chapter {
+  return {
+    book: c.book,
+    chapter: c.chapter,
+    title: c.title,
+    type: c.type,
+    slug: c.slug,
+    order: c.order,
+    paragraphs: (c.paragraphs ?? []).map(sanitizeHtml),
+  };
+}
+
+function mapIntro(c: BffChapter): IntroSegment {
+  return {
+    slug: c.slug,
+    title: c.title,
+    type: c.type,
+    book: c.book,
+    order: c.order,
+    paragraphs: (c.paragraphs ?? []).map(sanitizeHtml),
+  };
+}
+
+// ---------------------------------------------------------------------------
+// Generic book functions
+// ---------------------------------------------------------------------------
+
+/**
+ * Get book metadata.
+ */
+export async function getBookMeta(code: string): Promise<BookMeta | null> {
+  const raw = await bff<{ book: string; data: Record<string, unknown> }>(
+    `/books/${code}`,
+    { tags: [`book-${code}`] },
+  );
+  if (!raw) return null;
+
+  // Flatten: BFF returns { id, book, data: { title, chapters, parts, ... } }
+  const data = raw.data && typeof raw.data === "object" ? raw.data : {};
+  const meta = { book: raw.book, ...data } as BookMeta;
+  // Ensure arrays are always present
+  if (!meta.chapters) meta.chapters = [];
+  for (const ch of meta.chapters) {
+    if (!ch.subChapters) ch.subChapters = [];
+  }
+  if (!meta.mantras) meta.mantras = [];
+  if (!meta.texts) meta.texts = [];
+  if (!meta.parts) meta.parts = [];
+  for (const part of meta.parts) {
+    if (!part.subChapters) part.subChapters = [];
+    if (!part.chapters) part.chapters = [];
+  }
+  return meta;
+}
+
+/**
+ * Get all intro segments for a book.
+ */
+export async function getIntroSegments(code: string): Promise<IntroSegment[]> {
+  const chapters = await bffList<BffChapter>(`/books/${code}/chapters`, {
+    tags: [`book-${code}`],
+  });
+  return chapters.filter((c) => c.type === "intro-segment").map(mapIntro);
+}
+
+/**
+ * Get a single intro segment by slug.
+ */
+export async function getIntroSegment(
+  code: string,
+  slug: string,
+): Promise<IntroSegment | null> {
+  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
+  const chapter = await bff<BffChapter>(`/books/${code}/chapters/${dbSlug}`, {
+    tags: [`book-${code}`],
+  });
+  return chapter ? mapIntro(chapter) : null;
+}
+
+/**
+ * Get a single chapter by slug (numeric or named).
+ */
+export async function getChapter(
+  code: string,
+  slug: string,
+): Promise<Chapter | null> {
+  const chapter = await bff<BffChapter>(`/books/${code}/chapters/${slug}`, {
+    tags: [`book-${code}`],
+  });
+  return chapter ? mapChapter(chapter) : null;
+}
+
+/**
+ * Get content by URL slug — routes to intro segment or chapter.
+ */
+export async function getContent(
+  code: string,
+  slug: string,
+): Promise<Chapter | IntroSegment | null> {
+  if (slug.startsWith("intro-")) {
+    return getIntroSegment(code, slug);
+  }
+  // Try as chapter
+  return getChapter(code, slug);
+}
+
+/**
+ * Build sidebar navigation items for a book.
+ * Returns intro segments first, then chapters.
+ */
+export async function getSidebarItems(code: string): Promise<SidebarItem[]> {
+  const [meta, allChapters] = await Promise.all([
+    getBookMeta(code),
+    bffList<BffChapter>(`/books/${code}/chapters`, { tags: [`book-${code}`] }),
+  ]);
+
+  if (!meta) return [];
+
+  const items: SidebarItem[] = [];
+
+  // Intro segments
+  for (const ch of allChapters) {
+    if (ch.type === "intro-segment") {
+      items.push({
+        slug: ch.slug,
+        label: ch.title,
+        type: "intro-segment",
+        chapter: null,
+      });
+    }
+  }
+
+  // Verse entries (mantras for ISO, texts for BS/NOI)
+  for (const ch of allChapters) {
+    if (ch.type === "verse") {
+      if (ch.mantra != null) {
+        items.push({
+          slug: ch.slug,
+          label: ch.mantra === 0 ? "Invocation" : `Mantra ${ch.mantra}`,
+          type: "verse",
+          chapter: null,
+          mantra: ch.mantra,
+        });
+      } else if (ch.text != null) {
+        items.push({
+          slug: ch.slug,
+          label: `Text ${ch.text}`,
+          type: "verse",
+          chapter: null,
+          text: ch.text,
+        });
+      }
+    }
+  }
+
+  // Chapters — if parts exist, group chapters under part headers
+  if (
+    meta.parts &&
+    meta.parts.length > 0 &&
+    meta.chapters &&
+    meta.chapters.length > 0
+  ) {
+    // Build a lookup: chapter number → which part it belongs to
+    const chapterToPart = new Map<
+      number,
+      { partNumber: number; partTitle: string }
+    >();
+    for (const part of meta.parts) {
+      for (const chNum of part.chapters) {
+        chapterToPart.set(chNum, {
+          partNumber: part.number,
+          partTitle: part.title,
+        });
+      }
+    }
+
+    for (const ch of meta.chapters) {
+      const partInfo = chapterToPart.get(ch.number);
+      items.push({
+        slug: ch.slug ?? String(ch.number),
+        label: `${ch.number}. ${ch.title}`,
+        type: "chapter",
+        chapter: ch.number,
+        partNumber: partInfo?.partNumber,
+        partTitle: partInfo?.partTitle,
+      });
+    }
+  } else if (meta.chapters && meta.chapters.length > 0) {
+    // No parts — flat chapter list
+    for (const ch of meta.chapters) {
+      items.push({
+        slug: ch.slug ?? String(ch.number),
+        label: `${ch.number}. ${ch.title}`,
+        type: "chapter",
+        chapter: ch.number,
+      });
+    }
+  } else {
+    // Fallback: use chapters from the DB ordered by order field
+    for (const ch of allChapters) {
+      if (ch.type === "chapter") {
+        items.push({
+          slug: ch.slug,
+          label: ch.title,
+          type: "chapter",
+          chapter: ch.chapter,
+        });
+      }
+    }
+  }
+
+  // Conclusion segments (if any)
+  for (const ch of allChapters) {
+    if (ch.type === "conclusion") {
+      items.push({
+        slug: ch.slug,
+        label: ch.title,
+        type: "conclusion",
+        chapter: null,
+      });
+    }
+  }
+
+  return items;
+}
+
+/**
+ * For hierarchical books (SSR, DS) — get the navigable items
+ * (intro segments + parent chapters that have subChapters).
+ * This matches the getNavigableItems() functions in ssr.ts and ds.ts.
+ */
+export function getNavigableItems(items: SidebarItem[]): SidebarItem[] {
+  return items;
+}
diff --git a/lib/bs.ts b/lib/bs.ts
index e2563ecb..36c2ee94 100644
--- a/lib/bs.ts
+++ b/lib/bs.ts
@@ -1,357 +1,70 @@
 /**
  * Data access layer for Śrī Brahma-saṁhitā (BS).
  *
- * Reads from MongoDB via Prisma.
- * BS has BOTH verses (in the `verses` collection)
- * AND prose intro segments (in the `prose_chapters` collection).
+ * Delegates to the generic book data layer (BFF API) for prose content,
+ * and to lib/api.ts for verse lookups.
  *
- * Verses were seeded with:
- *   - book: "bs", division: null
- *   - chapter = text number (1-62)
- *   - verse = always 1
- *
- * Intro segments were seeded with:
- *   - book: "bs", volume: 0, type: "intro-segment"
- *   - slugs like "intro-introduction", "intro-foreword"
+ * BS has 62 texts (verses) plus intro segments.
+ * Verses are stored with: book "bs", division null, chapter 5, verse = text number.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
+import { getSingleVerse, type VerseRecord } from "@/lib/api";
+
+const CODE = "bs";
 
 // ---------------------------------------------------------------------------
-// Constants
+// Re-export types with book-specific names for backwards compatibility
 // ---------------------------------------------------------------------------
 
-const BOOK = "bs";
-const NO_VOLUME = 0;
+export type BsMeta = BookMeta;
+export type BsIntroSegment = IntroSegment;
+export type BsChapter = Chapter;
+export type BsSidebarItem = SidebarItem;
+export type BsVerse = VerseRecord;
 
 // ---------------------------------------------------------------------------
-// Text title lookup
+// Data accessors
 // ---------------------------------------------------------------------------
 
-const TEXT_TITLES: Record<number, string> = {
-  1: "Text 1",
-  2: "Text 2",
-  3: "Text 3",
-  4: "Text 4",
-  5: "Text 5",
-  6: "Text 6",
-  7: "Text 7",
-  8: "Text 8",
-  9: "Text 9",
-  10: "Text 10",
-  11: "Text 11",
-  12: "Text 12",
-  13: "Text 13",
-  14: "Text 14",
-  15: "Text 15",
-  16: "Text 16",
-  17: "Text 17",
-  18: "Text 18",
-  19: "Text 19",
-  20: "Text 20",
-  21: "Text 21",
-  22: "Text 22",
-  23: "Text 23",
-  24: "Text 24",
-  25: "Text 25",
-  26: "Text 26",
-  27: "Text 27",
-  28: "Text 28",
-  29: "Text 29",
-  30: "Text 30",
-  31: "Text 31",
-  32: "Text 32",
-  33: "Text 33",
-  34: "Text 34",
-  35: "Text 35",
-  36: "Text 36",
-  37: "Text 37",
-  38: "Text 38",
-  39: "Text 39",
-  40: "Text 40",
-  41: "Text 41",
-  42: "Text 42",
-  43: "Text 43",
-  44: "Text 44",
-  45: "Text 45",
-  46: "Text 46",
-  47: "Text 47",
-  48: "Text 48",
-  49: "Text 49",
-  50: "Text 50",
-  51: "Text 51",
-  52: "Text 52",
-  53: "Text 53",
-  54: "Text 54",
-  55: "Text 55",
-  56: "Text 56",
-  57: "Text 57",
-  58: "Text 58",
-  59: "Text 59",
-  60: "Text 60",
-  61: "Text 61",
-  62: "Text 62",
-};
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type BsMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalTexts: number;
-  texts: BsTextEntry[];
-};
-
-export type BsTextEntry = {
-  number: number;
-  title: string;
-  slug: string;
-};
-
-export type BsIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type BsVerse = {
-  book: string;
-  book_title: string;
-  text: number; // 1-62
-  title: string;
-  reference: string;
-  devanagari: string;
-  transliteration: string;
-  synonyms: { word: string; meanings: string[] }[];
-  translation: string;
-  purport: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type BsSidebarItem = {
-  /** URL-safe slug: "intro-introduction", "intro-foreword", "1" … "62" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "verse" */
-  type: string;
-  /** Text number for verses, or null for intro segments */
-  text: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/iso.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getBsMeta() {
+  return getBookMeta(CODE);
+}
+export async function getBsIntroSegments() {
+  return getIntroSegments(CODE);
+}
+export async function getBsIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
 
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-/** Normalize purport (string[] from Prisma) via normalizeParagraphs. */
-function normalizePurport(purport: string[] | JsonValue): string[] {
-  return normalizeParagraphs(purport);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, texts list, etc.)
- */
-export async function getBsMeta(): Promise<BsMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as BsMeta;
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments (from prose_chapters collection)
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getBsIntroSegments(): Promise<BsIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-introduction" (URL slug) and "introduction" (raw slug).
- */
-export async function getBsIntroSegment(
-  slug: string,
-): Promise<BsIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Verses (from verses collection)
-// ---------------------------------------------------------------------------
-
-/**
- * A single verse/text by slug.
- *
- * - "1"-"62" → chapter=1–62, verse=1
- *
- * Verse stored as chapter=text_number, verse=1 in the verses collection.
- */
 export async function getBsVerse(slug: string): Promise<BsVerse | null> {
-  const num = Number(slug);
-  if (!Number.isInteger(num) || num < 1 || num > 62) return null;
-  const textNum = num;
-
-  const doc = await prisma.verse.findFirst({
-    where: { book: BOOK, division: null, chapter: textNum, verse: 1 },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    book_title: doc.bookTitle,
-    text: doc.chapter, // chapter field stores the text number
-    title: TEXT_TITLES[doc.chapter] ?? `Text ${doc.chapter}`,
-    reference: doc.reference,
-    devanagari: doc.devanagari,
-    transliteration: doc.transliteration,
-    synonyms: doc.synonyms as { word: string; meanings: string[] }[],
-    translation: sanitizeHtml(doc.translation),
-    purport: normalizePurport(doc.purport),
-  };
+  const num = parseInt(slug, 10);
+  if (isNaN(num)) return null;
+  return getSingleVerse(CODE, null, 5, num);
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-introduction"  → intro segment
- *   "intro-foreword"      → intro segment
- *   "1" … "62"            → verse (text)
- */
 export async function getBsContent(
   slug: string,
-): Promise<BsVerse | BsIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getBsIntroSegment(slug);
+): Promise<BsVerse | BsIntroSegment | BsChapter | null> {
+  // Try as verse first (numeric slug)
+  if (/^\d+$/.test(slug)) {
+    const verse = await getBsVerse(slug);
+    if (verse) return verse;
   }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 62) {
-    return getBsVerse(String(num));
-  }
-
-  return null;
+  // Fall back to prose content (intro segments, etc.)
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: Introduction → Foreword → Texts 1-62
- */
-export async function getBsSidebarItems(): Promise<BsSidebarItem[]> {
-  const items: BsSidebarItem[] = [];
-
-  // 1. Introduction intro segment
-  items.push({
-    slug: "intro-introduction",
-    label: "Introduction",
-    type: "intro-segment",
-    text: null,
-  });
-
-  // 2. Foreword intro segment
-  items.push({
-    slug: "intro-foreword",
-    label: "Foreword",
-    type: "intro-segment",
-    text: null,
-  });
-
-  // 3. Texts 1-62 (verses)
-  for (let i = 1; i <= 62; i++) {
-    items.push({
-      slug: String(i),
-      label: `${i}. ${TEXT_TITLES[i]}`,
-      type: "verse",
-      text: i,
-    });
-  }
-
-  return items;
+export async function getBsSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/cbhc.ts b/lib/cbhc.ts
index 487d0c78..d4e459ec 100644
--- a/lib/cbhc.ts
+++ b/lib/cbhc.ts
@@ -1,299 +1,29 @@
-/**
- * Data access layer for Śrī Caitanya-bhāgavata Commentary (CBHC).
- *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * CBHC is a simple prose book with no volume structure and no intro segments —
- * just 4 chapters directly. We use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/cbhc/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
- */
+import {
+  getBookMeta,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+const CODE = "cbhc";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type CbhcMeta = BookMeta;
+export type CbhcChapterEntry = { number: number; title: string };
+export type CbhcChapter = Chapter;
+export type CbhcSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-const BOOK = "cbhc";
-
-const CBHC_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "cbhc");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type CbhcMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number | null;
-  description: string;
-  totalChapters: number;
-  chapters: CbhcChapterEntry[];
-};
-
-export type CbhcChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type CbhcChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type CbhcSidebarItem = {
-  /** URL-safe slug: "1", "2", "3", "4" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "chapter" */
-  type: string;
-  /** Chapter number */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getCbhcMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getCbhcChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getCbhcContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): CbhcChapter | null {
-  const filePath = path.join(
-    CBHC_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<CbhcChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getCbhcMeta(): Promise<CbhcMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as CbhcMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(CBHC_JSON_DIR, "intro.json");
-  return readLocalJson<CbhcMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–4).
- */
-export async function getCbhcChapter(
-  chapterNum: number,
-): Promise<CbhcChapter | null> {
-  if (chapterNum < 1 || chapterNum > 4 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "1" … "4"  → chapter
- */
-export async function getCbhcContent(
-  slug: string,
-): Promise<CbhcChapter | null> {
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 4) {
-    return getCbhcChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: chapters 1–4 (no intro segments)
- */
-export async function getCbhcSidebarItems(): Promise<CbhcSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getCbhcMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(meta: CbhcMeta): CbhcSidebarItem[] {
-  const items: CbhcSidebarItem[] = [];
-
-  // Chapters 1–4 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: CbhcMeta | null): CbhcSidebarItem[] {
-  const items: CbhcSidebarItem[] = [];
-
-  // Chapters from meta or scan local chapter JSONs
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(CBHC_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<CbhcChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  return items;
+export async function getCbhcSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/db.ts b/lib/db.ts
deleted file mode 100644
index a6b43737..00000000
--- a/lib/db.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-import { PrismaClient } from "@prisma/client";
-
-const globalForPrisma = globalThis as unknown as {
-  prisma: PrismaClient | undefined;
-};
-
-export const prisma = globalForPrisma.prisma ?? new PrismaClient();
-
-if (process.env.NODE_ENV !== "production") {
-  globalForPrisma.prisma = prisma;
-}
diff --git a/lib/disciples.ts b/lib/disciples.ts
index 5933be6e..28271217 100644
--- a/lib/disciples.ts
+++ b/lib/disciples.ts
@@ -2,14 +2,14 @@
  * Data access layer for Disciples.
  *
  * Provides queries for browsing disciples by letter, place, year, and search.
- * Uses the Prisma Disciple model (collection: disciples).
+ * Uses the BFF API instead of direct Prisma queries.
  *
  * Disciples have an initiatedName and suffix (e.g., "Dasa", "Devi Dasi", "Sw").
  * The letter index aggregates disciples by the first letter of their initiatedName.
  * Place and year groupings allow browsing by initiation location and year.
  */
 
-import { prisma } from "@/lib/db";
+import { bff, bffList } from "@/lib/bff";
 
 // Types
 
@@ -37,26 +37,51 @@ export type YearGroup = {
   count: number;
 };
 
-// --- Summary select clause (reused across queries) ---
-
-const discipleSummarySelect = {
-  id: true,
-  initiatedName: true,
-  suffix: true,
-  initiationDate: true,
-  initiationPlace: true,
-  isVerified: true,
-} as const;
-
 // --- Suffix filter type ---
 
 export type SuffixFilter = "all" | "Dasa" | "Devi Dasi";
 
+// --- BFF response types (snake_case from Go API) ---
+
+type BffDisciple = {
+  id: string;
+  initiated_name: string;
+  suffix: string;
+  initiation_date: string | null;
+  initiation_place: string | null;
+  karmi_name: string | null;
+  is_verified: boolean;
+};
+
+type BffLetterCount = {
+  _id: string;
+  count: number;
+};
+
+type BffSuffixCount = {
+  _id: string;
+  count: number;
+};
+
+// --- Field mapping helper ---
+
+function mapDisciple(d: BffDisciple): DiscipleSummary {
+  return {
+    id: d.id,
+    initiatedName: d.initiated_name,
+    suffix: d.suffix,
+    initiationDate: d.initiation_date ? new Date(d.initiation_date) : null,
+    initiationPlace: d.initiation_place ?? null,
+    isVerified: d.is_verified,
+  };
+}
+
 // --- Count ---
 
 /** Get total number of disciples in the collection. */
 export async function getTotalDiscipleCount(): Promise<number> {
-  return prisma.disciple.count();
+  const result = await bff<{ total: number }>("/disciples/count");
+  return result?.total ?? 0;
 }
 
 /** Get count of disciples matching optional letter + suffix filters. */
@@ -64,14 +89,19 @@ export async function getFilteredDiscipleCount(
   letter: string | null,
   suffix: SuffixFilter = "all",
 ): Promise<number> {
-  const where: Record<string, unknown> = {};
-  if (letter) {
-    where.initiatedName = { startsWith: letter, mode: "insensitive" };
+  const params: Record<string, string> = {};
+  if (letter) params.letter = letter;
+  if (suffix !== "all") params.suffix = suffix;
+
+  // If no filters, just use total count endpoint
+  if (!letter && suffix === "all") {
+    return getTotalDiscipleCount();
   }
-  if (suffix !== "all") {
-    where.suffix = suffix;
-  }
-  return prisma.disciple.count({ where });
+
+  // Fetch filtered list and count client-side
+  // TODO: Consider adding a dedicated BFF count endpoint with filter params for better performance
+  const disciples = await bffList<BffDisciple>("/disciples", { params });
+  return disciples.length;
 }
 
 // --- Letter-based queries ---
@@ -79,23 +109,16 @@ export async function getFilteredDiscipleCount(
 /**
  * Get all disciples whose initiatedName starts with the given letter.
  *
- * Uses Prisma's `startsWith` filter with case-insensitive mode.
- * Results are ordered by initiatedName ascending.
+ * Uses BFF endpoint with letter query param.
+ * Results are ordered by initiatedName ascending (handled by BFF).
  */
 export async function getDisciplesByLetter(
   letter: string,
 ): Promise<DiscipleSummary[]> {
-  const disciples = await prisma.disciple.findMany({
-    where: {
-      initiatedName: {
-        startsWith: letter,
-        mode: "insensitive",
-      },
-    },
-    orderBy: { initiatedName: "asc" },
-    select: discipleSummarySelect,
+  const disciples = await bffList<BffDisciple>("/disciples", {
+    params: { letter },
   });
-  return disciples;
+  return disciples.map(mapDisciple);
 }
 
 /**
@@ -107,16 +130,11 @@ export async function getDisciplesByLetter(
 export async function getAllDisciples(
   suffix: SuffixFilter = "all",
 ): Promise<DiscipleSummary[]> {
-  const where: Record<string, unknown> = {};
-  if (suffix !== "all") {
-    where.suffix = suffix;
-  }
-  const disciples = await prisma.disciple.findMany({
-    where,
-    orderBy: { initiatedName: "asc" },
-    select: discipleSummarySelect,
-  });
-  return disciples;
+  const params: Record<string, string> = {};
+  if (suffix !== "all") params.suffix = suffix;
+
+  const disciples = await bffList<BffDisciple>("/disciples", { params });
+  return disciples.map(mapDisciple);
 }
 
 /**
@@ -133,19 +151,12 @@ export async function getFilteredDisciples(
   letter: string | null,
   suffix: SuffixFilter = "all",
 ): Promise<DiscipleSummary[]> {
-  const where: Record<string, unknown> = {};
-  if (letter) {
-    where.initiatedName = { startsWith: letter, mode: "insensitive" };
-  }
-  if (suffix !== "all") {
-    where.suffix = suffix;
-  }
-  const disciples = await prisma.disciple.findMany({
-    where,
-    orderBy: { initiatedName: "asc" },
-    select: discipleSummarySelect,
-  });
-  return disciples;
+  const params: Record<string, string> = {};
+  if (letter) params.letter = letter;
+  if (suffix !== "all") params.suffix = suffix;
+
+  const disciples = await bffList<BffDisciple>("/disciples", { params });
+  return disciples.map(mapDisciple);
 }
 
 /**
@@ -156,42 +167,22 @@ export async function getFilteredDisciples(
 export async function getDiscipleSuffixCounts(): Promise<
   { suffix: string; count: number }[]
 > {
-  const disciples = await prisma.disciple.findMany({
-    select: { suffix: true },
-  });
-
-  const counts: Record<string, number> = {};
-  for (const d of disciples) {
-    counts[d.suffix] = (counts[d.suffix] || 0) + 1;
-  }
-
-  return Object.entries(counts)
-    .map(([suffix, count]) => ({ suffix, count }))
+  const suffixes = await bffList<BffSuffixCount>("/disciples/suffixes");
+  return suffixes
+    .map((s) => ({ suffix: s._id, count: s.count }))
     .sort((a, b) => b.count - a.count);
 }
 
 /**
  * Get counts of disciples grouped by the first letter of their initiatedName.
  *
- * Fetches all initiatedName values and aggregates first letters in JavaScript
- * (Prisma/MongoDB doesn't support substring aggregations easily).
+ * Uses the BFF /disciples/letters endpoint which returns pre-aggregated data.
  * Returns results sorted alphabetically by letter.
  */
 export async function getDiscipleLetterCounts(): Promise<LetterCount[]> {
-  const disciples = await prisma.disciple.findMany({
-    select: { initiatedName: true },
-  });
-
-  const counts: Record<string, number> = {};
-  for (const d of disciples) {
-    if (d.initiatedName && d.initiatedName.length > 0) {
-      const letter = d.initiatedName[0].toUpperCase();
-      counts[letter] = (counts[letter] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([letter, count]) => ({ letter, count }))
+  const letters = await bffList<BffLetterCount>("/disciples/letters");
+  return letters
+    .map((l) => ({ letter: l._id, count: l.count }))
     .sort((a, b) => a.letter.localeCompare(b.letter));
 }
 
@@ -200,19 +191,18 @@ export async function getDiscipleLetterCounts(): Promise<LetterCount[]> {
 /**
  * Get unique initiation places with disciple counts.
  *
- * Fetches all non-null initiationPlace values and aggregates in JavaScript.
+ * No dedicated BFF endpoint — fetches all disciples and aggregates in JS.
  * Returns results sorted by count descending.
+ *
+ * TODO: Add a BFF endpoint (GET /api/v1/disciples/places) for better performance.
  */
 export async function getDisciplePlaces(): Promise<PlaceGroup[]> {
-  const disciples = await prisma.disciple.findMany({
-    where: { initiationPlace: { not: null } },
-    select: { initiationPlace: true },
-  });
+  const disciples = await bffList<BffDisciple>("/disciples");
 
   const counts: Record<string, number> = {};
   for (const d of disciples) {
-    if (d.initiationPlace) {
-      counts[d.initiationPlace] = (counts[d.initiationPlace] || 0) + 1;
+    if (d.initiation_place) {
+      counts[d.initiation_place] = (counts[d.initiation_place] || 0) + 1;
     }
   }
 
@@ -224,17 +214,20 @@ export async function getDisciplePlaces(): Promise<PlaceGroup[]> {
 /**
  * Get all disciples initiated at a given place.
  *
+ * No dedicated BFF endpoint — fetches all disciples and filters in JS.
  * Results are ordered by initiatedName ascending.
+ *
+ * TODO: Add BFF query param support (GET /api/v1/disciples?place=...) for better performance.
  */
 export async function getDisciplesByPlace(
   place: string,
 ): Promise<DiscipleSummary[]> {
-  const disciples = await prisma.disciple.findMany({
-    where: { initiationPlace: place },
-    orderBy: { initiatedName: "asc" },
-    select: discipleSummarySelect,
-  });
-  return disciples;
+  const disciples = await bffList<BffDisciple>("/disciples");
+
+  return disciples
+    .filter((d) => d.initiation_place === place)
+    .map(mapDisciple)
+    .sort((a, b) => a.initiatedName.localeCompare(b.initiatedName));
 }
 
 // --- Year-based queries ---
@@ -242,21 +235,21 @@ export async function getDisciplesByPlace(
 /**
  * Get unique initiation years with disciple counts.
  *
- * Fetches all non-null initiationDate values and aggregates years in JavaScript
- * (Prisma/MongoDB doesn't support date-part aggregations easily).
+ * No dedicated BFF endpoint — fetches all disciples and aggregates years in JS.
  * Returns results sorted by year ascending.
+ *
+ * TODO: Add a BFF endpoint (GET /api/v1/disciples/years) for better performance.
  */
 export async function getDiscipleYears(): Promise<YearGroup[]> {
-  const disciples = await prisma.disciple.findMany({
-    where: { initiationDate: { not: null } },
-    select: { initiationDate: true },
-  });
+  const disciples = await bffList<BffDisciple>("/disciples");
 
   const counts: Record<number, number> = {};
   for (const d of disciples) {
-    if (d.initiationDate) {
-      const year = d.initiationDate.getFullYear();
-      counts[year] = (counts[year] || 0) + 1;
+    if (d.initiation_date) {
+      const year = new Date(d.initiation_date).getFullYear();
+      if (!isNaN(year)) {
+        counts[year] = (counts[year] || 0) + 1;
+      }
     }
   }
 
@@ -268,27 +261,24 @@ export async function getDiscipleYears(): Promise<YearGroup[]> {
 /**
  * Get all disciples initiated in a given year.
  *
- * Uses a date range query (gte: Jan 1 of year, lt: Jan 1 of year+1)
- * to match all initiationDate values within the calendar year.
+ * No dedicated BFF endpoint — fetches all disciples and filters in JS.
  * Results are ordered by initiatedName ascending.
+ *
+ * TODO: Add BFF query param support (GET /api/v1/disciples?year=...) for better performance.
  */
 export async function getDisciplesByYear(
   year: number,
 ): Promise<DiscipleSummary[]> {
-  const startOfYear = new Date(year, 0, 1);
-  const startOfNextYear = new Date(year + 1, 0, 1);
+  const disciples = await bffList<BffDisciple>("/disciples");
 
-  const disciples = await prisma.disciple.findMany({
-    where: {
-      initiationDate: {
-        gte: startOfYear,
-        lt: startOfNextYear,
-      },
-    },
-    orderBy: { initiatedName: "asc" },
-    select: discipleSummarySelect,
-  });
-  return disciples;
+  return disciples
+    .filter((d) => {
+      if (!d.initiation_date) return false;
+      const dYear = new Date(d.initiation_date).getFullYear();
+      return dYear === year;
+    })
+    .map(mapDisciple)
+    .sort((a, b) => a.initiatedName.localeCompare(b.initiatedName));
 }
 
 // --- Search ---
@@ -296,22 +286,14 @@ export async function getDisciplesByYear(
 /**
  * Search disciples by initiatedName using case-insensitive matching.
  *
- * Uses Prisma's `contains` filter with case-insensitive mode.
+ * Uses BFF search endpoint.
  * Results are limited to 100 and ordered by initiatedName ascending.
  */
 export async function searchDisciples(
   query: string,
 ): Promise<DiscipleSummary[]> {
-  const disciples = await prisma.disciple.findMany({
-    where: {
-      initiatedName: {
-        contains: query,
-        mode: "insensitive",
-      },
-    },
-    orderBy: { initiatedName: "asc" },
-    take: 100,
-    select: discipleSummarySelect,
+  const disciples = await bffList<BffDisciple>("/disciples/search", {
+    params: { q: query },
   });
-  return disciples;
+  return disciples.map(mapDisciple);
 }
diff --git a/lib/ds.ts b/lib/ds.ts
index 5734d288..b4db3710 100644
--- a/lib/ds.ts
+++ b/lib/ds.ts
@@ -1,325 +1,47 @@
 /**
  * Data access layer for Dialectic Spiritualism (DS).
  *
- * Reads from MongoDB via Prisma.
- * DS is a large prose/dialogue book with 3 intro segments (front-pages,
- * foreword, preface) and 13 parent chapters, each containing philosopher
- * sub-chapters (e.g., "1-1" Socrates, "1-2" Plato, "1-3" Aristotle).
- * 38 philosopher sub-chapters total.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  getNavigableItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ds";
 
-const BOOK = "ds";
+export type DsMeta = BookMeta;
+export type DsSubChapterEntry = { slug: string; title: string };
+export type DsIntroSegment = IntroSegment;
+export type DsChapter = Chapter;
+export type DsSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type DsMeta = {
-  book: string;
-  title: string;
-  subtitle: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: DsParentChapter[];
-};
-
-export type DsParentChapter = {
-  number: number;
-  title: string;
-  subChapters: DsSubChapterEntry[];
-};
-
-export type DsSubChapterEntry = {
-  slug: string; // "1-1", "1-2", etc.
-  title: string;
-};
-
-export type DsIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type DsChapter = {
-  book: string;
-  chapter: string; // "1-1", "2-1", etc.
-  parentChapter: number;
-  subChapter: number;
-  title: string;
-  parentTitle: string;
-  type: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type DsSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1-1", "parent-1", etc. */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "parent" | "sub-chapter" */
-  type: string;
-  /** Parent chapter number, or null for intro segments */
-  parentChapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getDsMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getDsIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list with sub-chapters, etc.)
- */
-export async function getDsMeta(): Promise<DsMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as DsMeta;
+export async function getDsIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getDsIntroSegments(): Promise<DsIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getDsChapter(slug: string) {
+  return getChapter(CODE, slug);
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getDsIntroSegment(
-  slug: string,
-): Promise<DsIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getDsContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters (sub-chapters like "1-1", "2-3", etc.)
-// ---------------------------------------------------------------------------
-
-/**
- * A sub-chapter by its slug (e.g. "1-1", "2-3").
- */
-export async function getDsChapter(slug: string): Promise<DsChapter | null> {
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug,
-      },
-    },
-  });
-  if (!doc) return null;
-
-  // Parse parentChapter and subChapter from slug "X-Y"
-  const parts = slug.split("-");
-  const parentChapter = parseInt(parts[0], 10);
-  const subChapter = parseInt(parts[1], 10);
-
-  // Derive parentTitle from meta if available
-  const meta = await getDsMeta();
-  const parentEntry = meta?.chapters.find((ch) => ch.number === parentChapter);
-  const parentTitle = parentEntry?.title ?? "";
-
-  return {
-    book: doc.book,
-    chapter: slug,
-    parentChapter,
-    subChapter,
-    title: doc.title,
-    parentTitle,
-    type: doc.type,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "intro-foreword"     → intro segment
- *   "intro-preface"      → intro segment
- *   "1-1", "2-3", etc.   → sub-chapter
- */
-export async function getDsContent(
-  slug: string,
-): Promise<DsChapter | DsIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getDsIntroSegment(slug);
-  }
-
-  // Sub-chapter slug like "1-1", "2-3"
-  return getDsChapter(slug);
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list with hierarchical structure.
- *
- * Order: front-pages → foreword → preface
- *        → parent-1 (label) → 1-1, 1-2, 1-3 → parent-2 (label) → 2-1, 2-2, ...
- *
- * "parent" type items are non-clickable headings. Only "intro-segment" and
- * "sub-chapter" items are navigable pages.
- */
-export async function getDsSidebarItems(): Promise<DsSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getDsMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: DsSidebarItem[] = [];
-
-  // Intro segments (all come before chapters — no back matter for DS)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        parentChapter: null,
-      });
-    }
-  }
-
-  // Chapters — grouped by parent chapter with sub-chapters
-  for (const ch of meta.chapters) {
-    // Parent heading (non-clickable label)
-    items.push({
-      slug: `parent-${ch.number}`,
-      label: `${ch.number}. ${ch.title}`,
-      type: "parent",
-      parentChapter: ch.number,
-    });
-
-    // Sub-chapters under this parent
-    for (const sub of ch.subChapters) {
-      items.push({
-        slug: sub.slug,
-        label: sub.title,
-        type: "sub-chapter",
-        parentChapter: ch.number,
-      });
-    }
-  }
-
-  return items;
-}
-
-/**
- * Get the flat list of navigable sidebar items (excludes "parent" headings).
- * Used for prev/next navigation.
- */
-export function getNavigableItems(items: DsSidebarItem[]): DsSidebarItem[] {
-  return items.filter((item) => item.type !== "parent");
+export async function getDsSidebarItems() {
+  return getSidebarItems(CODE);
 }
+export { getNavigableItems };
diff --git a/lib/ej.ts b/lib/ej.ts
index f2731dbc..15582961 100644
--- a/lib/ej.ts
+++ b/lib/ej.ts
@@ -1,282 +1,57 @@
 /**
  * Data access layer for Easy Journey to Other Planets (EJ).
  *
- * Reads from MongoDB via Prisma.
- * EJ is a simple prose book with 2 chapters and 2 intro segments.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ej";
 
-const BOOK = "ej";
+// Re-export types with book-specific names for backwards compatibility
+export type EjMeta = BookMeta;
+export type EjChapterEntry = { number: number; title: string };
+export type EjIntroSegment = IntroSegment;
+export type EjChapter = Chapter;
+export type EjSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type EjMeta = {
-  book: string;
-  title: string;
-  subtitle: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: EjChapterEntry[];
-};
-
-export type EjChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type EjIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type EjChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type EjSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "intro-preface", "1", "2" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/nod.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getEjMeta(): Promise<EjMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as EjMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getEjIntroSegments(): Promise<EjIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getEjIntroSegment(
   slug: string,
 ): Promise<EjIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–2).
- */
 export async function getEjChapter(
   chapterNum: number,
 ): Promise<EjChapter | null> {
-  if (chapterNum < 1 || chapterNum > 2 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "intro-preface"      → intro segment
- *   "1", "2"             → chapter
- */
 export async function getEjContent(
   slug: string,
 ): Promise<EjChapter | EjIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getEjIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 2) {
-    return getEjChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → preface → chapters 1–2
- */
 export async function getEjSidebarItems(): Promise<EjSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getEjMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: EjSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–2 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/ek.ts b/lib/ek.ts
index 511b0ad5..1e3f8171 100644
--- a/lib/ek.ts
+++ b/lib/ek.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for Elevation to Kṛṣṇa Consciousness (EK).
  *
- * Reads from MongoDB via Prisma.
- * EK is a simple prose book with 1 intro segment (front-pages) and 6 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ek";
 
-const BOOK = "ek";
+// Re-export types with book-specific names for backwards compatibility
+export type EkMeta = BookMeta;
+export type EkChapterEntry = { number: number; title: string };
+export type EkIntroSegment = IntroSegment;
+export type EkChapter = Chapter;
+export type EkSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type EkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: EkChapterEntry[];
-};
-
-export type EkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type EkIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type EkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type EkSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "6" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getEkMeta(): Promise<EkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as EkMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getEkIntroSegments(): Promise<EkIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getEkIntroSegment(
   slug: string,
 ): Promise<EkIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–6).
- */
 export async function getEkChapter(
   chapterNum: number,
 ): Promise<EkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 6 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "6"            → chapter
- */
 export async function getEkContent(
   slug: string,
 ): Promise<EkChapter | EkIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getEkIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 6) {
-    return getEkChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–6
- */
 export async function getEkSidebarItems(): Promise<EkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getEkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: EkSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–6 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/gg.ts b/lib/gg.ts
index f25dc78f..561ebd3a 100644
--- a/lib/gg.ts
+++ b/lib/gg.ts
@@ -1,443 +1,39 @@
-/**
- * Data access layer for Gītār Gān (GG).
- *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * GG is a prose/poetry book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/gg/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
- */
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+const CODE = "gg";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type GgMeta = BookMeta;
+export type GgChapterEntry = { number: number; title: string };
+export type GgIntroSegment = IntroSegment;
+export type GgChapter = Chapter;
+export type GgSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-const BOOK = "gg";
-
-const GG_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "gg");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type GgMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: GgChapterEntry[];
-};
-
-export type GgChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type GgIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type GgChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type GgSidebarItem = {
-  /** URL-safe slug: "intro-introduction", "1", "18" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getGgMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getGgIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getGgIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): GgIntroSegment[] {
-  const introDir = path.join(GG_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: GgIntroSegment[] = [];
-  const files = ["introduction.json"];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<GgIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getGgChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): GgIntroSegment | null {
-  const filePath = path.join(GG_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<GgIntroSegment>(filePath);
+export async function getGgContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): GgChapter | null {
-  const filePath = path.join(
-    GG_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<GgChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getGgMeta(): Promise<GgMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as GgMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(GG_JSON_DIR, "intro.json");
-  return readLocalJson<GgMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getGgIntroSegments(): Promise<GgIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-introduction" (URL slug) and "introduction" (raw slug).
- */
-export async function getGgIntroSegment(
-  slug: string,
-): Promise<GgIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–18).
- */
-export async function getGgChapter(
-  chapterNum: number,
-): Promise<GgChapter | null> {
-  if (chapterNum < 1 || chapterNum > 18 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-introduction"       → intro segment
- *   "1" … "18"                 → chapter
- */
-export async function getGgContent(
-  slug: string,
-): Promise<GgChapter | GgIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getGgIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 18) {
-    return getGgChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: introduction → chapters 1–18
- */
-export async function getGgSidebarItems(): Promise<GgSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getGgMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: GgMeta,
-  allDocs: { slug: string; title: string; type: string; chapter: number | null; order: number | null }[],
-): GgSidebarItem[] {
-  const items: GgSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) < 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–18 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Intro segments that come AFTER chapters (order >= 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) >= 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: GgMeta | null): GgSidebarItem[] {
-  const items: GgSidebarItem[] = [];
-
-  // Local intro segments (front matter)
-  const introSegs = getLocalIntroSegments();
-  const frontMatter = introSegs.filter((s) => (s.order ?? 0) < 99);
-  const backMatter = introSegs.filter((s) => (s.order ?? 0) >= 99);
-
-  for (const seg of frontMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Chapters from meta or generate default 1-18
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(GG_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<GgChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  // Back matter
-  for (const seg of backMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  return items;
+export async function getGgSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/hkh.ts b/lib/hkh.ts
index ac2c8e78..729623cb 100644
--- a/lib/hkh.ts
+++ b/lib/hkh.ts
@@ -1,282 +1,45 @@
 /**
- * Data access layer for The Kṛṣṇa Consciousness Handbook (HKH).
+ * Data access layer for The Hare Kṛṣṇa Handbook (HKH).
  *
- * Reads from MongoDB via Prisma.
- * HKH is a prose book with 2 intro segments (front-pages, introduction)
- * and 19 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "hkh";
 
-const BOOK = "hkh";
+export type HkhMeta = BookMeta;
+export type HkhChapterEntry = { number: number; title: string };
+export type HkhIntroSegment = IntroSegment;
+export type HkhChapter = Chapter;
+export type HkhSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type HkhMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: HkhChapterEntry[];
-};
-
-export type HkhChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type HkhIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type HkhChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type HkhSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "intro-introduction", "1", "2", … "7" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getHkhMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getHkhIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getHkhMeta(): Promise<HkhMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as HkhMeta;
+export async function getHkhIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getHkhIntroSegments(): Promise<HkhIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getHkhChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getHkhIntroSegment(
-  slug: string,
-): Promise<HkhIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getHkhContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–19).
- */
-export async function getHkhChapter(
-  chapterNum: number,
-): Promise<HkhChapter | null> {
-  if (chapterNum < 1 || chapterNum > 19 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"    → intro segment
- *   "intro-introduction"   → intro segment
- *   "1" … "7"              → chapter
- */
-export async function getHkhContent(
-  slug: string,
-): Promise<HkhChapter | HkhIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getHkhIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 19) {
-    return getHkhChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → introduction → chapters 1–19
- */
-export async function getHkhSidebarItems(): Promise<HkhSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getHkhMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: HkhSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–19 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+export async function getHkhSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/iso.ts b/lib/iso.ts
index 067a044c..e2ab7da9 100644
--- a/lib/iso.ts
+++ b/lib/iso.ts
@@ -1,225 +1,47 @@
 /**
  * Data access layer for Śrī Īśopaniṣad (ISO).
  *
- * Reads from MongoDB via Prisma.
- * ISO is unique — it has BOTH verses (in the `verses` collection)
- * AND prose intro segments (in the `prose_chapters` collection).
- *
- * Verses were seeded with:
- *   - book: "iso", division: null
- *   - chapter = mantra number (0 for Invocation, 1-18 for mantras)
- *   - verse = always 1
- *
- * Intro segments were seeded with:
- *   - book: "iso", volume: 0, type: "intro-segment"
- *   - slugs like "intro-front-pages", "intro-introduction", "intro-about-the-author"
+ * Delegates to the generic book data layer (BFF API) for prose intro segments,
+ * and to lib/api.ts for verse (mantra) lookups.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
+import { getSingleVerse, type VerseRecord } from "@/lib/api";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "iso";
 
-const BOOK = "iso";
-const NO_VOLUME = 0;
+export type IsoMeta = BookMeta;
+export type IsoIntroSegment = IntroSegment;
+export type IsoChapter = Chapter;
+export type IsoSidebarItem = SidebarItem;
+export type IsoVerse = VerseRecord;
 
-// ---------------------------------------------------------------------------
-// Mantra title lookup
-// ---------------------------------------------------------------------------
-
-const MANTRA_TITLES: Record<number, string> = {
-  0: "Invocation",
-  1: "Mantra One",
-  2: "Mantra Two",
-  3: "Mantra Three",
-  4: "Mantra Four",
-  5: "Mantra Five",
-  6: "Mantra Six",
-  7: "Mantra Seven",
-  8: "Mantra Eight",
-  9: "Mantra Nine",
-  10: "Mantra Ten",
-  11: "Mantra Eleven",
-  12: "Mantra Twelve",
-  13: "Mantra Thirteen",
-  14: "Mantra Fourteen",
-  15: "Mantra Fifteen",
-  16: "Mantra Sixteen",
-  17: "Mantra Seventeen",
-  18: "Mantra Eighteen",
-};
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type IsoMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalMantras: number;
-  mantras: IsoMantraEntry[];
-};
-
-export type IsoMantraEntry = {
-  number: number;
-  title: string;
-  slug: string;
-};
-
-export type IsoIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type IsoVerse = {
-  book: string;
-  book_title: string;
-  mantra: number;
-  title: string;
-  reference: string;
-  devanagari: string;
-  transliteration: string;
-  synonyms: { word: string; meanings: string[] }[];
-  translation: string;
-  purport: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type IsoSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "invocation", "1", "intro-about-the-author" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "verse" */
-  type: string;
-  /** Mantra number (0 for invocation), or null for non-verse items */
-  mantra: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/nod.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getIsoMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getIsoIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-/** Normalize purport (string[] from Prisma) via normalizeParagraphs. */
-function normalizePurport(purport: string[] | JsonValue): string[] {
-  return normalizeParagraphs(purport);
+export async function getIsoIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, mantras list, etc.)
- */
-export async function getIsoMeta(): Promise<IsoMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as IsoMeta;
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments (from prose_chapters collection)
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getIsoIntroSegments(): Promise<IsoIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getIsoIntroSegment(
-  slug: string,
-): Promise<IsoIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Verses (from verses collection)
-// ---------------------------------------------------------------------------
-
 /**
  * A single verse/mantra by slug.
  *
- * - "invocation" → chapter=0, verse=1
- * - "1"-"18"     → chapter=1–18, verse=1
+ * ISO verses are stored with: book "iso", no division,
+ * chapter = mantra number (0 for invocation), verse = 1.
  */
 export async function getIsoVerse(slug: string): Promise<IsoVerse | null> {
   let mantraNum: number;
@@ -227,119 +49,25 @@ export async function getIsoVerse(slug: string): Promise<IsoVerse | null> {
   if (slug === "invocation") {
     mantraNum = 0;
   } else {
-    const num = Number(slug);
-    if (!Number.isInteger(num) || num < 1 || num > 18) return null;
+    const num = parseInt(slug, 10);
+    if (isNaN(num) || num < 1 || num > 18) return null;
     mantraNum = num;
   }
 
-  const doc = await prisma.verse.findFirst({
-    where: { book: BOOK, division: null, chapter: mantraNum, verse: 1 },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    book_title: doc.bookTitle,
-    mantra: doc.chapter, // chapter field stores the mantra number
-    title: MANTRA_TITLES[doc.chapter] ?? `Mantra ${doc.chapter}`,
-    reference: doc.reference,
-    devanagari: doc.devanagari,
-    transliteration: doc.transliteration,
-    synonyms: doc.synonyms as { word: string; meanings: string[] }[],
-    translation: sanitizeHtml(doc.translation),
-    purport: normalizePurport(doc.purport),
-  };
+  return getSingleVerse(CODE, null, mantraNum, 1);
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"         → intro segment
- *   "intro-introduction"        → intro segment
- *   "intro-about-the-author"    → intro segment
- *   "invocation"                → invocation verse
- *   "1" … "18"                  → mantra verse
- */
 export async function getIsoContent(
   slug: string,
-): Promise<IsoVerse | IsoIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getIsoIntroSegment(slug);
+): Promise<IsoVerse | IsoIntroSegment | IsoChapter | null> {
+  // Try as verse/mantra first (numeric slug or "invocation")
+  if (slug === "invocation" || /^\d+$/.test(slug)) {
+    const verse = await getIsoVerse(slug);
+    if (verse) return verse;
   }
-
-  if (slug === "invocation") {
-    return getIsoVerse("invocation");
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 18) {
-    return getIsoVerse(String(num));
-  }
-
-  return null;
+  // Fall back to prose content (intro segments, etc.)
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → introduction → invocation → mantras 1-18 → about-the-author
- */
-export async function getIsoSidebarItems(): Promise<IsoSidebarItem[]> {
-  const meta = await getIsoMeta();
-  if (!meta) return [];
-
-  const items: IsoSidebarItem[] = [];
-
-  // 1. Front pages intro segment
-  items.push({
-    slug: "intro-front-pages",
-    label: "Back Cover & Front Pages",
-    type: "intro-segment",
-    mantra: null,
-  });
-
-  // 2. Introduction (Teachings of the Vedas)
-  items.push({
-    slug: "intro-introduction",
-    label: "Introduction (Teachings of the Vedas)",
-    type: "intro-segment",
-    mantra: null,
-  });
-
-  // 3. Invocation + Mantras 1-18 (from meta.mantras)
-  for (const m of meta.mantras) {
-    if (m.number === 0) {
-      items.push({
-        slug: "invocation",
-        label: "Invocation",
-        type: "verse",
-        mantra: 0,
-      });
-    } else {
-      items.push({
-        slug: String(m.number),
-        label: `${m.number}. ${m.title}`,
-        type: "verse",
-        mantra: m.number,
-      });
-    }
-  }
-
-  // 4. About the Author intro segment (at the end)
-  items.push({
-    slug: "intro-about-the-author",
-    label: "About the Author",
-    type: "intro-segment",
-    mantra: null,
-  });
-
-  return items;
+export async function getIsoSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/journals.ts b/lib/journals.ts
index ccdb8cfd..8a71fea4 100644
--- a/lib/journals.ts
+++ b/lib/journals.ts
@@ -1,13 +1,11 @@
 /**
  * Data access layer for Journals.
  *
- * Uses dedicated Prisma models:
- *   - JournalMeta (collection: journal_meta)
- *   - JournalChapter (collection: journal_chapters)
+ * Uses the BFF API instead of direct Prisma queries.
+ * Falls back to local JSON files when BFF is unavailable.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import { bff, bffList } from "@/lib/bff";
 import fs from "fs";
 import path from "path";
 
@@ -65,6 +63,31 @@ export type JournalSidebarItem = {
   chapter: number;
 };
 
+// --- BFF response types ---
+
+type BffJournalMeta = {
+  id: string;
+  book: string;
+  data: {
+    title: string;
+    author: string;
+    year: number | null;
+    description: string | null;
+    totalChapters: number;
+    chapters: JournalChapterEntry[];
+  };
+};
+
+type BffJournalChapter = {
+  book: string;
+  chapter: number;
+  title: string;
+  type: string;
+  slug: string;
+  paragraphs: string[];
+  paragraphs_json?: string;
+};
+
 // HTML sanitisation
 function sanitizeHtml(html: string): string {
   let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
@@ -80,7 +103,7 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
+function normalizeParagraphs(paragraphs: string[] | unknown): string[] {
   let result: string[];
   if (typeof paragraphs === "string") {
     try {
@@ -97,6 +120,51 @@ function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
   return result.map(sanitizeHtml);
 }
 
+// --- BFF → domain mappers ---
+
+function mapBffMetaToJournalMetaData(raw: BffJournalMeta): JournalMetaData {
+  return {
+    book: raw.book,
+    title: raw.data.title,
+    author: raw.data.author,
+    year: raw.data.year ?? null,
+    description: raw.data.description ?? null,
+    totalChapters: raw.data.totalChapters,
+    chapters: raw.data.chapters,
+  };
+}
+
+function mapBffMetaToSummary(raw: BffJournalMeta): JournalSummary {
+  return {
+    book: raw.book,
+    title: raw.data.title,
+    author: raw.data.author,
+    year: raw.data.year ?? null,
+    description: raw.data.description ?? null,
+    totalChapters: raw.data.totalChapters,
+  };
+}
+
+function mapBffChapter(raw: BffJournalChapter): JournalChapterData {
+  // Handle paragraphs_json fallback
+  let paragraphs = raw.paragraphs;
+  if ((!paragraphs || !paragraphs.length) && raw.paragraphs_json) {
+    try {
+      paragraphs = JSON.parse(raw.paragraphs_json);
+    } catch {
+      paragraphs = [];
+    }
+  }
+
+  return {
+    book: raw.book,
+    chapter: raw.chapter,
+    title: raw.title,
+    type: raw.type,
+    paragraphs: normalizeParagraphs(paragraphs),
+  };
+}
+
 // Local JSON fallback helpers
 function findLocalDirForBook(bookCode: string): string | null {
   if (!fs.existsSync(LOCAL_JSON_DIR)) return null;
@@ -160,21 +228,9 @@ function getLocalChapterBySlug(
 // Public API
 export async function getAllJournals(): Promise<JournalSummary[]> {
   try {
-    const results = await prisma.journalMeta.findMany({
-      orderBy: { book: "asc" },
-    });
+    const results = await bffList<BffJournalMeta>("/journals");
     if (results.length > 0) {
-      return results.map((row) => {
-        const data = row.data as unknown as JournalMetaData;
-        return {
-          book: row.book,
-          title: data.title,
-          author: data.author,
-          year: data.year ?? null,
-          description: data.description ?? null,
-          totalChapters: data.totalChapters,
-        };
-      });
+      return results.map(mapBffMetaToSummary);
     }
   } catch {
     /* fall through */
@@ -194,10 +250,8 @@ export async function getJournalMeta(
   bookCode: string,
 ): Promise<JournalMetaData | null> {
   try {
-    const row = await prisma.journalMeta.findUnique({
-      where: { book: bookCode },
-    });
-    if (row) return row.data as unknown as JournalMetaData;
+    const raw = await bff<BffJournalMeta>(`/journals/${bookCode}`);
+    if (raw) return mapBffMetaToJournalMetaData(raw);
   } catch {
     /* fall through */
   }
@@ -210,17 +264,10 @@ export async function getJournalChapterBySlug(
 ): Promise<JournalChapterData | null> {
   if (!slug) return null;
   try {
-    const doc = await prisma.journalChapter.findUnique({
-      where: { book_slug: { book: bookCode, slug } },
-    });
-    if (doc)
-      return {
-        book: doc.book,
-        chapter: doc.chapter,
-        title: doc.title,
-        type: doc.type,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      };
+    const raw = await bff<BffJournalChapter>(
+      `/journals/${bookCode}/chapters/${slug}`,
+    );
+    if (raw) return mapBffChapter(raw);
   } catch {
     /* fall through */
   }
diff --git a/lib/lcl.ts b/lib/lcl.ts
index 92f51286..f15798f2 100644
--- a/lib/lcl.ts
+++ b/lib/lcl.ts
@@ -1,445 +1,45 @@
 /**
  * Data access layer for Life Comes from Life (LCL).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * LCL is a prose/dialogue book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/lcl/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "lcl";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type LclMeta = BookMeta;
+export type LclChapterEntry = { number: number; title: string };
+export type LclIntroSegment = IntroSegment;
+export type LclChapter = Chapter;
+export type LclSidebarItem = SidebarItem;
 
-const BOOK = "lcl";
-
-const LCL_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "lcl");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type LclMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: LclChapterEntry[];
-};
-
-export type LclChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type LclIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type LclChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type LclSidebarItem = {
-  /** URL-safe slug: "intro-foreword", "1", "16", "intro-about-the-author" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getLclMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getLclIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getLclIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): LclIntroSegment[] {
-  const introDir = path.join(LCL_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: LclIntroSegment[] = [];
-  const files = ["foreword.json", "introduction.json", "about-the-author.json"];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<LclIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getLclChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): LclIntroSegment | null {
-  const filePath = path.join(LCL_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<LclIntroSegment>(filePath);
+export async function getLclContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): LclChapter | null {
-  const filePath = path.join(
-    LCL_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<LclChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getLclMeta(): Promise<LclMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as LclMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(LCL_JSON_DIR, "intro.json");
-  return readLocalJson<LclMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getLclIntroSegments(): Promise<LclIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-foreword" (URL slug) and "foreword" (raw slug).
- */
-export async function getLclIntroSegment(
-  slug: string,
-): Promise<LclIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–16).
- */
-export async function getLclChapter(
-  chapterNum: number,
-): Promise<LclChapter | null> {
-  if (chapterNum < 1 || chapterNum > 16 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-foreword"           → intro segment
- *   "intro-introduction"       → intro segment
- *   "intro-about-the-author"   → intro segment
- *   "1" … "16"                 → chapter
- */
-export async function getLclContent(
-  slug: string,
-): Promise<LclChapter | LclIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getLclIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 16) {
-    return getLclChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: foreword → introduction → chapters 1–16 → about-the-author
- */
-export async function getLclSidebarItems(): Promise<LclSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getLclMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: LclMeta,
-  allDocs: { slug: string; title: string; type: string; chapter: number | null; order: number | null }[],
-): LclSidebarItem[] {
-  const items: LclSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) < 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–16 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Intro segments that come AFTER chapters (order >= 99, e.g. about-the-author)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) >= 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: LclMeta | null): LclSidebarItem[] {
-  const items: LclSidebarItem[] = [];
-
-  // Local intro segments (front matter)
-  const introSegs = getLocalIntroSegments();
-  const frontMatter = introSegs.filter((s) => (s.order ?? 0) < 99);
-  const backMatter = introSegs.filter((s) => (s.order ?? 0) >= 99);
-
-  for (const seg of frontMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Chapters from meta or generate default 1-16
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(LCL_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<LclChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  // Back matter (about-the-author)
-  for (const seg of backMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  return items;
+export async function getLclSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/letters.ts b/lib/letters.ts
index 034719f7..b5e36087 100644
--- a/lib/letters.ts
+++ b/lib/letters.ts
@@ -2,7 +2,7 @@
  * Data access layer for Letters.
  *
  * Provides queries for browsing letters by year, recipient, and location.
- * Uses the Prisma Letter model (collection: letters).
+ * Calls the BFF API for all data access (no direct Prisma usage).
  *
  * Recipients are stored as an array (e.g., ["Mukunda", "Janaki"]).
  * The recipient list aggregates individual names across all letters,
@@ -10,9 +10,12 @@
  * ANY recipient (individual or group).
  */
 
-import { prisma } from "@/lib/db";
+import { bff, bffList } from "@/lib/bff";
 
+// ---------------------------------------------------------------------------
 // Types
+// ---------------------------------------------------------------------------
+
 export type LetterSummary = {
   slug: string;
   recipients: string[];
@@ -52,7 +55,43 @@ export type LocationGroup = {
   count: number;
 };
 
-// Sanitize
+// ---------------------------------------------------------------------------
+// BFF response types (snake_case from Go)
+// ---------------------------------------------------------------------------
+
+type BffLetterSummary = {
+  slug: string;
+  recipients: string[];
+  recipient_display: string;
+  date: string | null;
+  year: number | null;
+  month: number | null;
+  location: string | null;
+};
+
+type BffLetterFull = {
+  slug: string;
+  recipients: string[];
+  recipient_display: string;
+  date: string | null;
+  date_ref: string | null;
+  year: number | null;
+  month: number | null;
+  day: number | null;
+  location: string | null;
+  salutation: string | null;
+  paragraphs: string[];
+};
+
+type BffAggregation = {
+  _id: string | number;
+  count: number;
+};
+
+// ---------------------------------------------------------------------------
+// HTML sanitisation
+// ---------------------------------------------------------------------------
+
 function sanitizeHtml(html: string): string {
   let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
   clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
@@ -65,23 +104,60 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
-// --- Index/overview queries ---
+// ---------------------------------------------------------------------------
+// Mappers (BFF snake_case → frontend camelCase)
+// ---------------------------------------------------------------------------
+
+function mapLetterSummary(item: BffLetterSummary): LetterSummary {
+  return {
+    slug: item.slug,
+    recipients: item.recipients ?? [],
+    recipientDisplay: item.recipient_display ?? "",
+    date: item.date ?? null,
+    year: item.year ?? null,
+    month: item.month ?? null,
+    location: item.location ?? null,
+  };
+}
+
+function mapLetterFull(item: BffLetterFull): LetterFull {
+  return {
+    slug: item.slug,
+    recipients: item.recipients ?? [],
+    recipientDisplay: item.recipient_display ?? "",
+    date: item.date ?? null,
+    dateRef: item.date_ref ?? null,
+    year: item.year ?? null,
+    month: item.month ?? null,
+    day: item.day ?? null,
+    location: item.location ?? null,
+    salutation: item.salutation ?? null,
+    paragraphs: (item.paragraphs ?? []).map(sanitizeHtml),
+  };
+}
+
+function mapYearGroup(item: BffAggregation): YearGroup {
+  return { year: Number(item._id), count: item.count };
+}
+
+function mapRecipientGroup(item: BffAggregation): RecipientGroup {
+  return { name: String(item._id), count: item.count };
+}
+
+function mapLocationGroup(item: BffAggregation): LocationGroup {
+  return { name: String(item._id), count: item.count };
+}
+
+// ---------------------------------------------------------------------------
+// Index / overview queries
+// ---------------------------------------------------------------------------
 
 export async function getLetterYears(): Promise<YearGroup[]> {
-  const letters = await prisma.letter.findMany({
-    where: { year: { not: null } },
-    select: { year: true },
+  const raw = await bffList<BffAggregation>("/letters/years", {
+    tags: ["letters"],
   });
-
-  const counts: Record<number, number> = {};
-  for (const l of letters) {
-    if (l.year) {
-      counts[l.year] = (counts[l.year] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([year, count]) => ({ year: Number(year), count }))
+  return raw
+    .map(mapYearGroup)
     .filter((g) => g.year >= 1940 && g.year <= 1980)
     .sort((a, b) => a.year - b.year);
 }
@@ -90,67 +166,39 @@ export async function getLetterYears(): Promise<YearGroup[]> {
  * Get all unique individual recipients with letter counts.
  *
  * Each letter has a `recipients` array (e.g., ["Mukunda", "Janaki"]).
- * This function aggregates across all letters so that "Mukunda" appears
- * once with count = total letters where Mukunda is ANY recipient.
+ * The BFF aggregation endpoint already aggregates across all letters so
+ * that "Mukunda" appears once with count = total letters where Mukunda
+ * is ANY recipient.
  */
 export async function getLetterRecipients(): Promise<RecipientGroup[]> {
-  const letters = await prisma.letter.findMany({
-    select: { recipients: true },
+  const raw = await bffList<BffAggregation>("/letters/recipients", {
+    tags: ["letters"],
   });
-
-  const counts: Record<string, number> = {};
-  for (const l of letters) {
-    for (const r of l.recipients) {
-      counts[r] = (counts[r] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([name, count]) => ({ name, count }))
-    .sort((a, b) => b.count - a.count);
+  return raw.map(mapRecipientGroup).sort((a, b) => b.count - a.count);
 }
 
 export async function getLetterLocations(): Promise<LocationGroup[]> {
-  const letters = await prisma.letter.findMany({
-    where: { location: { not: null } },
-    select: { location: true },
+  const raw = await bffList<BffAggregation>("/letters/locations", {
+    tags: ["letters"],
   });
-
-  const counts: Record<string, number> = {};
-  for (const l of letters) {
-    if (l.location) {
-      counts[l.location] = (counts[l.location] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([name, count]) => ({ name, count }))
-    .sort((a, b) => b.count - a.count);
+  return raw.map(mapLocationGroup).sort((a, b) => b.count - a.count);
 }
 
-// --- Letter list queries ---
+// ---------------------------------------------------------------------------
+// Letter list queries
+// ---------------------------------------------------------------------------
 
 export async function getLettersByYear(year: number): Promise<LetterSummary[]> {
-  const letters = await prisma.letter.findMany({
-    where: { year },
-    orderBy: [{ month: "asc" }, { day: "asc" }],
-    select: {
-      slug: true,
-      recipients: true,
-      recipientDisplay: true,
-      date: true,
-      year: true,
-      month: true,
-      location: true,
-    },
+  const raw = await bffList<BffLetterSummary>(`/letters/year/${year}`, {
+    tags: ["letters"],
   });
-  return letters;
+  return raw.map(mapLetterSummary);
 }
 
 /**
  * Get all letters where the given name is ANY recipient.
  *
- * Uses Prisma's `has` filter on the recipients array.
+ * The BFF endpoint handles the array-contains matching server-side.
  * Searching for "Mukunda" returns letters addressed to:
  *   - "Mukunda" (individual)
  *   - "Mukunda, Janaki" (group containing Mukunda)
@@ -159,63 +207,38 @@ export async function getLettersByYear(year: number): Promise<LetterSummary[]> {
 export async function getLettersByRecipient(
   recipient: string,
 ): Promise<LetterSummary[]> {
-  const letters = await prisma.letter.findMany({
-    where: { recipients: { has: recipient } },
-    orderBy: [{ year: "asc" }, { month: "asc" }, { day: "asc" }],
-    select: {
-      slug: true,
-      recipients: true,
-      recipientDisplay: true,
-      date: true,
-      year: true,
-      month: true,
-      location: true,
-    },
+  const encoded = encodeURIComponent(recipient);
+  const raw = await bffList<BffLetterSummary>(`/letters/recipient/${encoded}`, {
+    tags: ["letters"],
   });
-  return letters;
+  return raw.map(mapLetterSummary);
 }
 
 export async function getLettersByLocation(
   location: string,
 ): Promise<LetterSummary[]> {
-  const letters = await prisma.letter.findMany({
-    where: { location },
-    orderBy: [{ year: "asc" }, { month: "asc" }, { day: "asc" }],
-    select: {
-      slug: true,
-      recipients: true,
-      recipientDisplay: true,
-      date: true,
-      year: true,
-      month: true,
-      location: true,
-    },
+  const encoded = encodeURIComponent(location);
+  const raw = await bffList<BffLetterSummary>(`/letters/location/${encoded}`, {
+    tags: ["letters"],
   });
-  return letters;
+  return raw.map(mapLetterSummary);
 }
 
-// --- Single letter ---
+// ---------------------------------------------------------------------------
+// Single letter
+// ---------------------------------------------------------------------------
 
 export async function getLetter(slug: string): Promise<LetterFull | null> {
-  const letter = await prisma.letter.findUnique({ where: { slug } });
+  const letter = await bff<BffLetterFull>(`/letters/${slug}`, {
+    tags: ["letters"],
+  });
   if (!letter) return null;
-
-  return {
-    slug: letter.slug,
-    recipients: letter.recipients,
-    recipientDisplay: letter.recipientDisplay,
-    date: letter.date,
-    dateRef: letter.dateRef,
-    year: letter.year,
-    month: letter.month,
-    day: letter.day,
-    location: letter.location,
-    salutation: letter.salutation,
-    paragraphs: letter.paragraphs.map(sanitizeHtml),
-  };
+  return mapLetterFull(letter);
 }
 
-// --- Navigation helpers ---
+// ---------------------------------------------------------------------------
+// Navigation helpers
+// ---------------------------------------------------------------------------
 
 export async function getAdjacentLetters(
   slug: string,
@@ -223,27 +246,18 @@ export async function getAdjacentLetters(
 ): Promise<{ prev: LetterSummary | null; next: LetterSummary | null }> {
   if (!year) return { prev: null, next: null };
 
-  const yearLetters = await prisma.letter.findMany({
-    where: { year },
-    orderBy: [{ month: "asc" }, { day: "asc" }, { slug: "asc" }],
-    select: {
-      slug: true,
-      recipients: true,
-      recipientDisplay: true,
-      date: true,
-      year: true,
-      month: true,
-      location: true,
-    },
-  });
+  const letters = await getLettersByYear(year);
+  const idx = letters.findIndex((l) => l.slug === slug);
 
-  const idx = yearLetters.findIndex((l) => l.slug === slug);
   return {
-    prev: idx > 0 ? yearLetters[idx - 1] : null,
-    next: idx < yearLetters.length - 1 ? yearLetters[idx + 1] : null,
+    prev: idx > 0 ? letters[idx - 1] : null,
+    next: idx < letters.length - 1 ? letters[idx + 1] : null,
   };
 }
 
 export async function getTotalLetterCount(): Promise<number> {
-  return prisma.letter.count();
+  const result = await bff<{ count: number }>("/letters", {
+    tags: ["letters"],
+  });
+  return result?.count ?? 0;
 }
diff --git a/lib/lob.ts b/lib/lob.ts
index 9c453d8c..6114582a 100644
--- a/lib/lob.ts
+++ b/lib/lob.ts
@@ -1,429 +1,45 @@
 /**
- * Data access layer for Light of the Bhāgavata (LoB).
+ * Data access layer for Light of the Bhāgavata (LOB).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * LoB is a prose book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * It has 48 "texts" (numbered chapters) plus 4 intro segments
- * (front-pages, preface, acknowledgement, the-artist).
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/lob/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "lob";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type LobMeta = BookMeta;
+export type LobChapterEntry = { number: number; title: string };
+export type LobIntroSegment = IntroSegment;
+export type LobChapter = Chapter;
+export type LobSidebarItem = SidebarItem;
 
-const BOOK = "lob";
-
-const LOB_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "lob");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type LobMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: LobChapterEntry[];
-};
-
-export type LobChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type LobIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type LobChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type LobSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "48", etc. */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getLobMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getLobIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getLobIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): LobIntroSegment[] {
-  const introDir = path.join(LOB_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: LobIntroSegment[] = [];
-  const files = [
-    "front-pages.json",
-    "preface.json",
-    "acknowledgement.json",
-    "the-artist.json",
-  ];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<LobIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getLobChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): LobIntroSegment | null {
-  const filePath = path.join(LOB_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<LobIntroSegment>(filePath);
+export async function getLobContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): LobChapter | null {
-  const filePath = path.join(
-    LOB_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<LobChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getLobMeta(): Promise<LobMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as LobMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(LOB_JSON_DIR, "intro.json");
-  return readLocalJson<LobMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getLobIntroSegments(): Promise<LobIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getLobIntroSegment(
-  slug: string,
-): Promise<LobIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters (Texts 1–48)
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered text/chapter (1–48).
- */
-export async function getLobChapter(
-  chapterNum: number,
-): Promise<LobChapter | null> {
-  if (chapterNum < 1 || chapterNum > 48 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"        → intro segment
- *   "intro-preface"            → intro segment
- *   "intro-acknowledgement"    → intro segment
- *   "intro-the-artist"         → intro segment
- *   "1" … "48"                 → chapter (text)
- */
-export async function getLobContent(
-  slug: string,
-): Promise<LobChapter | LobIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getLobIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 48) {
-    return getLobChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → preface → acknowledgement → the-artist → texts 1–48
- */
-export async function getLobSidebarItems(): Promise<LobSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getLobMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: LobMeta,
-  allDocs: { slug: string; title: string; type: string; chapter: number | null; order: number | null }[],
-): LobSidebarItem[] {
-  const items: LobSidebarItem[] = [];
-
-  // Intro segments (all come before chapters; LoB has no back matter)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Texts 1–48 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Text ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: LobMeta | null): LobSidebarItem[] {
-  const items: LobSidebarItem[] = [];
-
-  // Local intro segments (front matter only — LoB has no back matter)
-  const introSegs = getLocalIntroSegments();
-  for (const seg of introSegs) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Texts from meta or generate default 1-48
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Text ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(LOB_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<LobChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Text ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  return items;
+export async function getLobSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/magazines.ts b/lib/magazines.ts
index ccafbe6f..62894d5f 100644
--- a/lib/magazines.ts
+++ b/lib/magazines.ts
@@ -1,13 +1,11 @@
 /**
  * Data access layer for Magazines (Back to Godhead, etc.).
  *
- * Uses dedicated Prisma models:
- *   - MagazineMeta (collection: magazine_meta)
- *   - MagazineIssue (collection: magazine_issues)
+ * Uses the BFF API instead of direct Prisma queries.
+ * Falls back to local JSON files when BFF is unavailable.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import { bff, bffList } from "@/lib/bff";
 import fs from "fs";
 import path from "path";
 
@@ -57,6 +55,35 @@ export type MagazineSidebarItem = {
   type: string;
 };
 
+// --- BFF response types ---
+
+type BffMagazineMeta = {
+  id: string;
+  book: string;
+  data: {
+    title: string;
+    author: string;
+    year: number | null;
+    description: string | null;
+    totalIssues: number;
+    totalArticles: number;
+    flag: string | null;
+    chapters: MagazineChapterEntry[];
+  };
+};
+
+type BffMagazineIssue = {
+  book: string;
+  volume: number | null;
+  part: number;
+  title: string;
+  slug: string;
+  paragraphs: string[];
+  paragraphs_json?: string;
+};
+
+// --- HTML sanitisation ---
+
 function sanitizeHtml(html: string): string {
   let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
   clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
@@ -71,7 +98,7 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
+function normalizeParagraphs(paragraphs: string[] | unknown): string[] {
   let result: string[];
   if (typeof paragraphs === "string") {
     try {
@@ -88,6 +115,57 @@ function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
   return result.map(sanitizeHtml);
 }
 
+// --- BFF → domain mappers ---
+
+function mapBffMetaToMagazineMetaData(raw: BffMagazineMeta): MagazineMetaData {
+  return {
+    book: raw.book,
+    title: raw.data.title,
+    author: raw.data.author,
+    year: raw.data.year ?? null,
+    description: raw.data.description ?? null,
+    totalIssues: raw.data.totalIssues,
+    totalArticles: raw.data.totalArticles,
+    flag: raw.data.flag ?? null,
+    chapters: raw.data.chapters,
+  };
+}
+
+function mapBffMetaToSummary(raw: BffMagazineMeta): MagazineSummary {
+  return {
+    book: raw.book,
+    title: raw.data.title,
+    author: raw.data.author,
+    year: raw.data.year ?? null,
+    description: raw.data.description ?? null,
+    totalIssues: raw.data.totalIssues,
+    flag: raw.data.flag ?? null,
+  };
+}
+
+function mapBffIssue(raw: BffMagazineIssue): MagazineIssueData {
+  // Handle paragraphs_json fallback
+  let paragraphs = raw.paragraphs;
+  if ((!paragraphs || !paragraphs.length) && raw.paragraphs_json) {
+    try {
+      paragraphs = JSON.parse(raw.paragraphs_json);
+    } catch {
+      paragraphs = [];
+    }
+  }
+
+  return {
+    book: raw.book,
+    volume: raw.volume,
+    part: raw.part,
+    title: raw.title,
+    slug: raw.slug,
+    paragraphs: normalizeParagraphs(paragraphs),
+  };
+}
+
+// --- Local JSON fallback helpers ---
+
 function findLocalDirForBook(bookCode: string): string | null {
   if (!fs.existsSync(LOCAL_JSON_DIR)) return null;
   const entries = fs.readdirSync(LOCAL_JSON_DIR);
@@ -152,22 +230,9 @@ function getLocalIssue(
 
 export async function getAllMagazines(): Promise<MagazineSummary[]> {
   try {
-    const results = await prisma.magazineMeta.findMany({
-      orderBy: { book: "asc" },
-    });
+    const results = await bffList<BffMagazineMeta>("/magazines");
     if (results.length > 0) {
-      return results.map((row) => {
-        const data = row.data as unknown as MagazineMetaData;
-        return {
-          book: row.book,
-          title: data.title,
-          author: data.author,
-          year: data.year ?? null,
-          description: data.description ?? null,
-          totalIssues: data.totalIssues,
-          flag: data.flag ?? null,
-        };
-      });
+      return results.map(mapBffMetaToSummary);
     }
   } catch {
     /* fall through */
@@ -188,10 +253,8 @@ export async function getMagazineMeta(
   bookCode: string,
 ): Promise<MagazineMetaData | null> {
   try {
-    const row = await prisma.magazineMeta.findUnique({
-      where: { book: bookCode },
-    });
-    if (row) return row.data as unknown as MagazineMetaData;
+    const raw = await bff<BffMagazineMeta>(`/magazines/${bookCode}`);
+    if (raw) return mapBffMetaToMagazineMetaData(raw);
   } catch {
     /* fall through */
   }
@@ -204,19 +267,10 @@ export async function getMagazineIssue(
 ): Promise<MagazineIssueData | null> {
   if (!slug) return null;
   try {
-    const doc = await prisma.magazineIssue.findUnique({
-      where: { book_slug: { book: bookCode, slug } },
-    });
-    if (doc) {
-      return {
-        book: doc.book,
-        volume: doc.volume,
-        part: doc.part,
-        title: doc.title,
-        slug: doc.slug,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      };
-    }
+    const raw = await bff<BffMagazineIssue>(
+      `/magazines/${bookCode}/issues/${slug}`,
+    );
+    if (raw) return mapBffIssue(raw);
   } catch {
     /* fall through */
   }
diff --git a/lib/mg.ts b/lib/mg.ts
index 6ce614eb..5b59fb30 100644
--- a/lib/mg.ts
+++ b/lib/mg.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for Kṛṣṇa Consciousness: The Matchless Gift (MG).
  *
- * Reads from MongoDB via Prisma.
- * MG is a simple prose book with 1 intro segment (front-pages) and 7 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "mg";
 
-const BOOK = "mg";
+// Re-export types with book-specific names for backwards compatibility
+export type MgMeta = BookMeta;
+export type MgChapterEntry = { number: number; title: string };
+export type MgIntroSegment = IntroSegment;
+export type MgChapter = Chapter;
+export type MgSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type MgMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: MgChapterEntry[];
-};
-
-export type MgChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type MgIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type MgChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type MgSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "7" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getMgMeta(): Promise<MgMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as MgMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getMgIntroSegments(): Promise<MgIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getMgIntroSegment(
   slug: string,
 ): Promise<MgIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–7).
- */
 export async function getMgChapter(
   chapterNum: number,
 ): Promise<MgChapter | null> {
-  if (chapterNum < 1 || chapterNum > 7 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "7"            → chapter
- */
 export async function getMgContent(
   slug: string,
 ): Promise<MgChapter | MgIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getMgIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 7) {
-    return getMgChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–7
- */
 export async function getMgSidebarItems(): Promise<MgSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getMgMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: MgSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–7 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/mog.ts b/lib/mog.ts
index 6b35631f..4e206510 100644
--- a/lib/mog.ts
+++ b/lib/mog.ts
@@ -1,430 +1,45 @@
 /**
  * Data access layer for Message of Godhead (MOG).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * MOG is a prose book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/mog/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "mog";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type MogMeta = BookMeta;
+export type MogChapterEntry = { number: number; title: string };
+export type MogIntroSegment = IntroSegment;
+export type MogChapter = Chapter;
+export type MogSidebarItem = SidebarItem;
 
-const BOOK = "mog";
-
-const MOG_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "mog");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type MogMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: MogChapterEntry[];
-};
-
-export type MogChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type MogIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type MogChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type MogSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", "3" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getMogMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getMogIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getMogIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): MogIntroSegment[] {
-  const introDir = path.join(MOG_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: MogIntroSegment[] = [];
-  const files = ["front-pages.json"];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<MogIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getMogChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): MogIntroSegment | null {
-  const filePath = path.join(MOG_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<MogIntroSegment>(filePath);
+export async function getMogContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): MogChapter | null {
-  const filePath = path.join(
-    MOG_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<MogChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getMogMeta(): Promise<MogMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as MogMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(MOG_JSON_DIR, "intro.json");
-  return readLocalJson<MogMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getMogIntroSegments(): Promise<MogIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getMogIntroSegment(
-  slug: string,
-): Promise<MogIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–3).
- */
-export async function getMogChapter(
-  chapterNum: number,
-): Promise<MogChapter | null> {
-  if (chapterNum < 1 || chapterNum > 3 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "3"            → chapter
- */
-export async function getMogContent(
-  slug: string,
-): Promise<MogChapter | MogIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getMogIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 3) {
-    return getMogChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–3
- */
-export async function getMogSidebarItems(): Promise<MogSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getMogMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: MogMeta,
-  allDocs: {
-    slug: string;
-    title: string;
-    type: string;
-    chapter: number | null;
-    order: number | null;
-  }[],
-): MogSidebarItem[] {
-  const items: MogSidebarItem[] = [];
-
-  // Intro segments (front-pages)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–3 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: MogMeta | null): MogSidebarItem[] {
-  const items: MogSidebarItem[] = [];
-
-  // Local intro segments (front matter)
-  const introSegs = getLocalIntroSegments();
-  for (const seg of introSegs) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Chapters from meta or scan local chapter JSONs
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `${ch.number}. ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(MOG_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<MogChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `${num}. ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  return items;
+export async function getMogSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/nod.ts b/lib/nod.ts
index 184490f0..6eefa0f4 100644
--- a/lib/nod.ts
+++ b/lib/nod.ts
@@ -1,332 +1,49 @@
 /**
  * Data access layer for The Nectar of Devotion (NOD).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * NoD is a prose book (like KB) but has no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "nod";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type NodMeta = BookMeta;
+export type NodChapterEntry = { number: number; title: string };
+export type NodIntroSegment = IntroSegment;
+export type NodChapter = Chapter;
+export type NodSidebarItem = SidebarItem;
 
-const BOOK = "nod";
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type NodMeta = {
-  book: string;
-  title: string;
-  subtitle: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  parts: NodPart[];
-  chapters: NodChapterEntry[];
-};
-
-export type NodPart = {
-  number: number;
-  title: string;
-  chapters: number[];
-};
-
-export type NodChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type NodIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type NodChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type NodSidebarItem = {
-  /** URL-safe slug: "intro-front-flap", "1", "51", "concluding-words" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" | "conclusion" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getNodMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getNodIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, parts, chapter list, etc.)
- */
-export async function getNodMeta(): Promise<NodMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as NodMeta;
+export async function getNodIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getNodIntroSegments(): Promise<NodIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getNodChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-preface" (URL slug) and "preface" (raw slug).
- */
-export async function getNodIntroSegment(
-  slug: string,
-): Promise<NodIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+// NodConcludingWords is just a chapter with slug "concluding-words"
+export async function getNodConcludingWords() {
+  return getChapter(CODE, "concluding-words");
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–51).
- */
-export async function getNodChapter(
-  chapterNum: number,
-): Promise<NodChapter | null> {
-  if (chapterNum < 1 || chapterNum > 51 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getNodContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-/**
- * The concluding words section.
- */
-export async function getNodConcludingWords(): Promise<NodChapter | null> {
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: "concluding-words",
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-flap"    → intro segment
- *   "intro-preface"       → intro segment
- *   "intro-introduction"  → intro segment
- *   "1" … "51"            → chapter
- *   "concluding-words"    → concluding section
- */
-export async function getNodContent(
-  slug: string,
-): Promise<NodChapter | NodIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getNodIntroSegment(slug);
-  }
-
-  if (slug === "concluding-words") {
-    return getNodConcludingWords();
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 51) {
-    return getNodChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: intro segments → chapters 1–51 → concluding words
- */
-export async function getNodSidebarItems(): Promise<NodSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getNodMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: NodSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–51 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Concluding words
-  const cw = allDocs.find((d) => d.type === "conclusion");
-  if (cw) {
-    items.push({
-      slug: cw.slug,
-      label: cw.title,
-      type: "conclusion",
-      chapter: null,
-    });
-  }
-
-  return items;
+export async function getNodSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/noi.ts b/lib/noi.ts
index da009f7d..b2119b12 100644
--- a/lib/noi.ts
+++ b/lib/noi.ts
@@ -1,322 +1,89 @@
 /**
  * Data access layer for The Nectar of Instruction (NoI).
  *
- * Reads from MongoDB via Prisma.
- * NoI has 11 texts (verses) plus intro segments (front-pages, preface, appendixes).
+ * Delegates to the generic book data layer (BFF API) for prose intro segments,
+ * and to lib/api.ts for verse (text) lookups.
  *
- * Verses were seeded with:
- *   - book: "noi", division: null
- *   - chapter = text number (1-11)
- *   - verse = always 1
- *
- * Intro segments were seeded with:
- *   - book: "noi", volume: 0, type: "intro-segment"
- *   - slugs like "intro-front-pages", "intro-preface", "intro-appendixes"
+ * NoI has 11 texts (verses) plus intro segments.
+ * Verses are stored with: book "noi", division null, chapter = text number, verse = 1.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
+import { getSingleVerse, type VerseRecord } from "@/lib/api";
+
+const CODE = "noi";
 
 // ---------------------------------------------------------------------------
-// Constants
+// Re-export types with book-specific names for backwards compatibility
 // ---------------------------------------------------------------------------
 
-const BOOK = "noi";
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Text title lookup
-// ---------------------------------------------------------------------------
-
-const TEXT_TITLES: Record<number, string> = {
-  1: "Text One",
-  2: "Text Two",
-  3: "Text Three",
-  4: "Text Four",
-  5: "Text Five",
-  6: "Text Six",
-  7: "Text Seven",
-  8: "Text Eight",
-  9: "Text Nine",
-  10: "Text Ten",
-  11: "Text Eleven",
-};
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type NoiMeta = {
-  book: string;
-  title: string;
-  subtitle: string;
-  author: string;
-  year: number;
-  description: string;
-  totalTexts: number;
-  texts: NoiTextEntry[];
-};
-
-export type NoiTextEntry = {
-  number: number;
-  title: string;
-  slug: string;
-};
-
-export type NoiIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type NoiVerse = {
-  book: string;
-  book_title: string;
-  text: number;
-  title: string;
-  reference: string;
-  devanagari: string;
-  transliteration: string;
-  synonyms: { word: string; meanings: string[] }[];
-  translation: string;
-  purport: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type NoiSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "intro-preface", "1", etc. */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "verse" */
-  type: string;
-  /** Text number (1-11), or null for non-verse items */
-  text: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/iso.ts, lib/nod.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-/** Normalize purport via normalizeParagraphs. */
-function normalizePurport(purport: string[] | JsonValue): string[] {
-  return normalizeParagraphs(purport);
-}
+export type NoiMeta = BookMeta;
+export type NoiIntroSegment = IntroSegment;
+export type NoiChapter = Chapter;
+export type NoiSidebarItem = SidebarItem;
+export type NoiVerse = VerseRecord;
 
 // ---------------------------------------------------------------------------
 // Book meta
 // ---------------------------------------------------------------------------
 
-/**
- * Book-level metadata (title, author, texts list, etc.)
- */
-export async function getNoiMeta(): Promise<NoiMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as NoiMeta;
+export async function getNoiMeta() {
+  return getBookMeta(CODE);
 }
 
 // ---------------------------------------------------------------------------
-// Intro segments (from prose_chapters collection)
+// Intro segments
 // ---------------------------------------------------------------------------
 
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getNoiIntroSegments(): Promise<NoiIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getNoiIntroSegments() {
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getNoiIntroSegment(
-  slug: string,
-): Promise<NoiIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getNoiIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
 
 // ---------------------------------------------------------------------------
-// Verses (texts 1-11, from verses collection)
+// Verses (texts 1-11, from verses collection via BFF)
 // ---------------------------------------------------------------------------
 
-/**
- * A single verse/text by slug.
- *
- * - "1"-"11" → chapter=1–11, verse=1
- */
 export async function getNoiVerse(slug: string): Promise<NoiVerse | null> {
-  const textNum = Number(slug);
-  if (!Number.isInteger(textNum) || textNum < 1 || textNum > 11) return null;
-
-  const doc = await prisma.verse.findFirst({
-    where: { book: BOOK, division: null, chapter: textNum, verse: 1 },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    book_title: doc.bookTitle,
-    text: doc.chapter, // chapter field stores the text number
-    title: TEXT_TITLES[doc.chapter] ?? `Text ${doc.chapter}`,
-    reference: doc.reference,
-    devanagari: doc.devanagari,
-    transliteration: doc.transliteration,
-    synonyms: doc.synonyms as { word: string; meanings: string[] }[],
-    translation: sanitizeHtml(doc.translation),
-    purport: normalizePurport(doc.purport),
-  };
+  const num = parseInt(slug, 10);
+  if (isNaN(num)) return null;
+  return getSingleVerse(CODE, null, num, 1);
 }
 
 // ---------------------------------------------------------------------------
 // Unified content accessor
 // ---------------------------------------------------------------------------
 
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"    → intro segment
- *   "intro-preface"        → intro segment
- *   "intro-appendixes"     → intro segment
- *   "1" … "11"             → verse/text
- */
 export async function getNoiContent(
   slug: string,
-): Promise<NoiVerse | NoiIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getNoiIntroSegment(slug);
+): Promise<NoiVerse | NoiIntroSegment | NoiChapter | null> {
+  // Try as verse first (numeric slug)
+  if (/^\d+$/.test(slug)) {
+    const verse = await getNoiVerse(slug);
+    if (verse) return verse;
   }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 11) {
-    return getNoiVerse(String(num));
-  }
-
-  return null;
+  // Fall back to prose content (intro segments, etc.)
+  return getContent(CODE, slug);
 }
 
 // ---------------------------------------------------------------------------
 // Sidebar navigation
 // ---------------------------------------------------------------------------
 
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → preface → texts 1-11 → appendixes
- */
-export async function getNoiSidebarItems(): Promise<NoiSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getNoiMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: NoiSidebarItem[] = [];
-
-  // 1. Intro segments that come before the texts (front-pages, preface — by order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && doc.slug !== "intro-appendixes") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        text: null,
-      });
-    }
-  }
-
-  // 2. Texts 1-11 (from meta.texts)
-  for (const t of meta.texts) {
-    items.push({
-      slug: String(t.number),
-      label: `${t.number}. ${t.title}`,
-      type: "verse",
-      text: t.number,
-    });
-  }
-
-  // 3. Appendixes intro segment (at the end)
-  const appendixes = allDocs.find((d) => d.slug === "intro-appendixes");
-  if (appendixes) {
-    items.push({
-      slug: appendixes.slug,
-      label: appendixes.title,
-      type: "intro-segment",
-      text: null,
-    });
-  }
-
-  return items;
+export async function getNoiSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/ochkm.ts b/lib/ochkm.ts
index 8a455965..45b59a84 100644
--- a/lib/ochkm.ts
+++ b/lib/ochkm.ts
@@ -1,280 +1,57 @@
 /**
- * Data access layer for On Chanting the Hare Kṛṣṇa Mantra (OCHKM).
+ * Data access layer for On Chanting Hare Kṛṣṇa (OCHKM).
  *
- * Reads from MongoDB via Prisma.
- * OCHKM is a prose book with 1 intro segment (front-pages) and 4 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ochkm";
 
-const BOOK = "ochkm";
+// Re-export types with book-specific names for backwards compatibility
+export type OchkmMeta = BookMeta;
+export type OchkmChapterEntry = { number: number; title: string };
+export type OchkmIntroSegment = IntroSegment;
+export type OchkmChapter = Chapter;
+export type OchkmSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type OchkmMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: OchkmChapterEntry[];
-};
-
-export type OchkmChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type OchkmIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type OchkmChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type OchkmSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "4" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getOchkmMeta(): Promise<OchkmMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as OchkmMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getOchkmIntroSegments(): Promise<OchkmIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getOchkmIntroSegment(
   slug: string,
 ): Promise<OchkmIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–4).
- */
 export async function getOchkmChapter(
   chapterNum: number,
 ): Promise<OchkmChapter | null> {
-  if (chapterNum < 1 || chapterNum > 4 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "4"            → chapter
- */
 export async function getOchkmContent(
   slug: string,
 ): Promise<OchkmChapter | OchkmIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getOchkmIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 4) {
-    return getOchkmChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–4
- */
 export async function getOchkmSidebarItems(): Promise<OchkmSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getOchkmMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: OchkmSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–4 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/other-documents.ts b/lib/other-documents.ts
index 9b37f56b..6d228eaf 100644
--- a/lib/other-documents.ts
+++ b/lib/other-documents.ts
@@ -1,18 +1,14 @@
 /**
  * Data access layer for Other Documents.
  *
- * Uses dedicated Prisma models:
- *   - OtherDocumentMeta (collection: other_document_meta)
- *   - OtherDocumentChapter (collection: other_document_chapters)
- *
+ * Calls the BFF API for all data access (no direct Prisma usage).
  * Falls back to reading local JSON files from
- * lib/jsons/other-documents/<slug>/ when the database is unavailable.
+ * lib/jsons/other-documents/<slug>/ when the BFF is unavailable.
  *
  * Book codes are plain slugs (e.g. "analysis-bg", "real-peace-formula").
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import { bff, bffList } from "@/lib/bff";
 import fs from "fs";
 import path from "path";
 
@@ -72,6 +68,33 @@ export type OtherDocumentSidebarItem = {
   chapter: number;
 };
 
+// ---------------------------------------------------------------------------
+// BFF response types (snake_case from Go)
+// ---------------------------------------------------------------------------
+
+type BffDocumentMeta = {
+  id: string;
+  book: string;
+  data: {
+    title: string;
+    author: string;
+    year?: number | null;
+    description?: string | null;
+    totalChapters: number;
+    chapters: { number: number; title: string }[];
+  };
+};
+
+type BffChapter = {
+  id: string;
+  book: string;
+  chapter: number;
+  title: string;
+  type: string;
+  slug: string;
+  paragraphs: string[];
+};
+
 // ---------------------------------------------------------------------------
 // HTML sanitisation (same pattern used across all readers)
 // ---------------------------------------------------------------------------
@@ -90,23 +113,52 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
+// ---------------------------------------------------------------------------
+// Mappers (BFF response → frontend types)
+// ---------------------------------------------------------------------------
 
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
+function mapMetaData(raw: BffDocumentMeta): OtherDocumentMetaData {
+  const data =
+    raw.data && typeof raw.data === "object"
+      ? raw.data
+      : ({} as BffDocumentMeta["data"]);
+  return {
+    book: raw.book,
+    title: data.title ?? "",
+    author: data.author ?? "",
+    year: data.year ?? null,
+    description: data.description ?? null,
+    totalChapters: data.totalChapters ?? 0,
+    chapters: (data.chapters ?? []).map((ch) => ({
+      number: ch.number,
+      title: ch.title,
+    })),
+  };
+}
 
-  return result.map(sanitizeHtml);
+function mapSummary(raw: BffDocumentMeta): OtherDocumentSummary {
+  const data =
+    raw.data && typeof raw.data === "object"
+      ? raw.data
+      : ({} as BffDocumentMeta["data"]);
+  return {
+    book: raw.book,
+    title: data.title ?? "",
+    author: data.author ?? "",
+    year: data.year ?? null,
+    description: data.description ?? null,
+    totalChapters: data.totalChapters ?? 0,
+  };
+}
+
+function mapChapter(raw: BffChapter): OtherDocumentChapterData {
+  return {
+    book: raw.book,
+    chapter: raw.chapter,
+    title: raw.title,
+    type: raw.type,
+    paragraphs: (raw.paragraphs ?? []).map(sanitizeHtml),
+  };
 }
 
 // ---------------------------------------------------------------------------
@@ -195,22 +247,12 @@ function getLocalChapter(
  */
 export async function getAllOtherDocuments(): Promise<OtherDocumentSummary[]> {
   try {
-    const results = await prisma.otherDocumentMeta.findMany({
-      orderBy: { book: "asc" },
+    const results = await bffList<BffDocumentMeta>("/other-documents", {
+      tags: ["other-documents"],
     });
 
     if (results.length > 0) {
-      return results.map((row) => {
-        const data = row.data as unknown as OtherDocumentMetaData;
-        return {
-          book: row.book,
-          title: data.title,
-          author: data.author,
-          year: data.year ?? null,
-          description: data.description ?? null,
-          totalChapters: data.totalChapters,
-        };
-      });
+      return results.map(mapSummary);
     }
   } catch {
     // fall through to local JSON
@@ -234,12 +276,12 @@ export async function getOtherDocumentMeta(
   bookCode: string,
 ): Promise<OtherDocumentMetaData | null> {
   try {
-    const row = await prisma.otherDocumentMeta.findUnique({
-      where: { book: bookCode },
+    const raw = await bff<BffDocumentMeta>(`/other-documents/${bookCode}`, {
+      tags: [`other-doc-${bookCode}`],
     });
 
-    if (row) {
-      return row.data as unknown as OtherDocumentMetaData;
+    if (raw) {
+      return mapMetaData(raw);
     }
   } catch {
     // fall through to local JSON
@@ -258,23 +300,13 @@ export async function getOtherDocumentChapter(
   if (chapterNum < 1 || !Number.isInteger(chapterNum)) return null;
 
   try {
-    const doc = await prisma.otherDocumentChapter.findUnique({
-      where: {
-        book_slug: {
-          book: bookCode,
-          slug: String(chapterNum),
-        },
-      },
-    });
+    const raw = await bff<BffChapter>(
+      `/other-documents/${bookCode}/chapters/${chapterNum}`,
+      { tags: [`other-doc-${bookCode}`] },
+    );
 
-    if (doc) {
-      return {
-        book: doc.book,
-        chapter: doc.chapter,
-        title: doc.title,
-        type: doc.type,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      };
+    if (raw) {
+      return mapChapter(raw);
     }
   } catch {
     // fall through to local JSON
diff --git a/lib/owk.ts b/lib/owk.ts
index 40344e34..d062b0db 100644
--- a/lib/owk.ts
+++ b/lib/owk.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for On the Way to Kṛṣṇa (OWK).
  *
- * Reads from MongoDB via Prisma.
- * OWK is a simple prose book with 1 intro segment (front-pages) and 5 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "owk";
 
-const BOOK = "owk";
+// Re-export types with book-specific names for backwards compatibility
+export type OwkMeta = BookMeta;
+export type OwkChapterEntry = { number: number; title: string };
+export type OwkIntroSegment = IntroSegment;
+export type OwkChapter = Chapter;
+export type OwkSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type OwkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: OwkChapterEntry[];
-};
-
-export type OwkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type OwkIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type OwkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type OwkSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "5" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getOwkMeta(): Promise<OwkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as OwkMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getOwkIntroSegments(): Promise<OwkIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getOwkIntroSegment(
   slug: string,
 ): Promise<OwkIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–5).
- */
 export async function getOwkChapter(
   chapterNum: number,
 ): Promise<OwkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 5 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "5"            → chapter
- */
 export async function getOwkContent(
   slug: string,
 ): Promise<OwkChapter | OwkIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getOwkIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 5) {
-    return getOwkChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–5
- */
 export async function getOwkSidebarItems(): Promise<OwkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getOwkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: OwkSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–5 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/pk.ts b/lib/pk.ts
index ae67b2ab..e7882a1c 100644
--- a/lib/pk.ts
+++ b/lib/pk.ts
@@ -1,306 +1,29 @@
-/**
- * Data access layer for Prayers of King Kulaśekhara (PK).
- *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * PK is a prose book with no volume structure and no intro segments —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/pk/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
- */
+import {
+  getBookMeta,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+const CODE = "pk";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type PkMeta = BookMeta;
+export type PkChapterEntry = { number: number; title: string };
+export type PkChapter = Chapter;
+export type PkSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-const BOOK = "pk";
-
-const PK_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "pk");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type PkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: PkChapterEntry[];
-};
-
-export type PkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type PkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type PkSidebarItem = {
-  /** URL-safe slug: "1", "2", … "6" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "chapter" */
-  type: string;
-  /** Chapter number */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getPkMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getPkChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getPkContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): PkChapter | null {
-  const filePath = path.join(
-    PK_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<PkChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getPkMeta(): Promise<PkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as PkMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(PK_JSON_DIR, "intro.json");
-  return readLocalJson<PkMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–6).
- */
-export async function getPkChapter(
-  chapterNum: number,
-): Promise<PkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 6 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "1" … "6" → chapter
- */
-export async function getPkContent(slug: string): Promise<PkChapter | null> {
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 6) {
-    return getPkChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: chapters 1–6 (no intro segments for PK)
- */
-export async function getPkSidebarItems(): Promise<PkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getPkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: PkMeta,
-  _allDocs: {
-    slug: string;
-    title: string;
-    type: string;
-    chapter: number | null;
-    order: number | null;
-  }[],
-): PkSidebarItem[] {
-  const items: PkSidebarItem[] = [];
-
-  // Chapters 1–6 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: PkMeta | null): PkSidebarItem[] {
-  const items: PkSidebarItem[] = [];
-
-  // Chapters from meta or scan local chapter JSONs
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `${ch.number}. ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(PK_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<PkChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `${num}. ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  return items;
+export async function getPkSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/poy.ts b/lib/poy.ts
index 9484001f..6f0c92fe 100644
--- a/lib/poy.ts
+++ b/lib/poy.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for The Perfection of Yoga (POY).
  *
- * Reads from MongoDB via Prisma.
- * POY is a prose book with 1 intro segment (front-pages) and 11 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "poy";
 
-const BOOK = "poy";
+// Re-export types with book-specific names for backwards compatibility
+export type PoyMeta = BookMeta;
+export type PoyChapterEntry = { number: number; title: string };
+export type PoyIntroSegment = IntroSegment;
+export type PoyChapter = Chapter;
+export type PoySidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type PoyMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: PoyChapterEntry[];
-};
-
-export type PoyChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type PoyIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type PoyChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type PoySidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "11" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getPoyMeta(): Promise<PoyMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as PoyMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getPoyIntroSegments(): Promise<PoyIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getPoyIntroSegment(
   slug: string,
 ): Promise<PoyIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–11).
- */
 export async function getPoyChapter(
   chapterNum: number,
 ): Promise<PoyChapter | null> {
-  if (chapterNum < 1 || chapterNum > 11 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "11"           → chapter
- */
 export async function getPoyContent(
   slug: string,
 ): Promise<PoyChapter | PoyIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getPoyIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 11) {
-    return getPoyChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–11
- */
 export async function getPoySidebarItems(): Promise<PoySidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getPoyMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: PoySidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–11 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/pqpa.ts b/lib/pqpa.ts
index 9e3174b3..77f6808d 100644
--- a/lib/pqpa.ts
+++ b/lib/pqpa.ts
@@ -1,336 +1,49 @@
 /**
- * Data access layer for Perfect Questions Perfect Answers (PQPA).
+ * Data access layer for Perfect Questions, Perfect Answers (PQPA).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * PQPA is a prose/dialogue book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "pqpa";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type PqpaMeta = BookMeta;
+export type PqpaChapterEntry = { number: number; title: string };
+export type PqpaIntroSegment = IntroSegment;
+export type PqpaChapter = Chapter;
+export type PqpaSidebarItem = SidebarItem;
 
-const BOOK = "pqpa";
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type PqpaMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: PqpaChapterEntry[];
-};
-
-export type PqpaChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type PqpaIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type PqpaChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type PqpaSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "9", "concluding-words" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" | "conclusion" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getPqpaMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getPqpaIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getPqpaMeta(): Promise<PqpaMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as PqpaMeta;
+export async function getPqpaIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getPqpaIntroSegments(): Promise<PqpaIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getPqpaChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-introduction" (URL slug) and "introduction" (raw slug).
- */
-export async function getPqpaIntroSegment(
-  slug: string,
-): Promise<PqpaIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+// PqpaConcludingWords is just a chapter with slug "concluding-words"
+export async function getPqpaConcludingWords() {
+  return getChapter(CODE, "concluding-words");
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–9).
- */
-export async function getPqpaChapter(
-  chapterNum: number,
-): Promise<PqpaChapter | null> {
-  if (chapterNum < 1 || chapterNum > 9 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getPqpaContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-/**
- * The concluding words section.
- */
-export async function getPqpaConcludingWords(): Promise<PqpaChapter | null> {
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: "concluding-words",
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"       → intro segment
- *   "intro-introduction"      → intro segment
- *   "intro-about-the-author"  → intro segment
- *   "1" … "9"                 → chapter
- *   "concluding-words"        → concluding section
- */
-export async function getPqpaContent(
-  slug: string,
-): Promise<PqpaChapter | PqpaIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getPqpaIntroSegment(slug);
-  }
-
-  if (slug === "concluding-words") {
-    return getPqpaConcludingWords();
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 9) {
-    return getPqpaChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → introduction → chapters 1–9 → concluding-words → about-the-author
- */
-export async function getPqpaSidebarItems(): Promise<PqpaSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getPqpaMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: PqpaSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) < 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–9 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Concluding words
-  const cw = allDocs.find((d) => d.type === "conclusion");
-  if (cw) {
-    items.push({
-      slug: cw.slug,
-      label: cw.title,
-      type: "conclusion",
-      chapter: null,
-    });
-  }
-
-  // Intro segments that come AFTER chapters (order >= 99, e.g. about-the-author)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) >= 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  return items;
+export async function getPqpaSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/rv.ts b/lib/rv.ts
index 8b929647..9bd49361 100644
--- a/lib/rv.ts
+++ b/lib/rv.ts
@@ -1,280 +1,57 @@
 /**
  * Data access layer for Rāja-vidyā: The King of Knowledge (RV).
  *
- * Reads from MongoDB via Prisma.
- * RV is a simple prose book with 1 intro segment (front-pages) and 8 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "rv";
 
-const BOOK = "rv";
+// Re-export types with book-specific names for backwards compatibility
+export type RvMeta = BookMeta;
+export type RvChapterEntry = { number: number; title: string };
+export type RvIntroSegment = IntroSegment;
+export type RvChapter = Chapter;
+export type RvSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type RvMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: RvChapterEntry[];
-};
-
-export type RvChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type RvIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type RvChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type RvSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "8" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
-}
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
 export async function getRvMeta(): Promise<RvMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as RvMeta;
+  return getBookMeta(CODE);
 }
 
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
 export async function getRvIntroSegments(): Promise<RvIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  return getIntroSegments(CODE);
 }
 
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
 export async function getRvIntroSegment(
   slug: string,
 ): Promise<RvIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getIntroSegment(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–8).
- */
 export async function getRvChapter(
   chapterNum: number,
 ): Promise<RvChapter | null> {
-  if (chapterNum < 1 || chapterNum > 8 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+  return getChapter(CODE, String(chapterNum));
 }
 
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "8"            → chapter
- */
 export async function getRvContent(
   slug: string,
 ): Promise<RvChapter | RvIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getRvIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 8) {
-    return getRvChapter(num);
-  }
-
-  return null;
+  return getContent(CODE, slug);
 }
 
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–8
- */
 export async function getRvSidebarItems(): Promise<RvSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getRvMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: RvSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–8 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+  return getSidebarItems(CODE);
 }
diff --git a/lib/ssr.ts b/lib/ssr.ts
index 28daf52d..c7bfa667 100644
--- a/lib/ssr.ts
+++ b/lib/ssr.ts
@@ -1,336 +1,47 @@
 /**
  * Data access layer for The Science of Self-Realization (SSR).
  *
- * Reads from MongoDB via Prisma.
- * SSR is a large prose book with 6 intro segments (front-pages, dedication,
- * foreword, introduction, appreciations, about-the-author) and 8 parent
- * chapters, each containing multiple sub-chapters (e.g., "1-1", "1-2", "2-1").
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  getNavigableItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ssr";
 
-const BOOK = "ssr";
+export type SsrMeta = BookMeta;
+export type SsrSubChapterEntry = { slug: string; title: string };
+export type SsrIntroSegment = IntroSegment;
+export type SsrChapter = Chapter;
+export type SsrSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type SsrMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: SsrParentChapter[];
-};
-
-export type SsrParentChapter = {
-  number: number;
-  title: string;
-  subChapters: SsrSubChapterEntry[];
-};
-
-export type SsrSubChapterEntry = {
-  slug: string; // "1-1", "1-2", etc.
-  title: string;
-};
-
-export type SsrIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type SsrChapter = {
-  book: string;
-  chapter: string; // "1-1", "2-1", etc.
-  parentChapter: number;
-  subChapter: number;
-  title: string;
-  parentTitle: string;
-  type: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type SsrSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1-1", "parent-1", "intro-about-the-author" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "parent" | "sub-chapter" */
-  type: string;
-  /** Parent chapter number, or null for intro segments */
-  parentChapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getSsrMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getSsrIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list with sub-chapters, etc.)
- */
-export async function getSsrMeta(): Promise<SsrMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as SsrMeta;
+export async function getSsrIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getSsrIntroSegments(): Promise<SsrIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getSsrChapter(slug: string) {
+  return getChapter(CODE, slug);
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getSsrIntroSegment(
-  slug: string,
-): Promise<SsrIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getSsrContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters (sub-chapters like "1-1", "2-3", etc.)
-// ---------------------------------------------------------------------------
-
-/**
- * A sub-chapter by its slug (e.g. "1-1", "2-3").
- */
-export async function getSsrChapter(slug: string): Promise<SsrChapter | null> {
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug,
-      },
-    },
-  });
-  if (!doc) return null;
-
-  // Parse parentChapter and subChapter from slug "X-Y"
-  const parts = slug.split("-");
-  const parentChapter = parseInt(parts[0], 10);
-  const subChapter = parseInt(parts[1], 10);
-
-  // Derive parentTitle from meta if available
-  const meta = await getSsrMeta();
-  const parentEntry = meta?.chapters.find((ch) => ch.number === parentChapter);
-  const parentTitle = parentEntry?.title ?? "";
-
-  return {
-    book: doc.book,
-    chapter: slug,
-    parentChapter,
-    subChapter,
-    title: doc.title,
-    parentTitle,
-    type: doc.type,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"      → intro segment
- *   "intro-dedication"       → intro segment
- *   "intro-about-the-author" → intro segment
- *   "1-1", "2-3", etc.       → sub-chapter
- */
-export async function getSsrContent(
-  slug: string,
-): Promise<SsrChapter | SsrIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getSsrIntroSegment(slug);
-  }
-
-  // Sub-chapter slug like "1-1", "2-3"
-  return getSsrChapter(slug);
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list with hierarchical structure.
- *
- * Order: front-pages → dedication → foreword → introduction → appreciations
- *        → parent-1 (label) → 1-1, 1-2, ... → parent-2 (label) → 2-1, 2-2, ...
- *        → about-the-author
- *
- * "parent" type items are non-clickable headings. Only "intro-segment" and
- * "sub-chapter" items are navigable pages.
- */
-export async function getSsrSidebarItems(): Promise<SsrSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getSsrMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: SsrSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && doc.order < 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        parentChapter: null,
-      });
-    }
-  }
-
-  // Chapters — grouped by parent chapter with sub-chapters
-  for (const ch of meta.chapters) {
-    // Parent heading (non-clickable label)
-    items.push({
-      slug: `parent-${ch.number}`,
-      label: `${ch.number}. ${ch.title}`,
-      type: "parent",
-      parentChapter: ch.number,
-    });
-
-    // Sub-chapters under this parent
-    for (const sub of ch.subChapters) {
-      items.push({
-        slug: sub.slug,
-        label: sub.title,
-        type: "sub-chapter",
-        parentChapter: ch.number,
-      });
-    }
-  }
-
-  // Intro segments that come AFTER chapters (order >= 99, e.g., about-the-author)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && doc.order >= 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        parentChapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-/**
- * Get the flat list of navigable sidebar items (excludes "parent" headings).
- * Used for prev/next navigation.
- */
-export function getNavigableItems(items: SsrSidebarItem[]): SsrSidebarItem[] {
-  return items.filter((item) => item.type !== "parent");
+export async function getSsrSidebarItems() {
+  return getSidebarItems(CODE);
 }
+export { getNavigableItems };
diff --git a/lib/sva.ts b/lib/sva.ts
index bc0c10cd..347315ce 100644
--- a/lib/sva.ts
+++ b/lib/sva.ts
@@ -1,501 +1,48 @@
 /**
  * Data access layer for Songs of the Vaiṣṇava Ācāryas (SVA).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * SVA is a hierarchical song book with 4 parent parts, each containing
- * multiple songs (sub-chapters). Each song is stored as its own
- * prose_chapters document with slugs like "1-1", "1-2", "2-1", etc.
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/sva/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
+ * SVA is a hierarchical book with parent chapters and sub-chapters (songs).
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  getNavigableItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "sva";
 
-const BOOK = "sva";
+export type SvaMeta = BookMeta;
+export type SvaSubChapterEntry = { slug: string; title: string };
+export type SvaIntroSegment = IntroSegment;
+export type SvaChapter = Chapter;
+export type SvaSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-const SVA_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "sva");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type SvaMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: SvaParentChapter[];
-};
-
-export type SvaParentChapter = {
-  number: number;
-  title: string;
-  subChapters: SvaSubChapterEntry[];
-};
-
-export type SvaSubChapterEntry = {
-  slug: string; // "1-1", "1-2", etc.
-  title: string;
-};
-
-export type SvaIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type SvaChapter = {
-  book: string;
-  chapter: string; // "1-1", "2-1", etc.
-  parentChapter: number;
-  subChapter: number;
-  title: string;
-  parentTitle: string;
-  type: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type SvaSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1-1", "parent-1", etc. */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "parent" | "sub-chapter" */
-  type: string;
-  /** Parent chapter number, or null for intro segments */
-  parentChapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getSvaMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getSvaIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  try {
-    if (!fs.existsSync(filePath)) return null;
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getSvaIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): SvaIntroSegment[] {
-  const introDir = path.join(SVA_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: SvaIntroSegment[] = [];
-  const files = ["front-pages.json", "foreword.json", "introduction.json"];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<SvaIntroSegment>(filePath);
-    if (seg) {
-      results.push({
-        ...seg,
-        slug: seg.slug.startsWith("intro-") ? seg.slug : `intro-${seg.slug}`,
-      });
-    }
-  }
-  return results.sort((a, b) => a.order - b.order);
+export async function getSvaChapter(slug: string) {
+  return getChapter(CODE, slug);
 }
-
-function getLocalSubChapter(slug: string): SvaChapter | null {
-  const filePath = path.join(SVA_JSON_DIR, "chapters", `${slug}.json`);
-  return readLocalJson<SvaChapter>(filePath);
+export async function getSvaContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list with sub-chapters, etc.)
- */
-export async function getSvaMeta(): Promise<SvaMeta | null> {
-  try {
-    const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-    if (meta) return meta.data as unknown as SvaMeta;
-  } catch {
-    // fall through to local JSON
-  }
-
-  // Fallback to local JSON
-  const introPath = path.join(SVA_JSON_DIR, "intro.json");
-  return readLocalJson<SvaMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getSvaIntroSegments(): Promise<SvaIntroSegment[]> {
-  try {
-    const results = await prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-      orderBy: { order: "asc" },
-    });
-
-    if (results.length > 0) {
-      return results.map((doc) => ({
-        slug: doc.slug,
-        title: doc.title,
-        type: doc.type,
-        book: doc.book,
-        order: doc.order,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      }));
-    }
-  } catch {
-    // fall through to local JSON
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-foreword" (URL slug) and "foreword" (raw slug).
- */
-export async function getSvaIntroSegment(
-  slug: string,
-): Promise<SvaIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-")
-    ? slug.replace(/^intro-/, "")
-    : slug;
-
-  try {
-    const doc = await prisma.proseChapter.findUnique({
-      where: {
-        book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-      },
-    });
-
-    if (doc) {
-      return {
-        slug: doc.slug,
-        title: doc.title,
-        type: doc.type,
-        book: doc.book,
-        order: doc.order,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      };
-    }
-  } catch {
-    // fall through to local JSON
-  }
-
-  // Fallback to local JSON
-  const filePath = path.join(SVA_JSON_DIR, "intro", `${rawSlug}.json`);
-  const local = readLocalJson<SvaIntroSegment>(filePath);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters (sub-chapters / songs like "1-1", "2-3", etc.)
-// ---------------------------------------------------------------------------
-
-/**
- * A sub-chapter (song) by its slug (e.g. "1-1", "2-3").
- */
-export async function getSvaChapter(slug: string): Promise<SvaChapter | null> {
-  try {
-    const doc = await prisma.proseChapter.findUnique({
-      where: {
-        book_volume_slug: {
-          book: BOOK,
-          volume: NO_VOLUME,
-          slug,
-        },
-      },
-    });
-
-    if (doc) {
-      // Parse parentChapter and subChapter from slug "X-Y"
-      const parts = slug.split("-");
-      const parentChapter = parseInt(parts[0], 10);
-      const subChapter = parseInt(parts[1], 10);
-
-      // Derive parentTitle from meta if available
-      const meta = await getSvaMeta();
-      const parentEntry = meta?.chapters.find(
-        (ch) => ch.number === parentChapter,
-      );
-      const parentTitle = parentEntry?.title ?? "";
-
-      return {
-        book: doc.book,
-        chapter: slug,
-        parentChapter,
-        subChapter,
-        title: doc.title,
-        parentTitle,
-        type: doc.type,
-        paragraphs: normalizeParagraphs(doc.paragraphs),
-      };
-    }
-  } catch {
-    // fall through to local JSON
-  }
-
-  // Fallback to local JSON
-  const local = getLocalSubChapter(slug);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"      → intro segment
- *   "intro-foreword"         → intro segment
- *   "intro-introduction"     → intro segment
- *   "1-1", "2-3", etc.       → sub-chapter (song)
- */
-export async function getSvaContent(
-  slug: string,
-): Promise<SvaChapter | SvaIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getSvaIntroSegment(slug);
-  }
-
-  // Sub-chapter slug like "1-1", "2-3"
-  return getSvaChapter(slug);
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list with hierarchical structure.
- *
- * Order: intro segments (front-pages, foreword, introduction)
- *        → parent-1 (label) → 1-1, 1-2, ...
- *        → parent-2 (label) → 2-1, 2-2, ...
- *        → etc.
- *
- * "parent" type items are non-clickable headings. Only "intro-segment" and
- * "sub-chapter" items are navigable pages.
- */
-export async function getSvaSidebarItems(): Promise<SvaSidebarItem[]> {
-  let allDocs: {
-    slug: string;
-    title: string;
-    type: string;
-    chapter: number | null;
-    order: number;
-  }[] = [];
-
-  const meta = await getSvaMeta();
-
-  try {
-    const results = await prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: {
-        slug: true,
-        title: true,
-        type: true,
-        chapter: true,
-        order: true,
-      },
-    });
-    allDocs = results;
-  } catch {
-    // Prisma error — build sidebar from meta alone
-  }
-
-  if (!meta) {
-    // Try building from local JSON
-    const localMeta = readLocalJson<SvaMeta>(
-      path.join(SVA_JSON_DIR, "intro.json"),
-    );
-    if (!localMeta) return [];
-    return buildSidebarFromMeta(localMeta);
-  }
-
-  // If we have no DB docs, build from meta alone
-  if (allDocs.length === 0) {
-    return buildSidebarFromMeta(meta);
-  }
-
-  const items: SvaSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && doc.order < 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        parentChapter: null,
-      });
-    }
-  }
-
-  // Chapters — grouped by parent chapter with sub-chapters
-  for (const ch of meta.chapters) {
-    // Parent heading (non-clickable label)
-    items.push({
-      slug: `parent-${ch.number}`,
-      label: `Part ${ch.number}: ${ch.title}`,
-      type: "parent",
-      parentChapter: ch.number,
-    });
-
-    // Sub-chapters under this parent
-    for (const sub of ch.subChapters) {
-      items.push({
-        slug: sub.slug,
-        label: sub.title,
-        type: "sub-chapter",
-        parentChapter: ch.number,
-      });
-    }
-  }
-
-  // Intro segments that come AFTER chapters (order >= 99)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && doc.order >= 99) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        parentChapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-/**
- * Build sidebar items purely from metadata (when DB is unavailable).
- */
-function buildSidebarFromMeta(meta: SvaMeta): SvaSidebarItem[] {
-  const items: SvaSidebarItem[] = [];
-
-  // Hardcoded intro segments
-  items.push({
-    slug: "intro-front-pages",
-    label: "Front Pages",
-    type: "intro-segment",
-    parentChapter: null,
-  });
-  items.push({
-    slug: "intro-foreword",
-    label: "Foreword",
-    type: "intro-segment",
-    parentChapter: null,
-  });
-  items.push({
-    slug: "intro-introduction",
-    label: "Introduction",
-    type: "intro-segment",
-    parentChapter: null,
-  });
-
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: `parent-${ch.number}`,
-      label: `Part ${ch.number}: ${ch.title}`,
-      type: "parent",
-      parentChapter: ch.number,
-    });
-
-    for (const sub of ch.subChapters) {
-      items.push({
-        slug: sub.slug,
-        label: sub.title,
-        type: "sub-chapter",
-        parentChapter: ch.number,
-      });
-    }
-  }
-
-  return items;
-}
-
-/**
- * Get the flat list of navigable sidebar items (excludes "parent" headings).
- * Used for prev/next navigation.
- */
-export function getNavigableItems(items: SvaSidebarItem[]): SvaSidebarItem[] {
-  return items.filter((item) => item.type !== "parent");
+export async function getSvaSidebarItems() {
+  return getSidebarItems(CODE);
 }
+export { getNavigableItems };
diff --git a/lib/te.ts b/lib/te.ts
index 5eac6ae3..5590fb6c 100644
--- a/lib/te.ts
+++ b/lib/te.ts
@@ -1,164 +1,52 @@
-/**
- * Data access layer for Two Essays (TE).
- *
- * Reads from MongoDB via Prisma.
- * TE is a collection of 2 standalone essays using the `essays` collection
- * (not `prose_chapters`). Essays are grouped by `group: "two-essays"`.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - essays (via Prisma Essay model)
- */
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+const CODE = "te";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type TeMeta = BookMeta;
+export type TeEssayEntry = { slug: string; title: string; order: number };
+export type TeIntroSegment = IntroSegment;
+export type TeEssay = Chapter;
+export type TeChapter = Chapter;
+export type TeSidebarItem = SidebarItem;
 
-const GROUP = "two-essays";
-const BOOK = "te";
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type TeMeta = {
-  group: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  essays: TeEssayEntry[];
-};
-
-export type TeEssayEntry = {
-  slug: string;
-  title: string;
-  order: number;
-};
-
-export type TeEssay = {
-  slug: string;
-  title: string;
-  author: string;
-  year: number | null;
-  group: string | null;
-  order: number;
-  paragraphs: string[];
-};
-
-export type TeSidebarItem = {
-  slug: string;
-  label: string;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/ej.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getTeMeta() {
+  return getBookMeta(CODE);
+}
+export async function getTeIntroSegments() {
+  return getIntroSegments(CODE);
+}
+export async function getTeIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
+}
+export async function getTeChapter(slug: string) {
+  return getChapter(CODE, slug);
+}
+export async function getTeContent(slug: string) {
+  return getContent(CODE, slug);
+}
+export async function getTeSidebarItems() {
+  return getSidebarItems(CODE);
 }
 
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, essay list, etc.)
- */
-export async function getTeMeta(): Promise<TeMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as TeMeta;
-}
-
-// ---------------------------------------------------------------------------
-// Essays
-// ---------------------------------------------------------------------------
-
-/**
- * All essays in the "two-essays" group, ordered by `order`.
- */
 export async function getTeEssays(): Promise<TeEssay[]> {
-  const results = await prisma.essay.findMany({
-    where: { group: GROUP },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    author: doc.author,
-    year: doc.year,
-    group: doc.group,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+  const items = await getIntroSegments(CODE);
+  return items as unknown as TeEssay[];
 }
 
-/**
- * A single essay by slug.
- */
 export async function getTeEssay(slug: string): Promise<TeEssay | null> {
-  const doc = await prisma.essay.findUnique({ where: { slug } });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    author: doc.author,
-    year: doc.year,
-    group: doc.group,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the sidebar navigation list from meta.
- */
-export async function getTeSidebarItems(): Promise<TeSidebarItem[]> {
-  const meta = await getTeMeta();
-  if (!meta) return [];
-  return meta.essays.map((e) => ({
-    slug: e.slug,
-    label: e.title,
-  }));
+  const chapter = await getChapter(CODE, slug);
+  if (chapter) return chapter;
+  const intro = await getIntroSegment(CODE, slug);
+  return intro as unknown as TeEssay | null;
 }
diff --git a/lib/tlc.ts b/lib/tlc.ts
index 7496672d..d161aeba 100644
--- a/lib/tlc.ts
+++ b/lib/tlc.ts
@@ -1,292 +1,45 @@
 /**
  * Data access layer for Teachings of Lord Caitanya (TLC).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * TLC is a prose book (like KB) but has no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "tlc";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type TlcMeta = BookMeta;
+export type TlcChapterEntry = { number: number; title: string };
+export type TlcIntroSegment = IntroSegment;
+export type TlcChapter = Chapter;
+export type TlcSidebarItem = SidebarItem;
 
-const BOOK = "tlc";
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type TlcMeta = {
-  book: string;
-  title: string;
-  subtitle: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  parts: TlcPart[];
-  chapters: TlcChapterEntry[];
-};
-
-export type TlcPart = {
-  number: number;
-  title: string;
-  chapters: number[];
-};
-
-export type TlcChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type TlcIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type TlcChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type TlcSidebarItem = {
-  /** URL-safe slug: "intro-front-flap", "1", "32" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getTlcMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getTlcIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, parts, chapter list, etc.)
- */
-export async function getTlcMeta(): Promise<TlcMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as TlcMeta;
+export async function getTlcIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getTlcIntroSegments(): Promise<TlcIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getTlcChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-preface" (URL slug) and "preface" (raw slug).
- */
-export async function getTlcIntroSegment(
-  slug: string,
-): Promise<TlcIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getTlcContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–32).
- */
-export async function getTlcChapter(
-  chapterNum: number,
-): Promise<TlcChapter | null> {
-  if (chapterNum < 1 || chapterNum > 32 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-flap"    → intro segment
- *   "intro-preface"       → intro segment
- *   "intro-introduction"  → intro segment
- *   "1" … "32"            → chapter
- */
-export async function getTlcContent(
-  slug: string,
-): Promise<TlcChapter | TlcIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getTlcIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 32) {
-    return getTlcChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: intro segments → chapters 1–32
- * (TLC has no concluding-words section.)
- */
-export async function getTlcSidebarItems(): Promise<TlcSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getTlcMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: TlcSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–32 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+export async function getTlcSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/tlk.ts b/lib/tlk.ts
index be0cbb00..3143bf79 100644
--- a/lib/tlk.ts
+++ b/lib/tlk.ts
@@ -1,453 +1,45 @@
 /**
  * Data access layer for Teachings of Lord Kapila (TLK).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * TLK is a prose book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/tlk/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "tlk";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type TlkMeta = BookMeta;
+export type TlkChapterEntry = { number: number; title: string };
+export type TlkIntroSegment = IntroSegment;
+export type TlkChapter = Chapter;
+export type TlkSidebarItem = SidebarItem;
 
-const BOOK = "tlk";
-
-const TLK_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "tlk");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type TlkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: TlkChapterEntry[];
-};
-
-export type TlkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type TlkIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type TlkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type TlkSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "18", "intro-about-the-author" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getTlkMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getTlkIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getTlkIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): TlkIntroSegment[] {
-  const introDir = path.join(TLK_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: TlkIntroSegment[] = [];
-  const files = [
-    "front-pages.json",
-    "foreword.json",
-    "about-the-author.json",
-    "credits.json",
-    "back-flap.json",
-  ];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<TlkIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getTlkChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): TlkIntroSegment | null {
-  const filePath = path.join(TLK_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<TlkIntroSegment>(filePath);
+export async function getTlkContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): TlkChapter | null {
-  const filePath = path.join(
-    TLK_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<TlkChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getTlkMeta(): Promise<TlkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as TlkMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(TLK_JSON_DIR, "intro.json");
-  return readLocalJson<TlkMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getTlkIntroSegments(): Promise<TlkIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-foreword" (URL slug) and "foreword" (raw slug).
- */
-export async function getTlkIntroSegment(
-  slug: string,
-): Promise<TlkIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–18).
- */
-export async function getTlkChapter(
-  chapterNum: number,
-): Promise<TlkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 18 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"        → intro segment
- *   "intro-foreword"           → intro segment
- *   "intro-about-the-author"   → intro segment
- *   "intro-credits"            → intro segment
- *   "intro-back-flap"          → intro segment
- *   "1" … "18"                 → chapter
- */
-export async function getTlkContent(
-  slug: string,
-): Promise<TlkChapter | TlkIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getTlkIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 18) {
-    return getTlkChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → foreword → chapters 1–18 → about-the-author → credits → back-flap
- */
-export async function getTlkSidebarItems(): Promise<TlkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getTlkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: TlkMeta,
-  allDocs: { slug: string; title: string; type: string; chapter: number | null; order: number | null }[],
-): TlkSidebarItem[] {
-  const items: TlkSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 50)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) < 50) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–18 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Intro segments that come AFTER chapters (order >= 50, e.g. about-the-author, credits, back-flap)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) >= 50) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: TlkMeta | null): TlkSidebarItem[] {
-  const items: TlkSidebarItem[] = [];
-
-  // Local intro segments (front matter)
-  const introSegs = getLocalIntroSegments();
-  const frontMatter = introSegs.filter((s) => (s.order ?? 0) < 50);
-  const backMatter = introSegs.filter((s) => (s.order ?? 0) >= 50);
-
-  for (const seg of frontMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Chapters from meta or generate default 1-18
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(TLK_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<TlkChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  // Back matter (about-the-author, credits, back-flap)
-  for (const seg of backMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  return items;
+export async function getTlkSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/tqk.ts b/lib/tqk.ts
index 46d2e29d..05a351d4 100644
--- a/lib/tqk.ts
+++ b/lib/tqk.ts
@@ -1,449 +1,45 @@
 /**
  * Data access layer for Teachings of Queen Kuntī (TQK).
  *
- * Reads from MongoDB via Prisma, same as the rest of the app.
- * TQK is a prose book with no volume structure —
- * we use volume=0 as the sentinel for "no volumes".
- *
- * When the DB isn't seeded yet, falls back to reading local JSON files
- * from lib/jsons/books/tqk/.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
-import fs from "fs";
-import path from "path";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "tqk";
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
+export type TqkMeta = BookMeta;
+export type TqkChapterEntry = { number: number; title: string };
+export type TqkIntroSegment = IntroSegment;
+export type TqkChapter = Chapter;
+export type TqkSidebarItem = SidebarItem;
 
-const BOOK = "tqk";
-
-const TQK_JSON_DIR = path.join(process.cwd(), "lib", "jsons", "books", "tqk");
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type TqkMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year?: number;
-  description: string;
-  totalChapters: number;
-  chapters: TqkChapterEntry[];
-};
-
-export type TqkChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type TqkIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type TqkChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type TqkSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "26", "intro-back-flap" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation (mirrors lib/api.ts)
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getTqkMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getTqkIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Local JSON helpers (fallback when DB is not seeded)
-// ---------------------------------------------------------------------------
-
-function readLocalJson<T>(filePath: string): T | null {
-  if (!fs.existsSync(filePath)) return null;
-  try {
-    return JSON.parse(fs.readFileSync(filePath, "utf-8")) as T;
-  } catch {
-    return null;
-  }
+export async function getTqkIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-function getLocalIntroSegments(): TqkIntroSegment[] {
-  const introDir = path.join(TQK_JSON_DIR, "intro");
-  if (!fs.existsSync(introDir)) return [];
-
-  const results: TqkIntroSegment[] = [];
-  const files = [
-    "front-pages.json",
-    "introduction.json",
-    "back-flap.json",
-  ];
-  for (const file of files) {
-    const filePath = path.join(introDir, file);
-    const seg = readLocalJson<TqkIntroSegment>(filePath);
-    if (seg) results.push(seg);
-  }
-  return results.sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
+export async function getTqkChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-function getLocalIntroSegment(rawSlug: string): TqkIntroSegment | null {
-  const filePath = path.join(TQK_JSON_DIR, "intro", `${rawSlug}.json`);
-  return readLocalJson<TqkIntroSegment>(filePath);
+export async function getTqkContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-function getLocalChapter(chapterNum: number): TqkChapter | null {
-  const filePath = path.join(
-    TQK_JSON_DIR,
-    "chapters",
-    String(chapterNum).padStart(2, "0") + ".json",
-  );
-  return readLocalJson<TqkChapter>(filePath);
-}
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getTqkMeta(): Promise<TqkMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (meta) return meta.data as unknown as TqkMeta;
-
-  // Fallback to local JSON
-  const introPath = path.join(TQK_JSON_DIR, "intro.json");
-  return readLocalJson<TqkMeta>(introPath);
-}
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getTqkIntroSegments(): Promise<TqkIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  if (results.length > 0) {
-    return results.map((doc) => ({
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    }));
-  }
-
-  // Fallback to local JSON
-  return getLocalIntroSegments();
-}
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-introduction" (URL slug) and "introduction" (raw slug).
- */
-export async function getTqkIntroSegment(
-  slug: string,
-): Promise<TqkIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-  const rawSlug = slug.startsWith("intro-") ? slug.replace(/^intro-/, "") : slug;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-
-  if (doc) {
-    return {
-      slug: doc.slug,
-      title: doc.title,
-      type: doc.type,
-      book: doc.book,
-      order: doc.order,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalIntroSegment(rawSlug);
-  if (!local) return null;
-  return {
-    ...local,
-    slug: dbSlug,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–26).
- */
-export async function getTqkChapter(
-  chapterNum: number,
-): Promise<TqkChapter | null> {
-  if (chapterNum < 1 || chapterNum > 26 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-
-  if (doc) {
-    return {
-      book: doc.book,
-      chapter: doc.chapter,
-      title: doc.title,
-      type: doc.type,
-      slug: doc.slug,
-      paragraphs: normalizeParagraphs(doc.paragraphs),
-    };
-  }
-
-  // Fallback to local JSON
-  const local = getLocalChapter(chapterNum);
-  if (!local) return null;
-  return {
-    ...local,
-    paragraphs: local.paragraphs.map(sanitizeHtml),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"        → intro segment
- *   "intro-introduction"       → intro segment
- *   "intro-back-flap"          → intro segment
- *   "1" … "26"                 → chapter
- */
-export async function getTqkContent(
-  slug: string,
-): Promise<TqkChapter | TqkIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getTqkIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 26) {
-    return getTqkChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → introduction → chapters 1–26 → back-flap
- */
-export async function getTqkSidebarItems(): Promise<TqkSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getTqkMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true, order: true },
-    }),
-  ]);
-
-  // If we got DB results, build from those
-  if (meta && allDocs.length > 0) {
-    return buildSidebarFromDocs(meta, allDocs);
-  }
-
-  // Fallback: build from local JSON
-  return buildSidebarFromLocal(meta);
-}
-
-function buildSidebarFromDocs(
-  meta: TqkMeta,
-  allDocs: { slug: string; title: string; type: string; chapter: number | null; order: number | null }[],
-): TqkSidebarItem[] {
-  const items: TqkSidebarItem[] = [];
-
-  // Intro segments that come BEFORE chapters (order < 50)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) < 50) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–26 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `Chapter ${ch.number}: ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  // Intro segments that come AFTER chapters (order >= 50, e.g. back-flap)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment" && (doc.order ?? 0) >= 50) {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  return items;
-}
-
-function buildSidebarFromLocal(meta: TqkMeta | null): TqkSidebarItem[] {
-  const items: TqkSidebarItem[] = [];
-
-  // Local intro segments (front matter)
-  const introSegs = getLocalIntroSegments();
-  const frontMatter = introSegs.filter((s) => (s.order ?? 0) < 50);
-  const backMatter = introSegs.filter((s) => (s.order ?? 0) >= 50);
-
-  for (const seg of frontMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  // Chapters from meta or generate default 1-26
-  if (meta && meta.chapters) {
-    for (const ch of meta.chapters) {
-      items.push({
-        slug: String(ch.number),
-        label: `Chapter ${ch.number}: ${ch.title}`,
-        type: "chapter",
-        chapter: ch.number,
-      });
-    }
-  } else {
-    // Fallback: scan local chapter JSONs
-    const chaptersDir = path.join(TQK_JSON_DIR, "chapters");
-    if (fs.existsSync(chaptersDir)) {
-      const files = fs
-        .readdirSync(chaptersDir)
-        .filter((f) => f.endsWith(".json"))
-        .sort();
-      for (const file of files) {
-        const ch = readLocalJson<TqkChapter>(path.join(chaptersDir, file));
-        if (ch) {
-          const num = ch.chapter ?? parseInt(file.replace(".json", ""), 10);
-          items.push({
-            slug: String(num),
-            label: `Chapter ${num}: ${ch.title}`,
-            type: "chapter",
-            chapter: num,
-          });
-        }
-      }
-    }
-  }
-
-  // Back matter (back-flap)
-  for (const seg of backMatter) {
-    items.push({
-      slug: `intro-${seg.slug}`,
-      label: seg.title,
-      type: "intro-segment",
-      chapter: null,
-    });
-  }
-
-  return items;
+export async function getTqkSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/transcriptions.ts b/lib/transcriptions.ts
index dda0d086..2f670bdb 100644
--- a/lib/transcriptions.ts
+++ b/lib/transcriptions.ts
@@ -1,16 +1,22 @@
 /**
  * Data access layer for Transcriptions.
  *
- * Uses Prisma to query the `transcriptions` collection in MongoDB.
- * Replaces the previous local-JSON-file approach so that data is always
- * served from the database (seeded via seed-transcriptions.ts).
+ * Calls the Go BFF API instead of Prisma directly.
+ * All responses are unwrapped from the BFF envelope by lib/bff.ts.
  *
- * Some documents store their content as a JSON string in `contentJson`
- * (a BSON wire-protocol workaround for very large nested arrays).
- * The `getTranscription()` helper transparently parses that fallback.
+ * BFF endpoints used:
+ *   GET /api/v1/transcriptions              → { count }
+ *   GET /api/v1/transcriptions/years        → [{ _id, count }]
+ *   GET /api/v1/transcriptions/places       → [{ _id, count }]
+ *   GET /api/v1/transcriptions/types        → { lectures, conversations }
+ *   GET /api/v1/transcriptions/year/{year}  → [TranscriptionSummary]
+ *   GET /api/v1/transcriptions/place/{place} → [TranscriptionSummary]
+ *   GET /api/v1/transcriptions/type/{type}  → [TranscriptionSummary]
+ *   GET /api/v1/transcriptions/{slug}       → TranscriptionFull
+ *   GET /api/v1/transcriptions/adjacent/{slug}?year=N → { prev, next }
  */
 
-import { prisma } from "@/lib/db";
+import { bff, bffList } from "@/lib/bff";
 
 // ---------------------------------------------------------------------------
 // Types
@@ -54,25 +60,37 @@ export type PlaceGroup = {
 };
 
 // ---------------------------------------------------------------------------
-// Prisma select objects (keep queries lightweight)
+// BFF response types (snake_case from Go)
 // ---------------------------------------------------------------------------
 
-/** Fields needed for summary views (no content). */
-const SUMMARY_SELECT = {
-  slug: true,
-  name: true,
-  type: true,
-  date: true,
-  year: true,
-  month: true,
-  day: true,
-  place: true,
-  context: true,
-  reference: true,
-  durationMinutes: true,
-  participants: true,
-  audioUrl: true,
-} as const;
+type BffSummary = {
+  id?: string;
+  slug: string;
+  name: string;
+  type: string;
+  date?: string | null;
+  year?: number | null;
+  month?: number | null;
+  day?: number | null;
+  place?: string | null;
+  context?: string | null;
+  reference?: string | null;
+  duration_minutes?: number | null;
+  audio_url?: string | null;
+  participants?: string[];
+};
+
+type BffFull = BffSummary & {
+  content?: BffContentBlock[];
+  content_json?: string;
+};
+
+type BffContentBlock = {
+  text: string;
+  format: string;
+  alignment: string;
+  speaker?: string | null;
+};
 
 // ---------------------------------------------------------------------------
 // Sanitize
@@ -90,49 +108,88 @@ function sanitizeHtml(html: string): string {
   return clean;
 }
 
+// ---------------------------------------------------------------------------
+// Mappers (snake_case BFF → camelCase frontend)
+// ---------------------------------------------------------------------------
+
+function mapSummary(s: BffSummary): TranscriptionSummary {
+  return {
+    slug: s.slug,
+    name: s.name,
+    type: s.type,
+    date: s.date ?? null,
+    year: s.year ?? null,
+    month: s.month ?? null,
+    day: s.day ?? null,
+    place: s.place ?? null,
+    context: s.context ?? null,
+    reference: s.reference ?? null,
+    durationMinutes: s.duration_minutes ?? null,
+    participants: s.participants ?? [],
+    audioUrl: s.audio_url ?? null,
+  };
+}
+
+function mapContentBlock(b: BffContentBlock): ContentBlock {
+  return {
+    text: sanitizeHtml(b.text),
+    format: b.format,
+    alignment: b.alignment,
+    speaker: b.speaker ?? null,
+  };
+}
+
+function mapFull(t: BffFull): TranscriptionFull {
+  let content: ContentBlock[] = [];
+
+  if (t.content && t.content.length > 0) {
+    content = t.content.map(mapContentBlock);
+  } else if (t.content_json && t.content_json.length > 2) {
+    // contentJson fallback (BSON workaround for very large nested arrays)
+    try {
+      const parsed = JSON.parse(t.content_json) as BffContentBlock[];
+      content = parsed.map(mapContentBlock);
+    } catch {
+      // Ignore parse errors — return empty content
+    }
+  }
+
+  return {
+    ...mapSummary(t),
+    content,
+  };
+}
+
 // ---------------------------------------------------------------------------
 // Index / overview queries
 // ---------------------------------------------------------------------------
 
 export async function getTranscriptionYears(): Promise<YearGroup[]> {
-  const transcriptions = await prisma.transcription.findMany({
-    where: { year: { not: null }, isPublished: true },
-    select: { year: true },
-  });
-
-  const counts: Record<number, number> = {};
-  for (const t of transcriptions) {
-    if (t.year) {
-      counts[t.year] = (counts[t.year] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([year, count]) => ({ year: Number(year), count }))
+  const raw = await bffList<{ _id: number; count: number }>(
+    "/transcriptions/years",
+    { tags: ["transcriptions"] },
+  );
+  return raw
+    .map((item) => ({ year: item._id, count: item.count }))
     .filter((g) => g.year >= 1960 && g.year <= 1980)
     .sort((a, b) => a.year - b.year);
 }
 
 export async function getTranscriptionPlaces(): Promise<PlaceGroup[]> {
-  const transcriptions = await prisma.transcription.findMany({
-    where: { place: { not: null }, isPublished: true },
-    select: { place: true },
-  });
-
-  const counts: Record<string, number> = {};
-  for (const t of transcriptions) {
-    if (t.place) {
-      counts[t.place] = (counts[t.place] || 0) + 1;
-    }
-  }
-
-  return Object.entries(counts)
-    .map(([name, count]) => ({ name, count }))
+  const raw = await bffList<{ _id: string; count: number }>(
+    "/transcriptions/places",
+    { tags: ["transcriptions"] },
+  );
+  return raw
+    .map((item) => ({ name: item._id, count: item.count }))
     .sort((a, b) => b.count - a.count);
 }
 
 export async function getTotalTranscriptionCount(): Promise<number> {
-  return prisma.transcription.count({ where: { isPublished: true } });
+  const res = await bff<{ count: number }>("/transcriptions", {
+    tags: ["transcriptions"],
+  });
+  return res?.count ?? 0;
 }
 
 /**
@@ -143,21 +200,18 @@ export async function getTranscriptionIndex(): Promise<{
   totalTranscriptions: number;
   typeDistribution: Record<string, number>;
 }> {
-  const [total, lectures, conversations] = await Promise.all([
-    prisma.transcription.count({ where: { isPublished: true } }),
-    prisma.transcription.count({
-      where: { isPublished: true, type: "lecture" },
-    }),
-    prisma.transcription.count({
-      where: { isPublished: true, type: "conversation" },
+  const [countRes, typesRes] = await Promise.all([
+    bff<{ count: number }>("/transcriptions", { tags: ["transcriptions"] }),
+    bff<{ lectures: number; conversations: number }>("/transcriptions/types", {
+      tags: ["transcriptions"],
     }),
   ]);
 
   return {
-    totalTranscriptions: total,
+    totalTranscriptions: countRes?.count ?? 0,
     typeDistribution: {
-      lecture: lectures,
-      conversation: conversations,
+      lecture: typesRes?.lectures ?? 0,
+      conversation: typesRes?.conversations ?? 0,
     },
   };
 }
@@ -169,34 +223,29 @@ export async function getTranscriptionIndex(): Promise<{
 export async function getTranscriptionsByYear(
   year: number,
 ): Promise<TranscriptionSummary[]> {
-  const transcriptions = await prisma.transcription.findMany({
-    where: { year, isPublished: true },
-    orderBy: [{ month: "asc" }, { day: "asc" }],
-    select: SUMMARY_SELECT,
+  const raw = await bffList<BffSummary>(`/transcriptions/year/${year}`, {
+    tags: ["transcriptions"],
   });
-  return transcriptions;
+  return raw.map(mapSummary);
 }
 
 export async function getTranscriptionsByPlace(
   place: string,
 ): Promise<TranscriptionSummary[]> {
-  const transcriptions = await prisma.transcription.findMany({
-    where: { place, isPublished: true },
-    orderBy: [{ year: "asc" }, { month: "asc" }, { day: "asc" }],
-    select: SUMMARY_SELECT,
+  const encoded = encodeURIComponent(place);
+  const raw = await bffList<BffSummary>(`/transcriptions/place/${encoded}`, {
+    tags: ["transcriptions"],
   });
-  return transcriptions;
+  return raw.map(mapSummary);
 }
 
 export async function getTranscriptionsByType(
   type: string,
 ): Promise<TranscriptionSummary[]> {
-  const transcriptions = await prisma.transcription.findMany({
-    where: { type, isPublished: true },
-    orderBy: [{ year: "asc" }, { month: "asc" }, { day: "asc" }],
-    select: SUMMARY_SELECT,
+  const raw = await bffList<BffSummary>(`/transcriptions/type/${type}`, {
+    tags: ["transcriptions"],
   });
-  return transcriptions;
+  return raw.map(mapSummary);
 }
 
 // ---------------------------------------------------------------------------
@@ -206,54 +255,11 @@ export async function getTranscriptionsByType(
 export async function getTranscription(
   slug: string,
 ): Promise<TranscriptionFull | null> {
-  const t = await prisma.transcription.findUnique({ where: { slug } });
-  if (!t || !t.isPublished) return null;
-
-  // Content may be stored as embedded array or as a JSON string fallback
-  let content: ContentBlock[] = [];
-
-  if (t.content && t.content.length > 0) {
-    content = t.content.map((block) => ({
-      text: sanitizeHtml(block.text),
-      format: block.format,
-      alignment: block.alignment,
-      speaker: block.speaker ?? null,
-    }));
-  } else {
-    // Check for contentJson fallback (BSON workaround for large documents)
-    const raw = t as unknown as Record<string, unknown>;
-    const contentJson = raw.contentJson;
-    if (typeof contentJson === "string" && contentJson.length > 2) {
-      try {
-        const parsed = JSON.parse(contentJson) as ContentBlock[];
-        content = parsed.map((block) => ({
-          text: sanitizeHtml(block.text),
-          format: block.format,
-          alignment: block.alignment,
-          speaker: block.speaker ?? null,
-        }));
-      } catch {
-        // Ignore parse errors — return empty content
-      }
-    }
-  }
-
-  return {
-    slug: t.slug,
-    name: t.name,
-    type: t.type,
-    date: t.date,
-    year: t.year,
-    month: t.month,
-    day: t.day,
-    place: t.place,
-    context: t.context,
-    reference: t.reference,
-    durationMinutes: t.durationMinutes,
-    participants: t.participants,
-    audioUrl: t.audioUrl,
-    content,
-  };
+  const raw = await bff<BffFull>(`/transcriptions/${slug}`, {
+    tags: ["transcriptions"],
+  });
+  if (!raw) return null;
+  return mapFull(raw);
 }
 
 // ---------------------------------------------------------------------------
@@ -269,16 +275,18 @@ export async function getAdjacentTranscriptions(
 }> {
   if (!year) return { prev: null, next: null };
 
-  const yearTranscriptions = await prisma.transcription.findMany({
-    where: { year, isPublished: true },
-    orderBy: [{ month: "asc" }, { day: "asc" }, { slug: "asc" }],
-    select: SUMMARY_SELECT,
+  const res = await bff<{
+    prev: BffSummary | null;
+    next: BffSummary | null;
+  }>(`/transcriptions/adjacent/${slug}`, {
+    params: { year: String(year) },
+    tags: ["transcriptions"],
   });
 
-  const idx = yearTranscriptions.findIndex((t) => t.slug === slug);
+  if (!res) return { prev: null, next: null };
+
   return {
-    prev: idx > 0 ? yearTranscriptions[idx - 1] : null,
-    next:
-      idx < yearTranscriptions.length - 1 ? yearTranscriptions[idx + 1] : null,
+    prev: res.prev ? mapSummary(res.prev) : null,
+    next: res.next ? mapSummary(res.next) : null,
   };
 }
diff --git a/lib/ttp.ts b/lib/ttp.ts
index 81e10e7e..5b775972 100644
--- a/lib/ttp.ts
+++ b/lib/ttp.ts
@@ -1,280 +1,45 @@
 /**
  * Data access layer for Transcendental Teachings of Prahlāda Mahārāja (TTP).
  *
- * Reads from MongoDB via Prisma.
- * TTP is a prose book with 1 intro segment (front-pages) and 5 chapters.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
+ * Delegates to the generic book data layer which calls the BFF API.
  */
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+import {
+  getBookMeta,
+  getIntroSegments,
+  getIntroSegment,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type IntroSegment,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+const CODE = "ttp";
 
-const BOOK = "ttp";
+export type TtpMeta = BookMeta;
+export type TtpChapterEntry = { number: number; title: string };
+export type TtpIntroSegment = IntroSegment;
+export type TtpChapter = Chapter;
+export type TtpSidebarItem = SidebarItem;
 
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type TtpMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: TtpChapterEntry[];
-};
-
-export type TtpChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type TtpIntroSegment = {
-  slug: string;
-  title: string;
-  type: string;
-  book: string;
-  order: number;
-  paragraphs: string[];
-};
-
-export type TtpChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Union type used in sidebar / table-of-contents navigation. */
-export type TtpSidebarItem = {
-  /** URL-safe slug: "intro-front-pages", "1", "2", … "5" */
-  slug: string;
-  /** Human-readable label for the sidebar */
-  label: string;
-  /** "intro-segment" | "chapter" */
-  type: string;
-  /** Chapter number, or null for non-chapter items */
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getTtpMeta() {
+  return getBookMeta(CODE);
 }
-
-/** Normalize paragraphs — handles both native arrays and stringified JSON. */
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getTtpIntroSegments() {
+  return getIntroSegments(CODE);
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-/**
- * Book-level metadata (title, author, chapter list, etc.)
- */
-export async function getTtpMeta(): Promise<TtpMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as TtpMeta;
+export async function getTtpIntroSegment(slug: string) {
+  return getIntroSegment(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Intro segments
-// ---------------------------------------------------------------------------
-
-/**
- * All intro segments, ordered by their `order` field.
- */
-export async function getTtpIntroSegments(): Promise<TtpIntroSegment[]> {
-  const results = await prisma.proseChapter.findMany({
-    where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
-    orderBy: { order: "asc" },
-  });
-
-  return results.map((doc) => ({
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  }));
+export async function getTtpChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-/**
- * A single intro segment by slug.
- * Accepts both "intro-front-pages" (URL slug) and "front-pages" (raw slug).
- */
-export async function getTtpIntroSegment(
-  slug: string,
-): Promise<TtpIntroSegment | null> {
-  // DB stores with "intro-" prefix; accept either form
-  const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    slug: doc.slug,
-    title: doc.title,
-    type: doc.type,
-    book: doc.book,
-    order: doc.order,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
+export async function getTtpContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-/**
- * A numbered chapter (1–5).
- */
-export async function getTtpChapter(
-  chapterNum: number,
-): Promise<TtpChapter | null> {
-  if (chapterNum < 1 || chapterNum > 5 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-/**
- * Get content by URL slug.
- *
- *   "intro-front-pages"  → intro segment
- *   "1" … "5"            → chapter
- */
-export async function getTtpContent(
-  slug: string,
-): Promise<TtpChapter | TtpIntroSegment | null> {
-  if (slug.startsWith("intro-")) {
-    return getTtpIntroSegment(slug);
-  }
-
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 5) {
-    return getTtpChapter(num);
-  }
-
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-/**
- * Build the full sidebar navigation list.
- *
- * Order: front-pages → chapters 1–5
- */
-export async function getTtpSidebarItems(): Promise<TtpSidebarItem[]> {
-  const [meta, allDocs] = await Promise.all([
-    getTtpMeta(),
-    prisma.proseChapter.findMany({
-      where: { book: BOOK, volume: NO_VOLUME },
-      orderBy: { order: "asc" },
-      select: { slug: true, title: true, type: true, chapter: true },
-    }),
-  ]);
-
-  if (!meta) return [];
-
-  const items: TtpSidebarItem[] = [];
-
-  // Intro segments (from DB, in order)
-  for (const doc of allDocs) {
-    if (doc.type === "intro-segment") {
-      items.push({
-        slug: doc.slug,
-        label: doc.title,
-        type: "intro-segment",
-        chapter: null,
-      });
-    }
-  }
-
-  // Chapters 1–5 (use meta.chapters for consistent title/ordering)
-  for (const ch of meta.chapters) {
-    items.push({
-      slug: String(ch.number),
-      label: `${ch.number}. ${ch.title}`,
-      type: "chapter",
-      chapter: ch.number,
-    });
-  }
-
-  return items;
+export async function getTtpSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/lib/va.ts b/lib/va.ts
index 2a5aee1e..2bf28544 100644
--- a/lib/va.ts
+++ b/lib/va.ts
@@ -1,167 +1,29 @@
-/**
- * Data access layer for Vaiśiṣṭyāṣṭakam (VA).
- *
- * Reads from MongoDB via Prisma.
- * VA is a poetic work with 8 chapters (Vaiśiṣṭyas) and no intro segments.
- *
- * Collections used:
- *   - book_meta (via Prisma BookMeta model)
- *   - prose_chapters (via Prisma ProseChapter model)
- */
+import {
+  getBookMeta,
+  getChapter,
+  getContent,
+  getSidebarItems,
+  type BookMeta,
+  type Chapter,
+  type SidebarItem,
+} from "@/lib/books";
 
-import { prisma } from "@/lib/db";
-import type { JsonValue } from "@prisma/client/runtime/library";
+const CODE = "va";
 
-// ---------------------------------------------------------------------------
-// Constants
-// ---------------------------------------------------------------------------
+export type VaMeta = BookMeta;
+export type VaChapterEntry = { number: number; title: string };
+export type VaChapter = Chapter;
+export type VaSidebarItem = SidebarItem;
 
-const BOOK = "va";
-
-/** Volume sentinel for books without volumes. */
-const NO_VOLUME = 0;
-
-// ---------------------------------------------------------------------------
-// Types
-// ---------------------------------------------------------------------------
-
-export type VaMeta = {
-  book: string;
-  title: string;
-  author: string;
-  year: number;
-  description: string;
-  totalChapters: number;
-  chapters: VaChapterEntry[];
-};
-
-export type VaChapterEntry = {
-  number: number;
-  title: string;
-};
-
-export type VaChapter = {
-  book: string;
-  chapter: number | null;
-  title: string;
-  type: string;
-  slug?: string;
-  paragraphs: string[];
-};
-
-/** Used in sidebar / table-of-contents navigation. */
-export type VaSidebarItem = {
-  slug: string;
-  label: string;
-  type: string;
-  chapter: number | null;
-};
-
-// ---------------------------------------------------------------------------
-// HTML sanitisation
-// ---------------------------------------------------------------------------
-
-function sanitizeHtml(html: string): string {
-  let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
-  clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
-  clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
-  clean = clean.replace(
-    /<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
-    "",
-  );
-  clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
-  clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
-  clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
-  return clean;
+export async function getVaMeta() {
+  return getBookMeta(CODE);
 }
-
-function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
-  let result: string[];
-
-  if (typeof paragraphs === "string") {
-    try {
-      const parsed = JSON.parse(paragraphs);
-      result = Array.isArray(parsed) ? parsed : [paragraphs];
-    } catch {
-      result = [paragraphs];
-    }
-  } else if (Array.isArray(paragraphs)) {
-    result = paragraphs as string[];
-  } else {
-    result = [];
-  }
-
-  return result.map(sanitizeHtml);
+export async function getVaChapter(chapterNum: number) {
+  return getChapter(CODE, String(chapterNum));
 }
-
-// ---------------------------------------------------------------------------
-// Book meta
-// ---------------------------------------------------------------------------
-
-export async function getVaMeta(): Promise<VaMeta | null> {
-  const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
-  if (!meta) return null;
-  return meta.data as unknown as VaMeta;
+export async function getVaContent(slug: string) {
+  return getContent(CODE, slug);
 }
-
-// ---------------------------------------------------------------------------
-// Chapters
-// ---------------------------------------------------------------------------
-
-export async function getVaChapter(
-  chapterNum: number,
-): Promise<VaChapter | null> {
-  if (chapterNum < 1 || chapterNum > 8 || !Number.isInteger(chapterNum)) {
-    return null;
-  }
-
-  const doc = await prisma.proseChapter.findUnique({
-    where: {
-      book_volume_slug: {
-        book: BOOK,
-        volume: NO_VOLUME,
-        slug: String(chapterNum),
-      },
-    },
-  });
-  if (!doc) return null;
-
-  return {
-    book: doc.book,
-    chapter: doc.chapter,
-    title: doc.title,
-    type: doc.type,
-    slug: doc.slug,
-    paragraphs: normalizeParagraphs(doc.paragraphs),
-  };
-}
-
-// ---------------------------------------------------------------------------
-// Unified content accessor
-// ---------------------------------------------------------------------------
-
-export async function getVaContent(
-  slug: string,
-): Promise<VaChapter | null> {
-  const num = Number(slug);
-  if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 8) {
-    return getVaChapter(num);
-  }
-  return null;
-}
-
-// ---------------------------------------------------------------------------
-// Sidebar navigation
-// ---------------------------------------------------------------------------
-
-export async function getVaSidebarItems(): Promise<VaSidebarItem[]> {
-  const meta = await getVaMeta();
-  if (!meta) return [];
-
-  return meta.chapters.map((ch) => ({
-    slug: String(ch.number),
-    label: `${ch.number}. ${ch.title}`,
-    type: "chapter",
-    chapter: ch.number,
-  }));
+export async function getVaSidebarItems() {
+  return getSidebarItems(CODE);
 }
diff --git a/package.json b/package.json
index 6aeb52bc..68234bf7 100644
--- a/package.json
+++ b/package.json
@@ -9,18 +9,13 @@
     "lint": "eslint"
   },
   "dependencies": {
-    "@aws-sdk/client-s3": "^3.1045.0",
     "@base-ui/react": "^1.4.0",
-    "@prisma/client": "^6.19.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "dotenv": "^17.4.2",
     "framer-motion": "^12.38.0",
     "lucide-react": "^1.8.0",
-    "mongodb": "^7.1.1",
     "next": "16.2.2",
     "next-themes": "^0.4.6",
-    "prisma": "^6.19.3",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "shadcn": "^4.2.0",
diff --git a/prisma.config.ts b/prisma.config.ts
deleted file mode 100644
index f43bc018..00000000
--- a/prisma.config.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import "dotenv/config";
-import { defineConfig } from "prisma/config";
-
-export default defineConfig({
-  schema: "prisma/schema.prisma",
-  datasource: {
-    url: process.env["DATABASE_URL"]!,
-  },
-});
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
deleted file mode 100644
index c615fed2..00000000
--- a/prisma/schema.prisma
+++ /dev/null
@@ -1,398 +0,0 @@
-generator client {
-  provider = "prisma-client-js"
-}
-
-datasource db {
-  provider = "mongodb"
-  url      = env("DATABASE_URL")
-}
-
-// ---------------------------------------------------------------------------
-// Synonym — embedded document inside Verse
-// ---------------------------------------------------------------------------
-type Synonym {
-  word     String
-  meanings String[]
-}
-
-// ---------------------------------------------------------------------------
-// Verse — unified model for BG, SB, and CC verses
-//
-// book: "bg" | "sb" | "cc"
-// division: null for BG, canto number string for SB ("1"-"10"),
-//           līlā key for CC ("adi", "madhya", "antya")
-// chapter: chapter number
-// verse: verse number (first verse number for multi-verse entries)
-// verseEnd: last verse number for multi-verse entries (e.g. 18 for "16-18")
-// reference: display reference string (e.g. "Bg 1.1", "SB 1.1.1", "Cc Ādi 1.1")
-// ---------------------------------------------------------------------------
-model Verse {
-  id              String    @id @default(auto()) @map("_id") @db.ObjectId
-  book            String    // "bg" | "sb" | "cc"
-  division        String?   // null for BG; canto for SB; lila for CC
-  chapter         Int
-  verse           Int
-  verseEnd        Int?
-  reference       String
-  bookTitle       String
-  devanagari      String
-  bengali         String?   // only CC has Bengali
-  transliteration String
-  synonyms        Synonym[]
-  translation     String
-  purport         String[]
-
-  @@unique([book, division, chapter, verse])
-  @@index([book])
-  @@index([book, division])
-  @@index([book, division, chapter])
-  @@map("verses")
-}
-
-// ---------------------------------------------------------------------------
-// BookMeta — stores the intro.json data for each book
-//
-// The `data` field stores the entire intro JSON as a flexible JSON blob,
-// since BG/SB/CC each have different structures (chapters vs cantos vs lilas).
-// ---------------------------------------------------------------------------
-model BookMeta {
-  id   String @id @default(auto()) @map("_id") @db.ObjectId
-  book String @unique // "bg" | "sb" | "cc"
-  data Json
-
-  @@map("book_meta")
-}
-
-// ---------------------------------------------------------------------------
-// ProseChapter — for prose books like Kṛṣṇa Book (no verse structure)
-//
-// book: "kb"
-// volume: volume number (1 or 2 for KB)
-// chapter: chapter number within the volume
-// title: chapter title
-// type: "chapter" | "intro-segment"
-// slug: URL-friendly identifier (e.g. "01", "preface", "words-from-apple")
-// order: sort order (chapter number for chapters, custom for intro segments)
-// paragraphs: array of HTML paragraph strings
-// ---------------------------------------------------------------------------
-model ProseChapter {
-  id         String   @id @default(auto()) @map("_id") @db.ObjectId
-  book       String   // "kb"
-  volume     Int
-  chapter    Int?     // null for intro segments
-  title      String
-  type       String   // "chapter" | "intro-segment"
-  slug       String
-  order      Int
-  paragraphs String[]
-
-  @@unique([book, volume, slug])
-  @@index([book])
-  @@index([book, volume])
-  @@index([book, volume, type])
-  @@map("prose_chapters")
-}
-
-// ---------------------------------------------------------------------------
-// Essay — standalone essays (not part of any book's chapter structure)
-//
-// slug: URL-friendly identifier (e.g. "krishna-reservoir-of-pleasure")
-// title: essay title
-// author: author name
-// year: publication year
-// group: optional grouping key (e.g. "two-essays" for essays published together)
-// order: sort order within a group
-// paragraphs: array of HTML paragraph strings
-// ---------------------------------------------------------------------------
-model Essay {
-  id         String   @id @default(auto()) @map("_id") @db.ObjectId
-  slug       String   @unique
-  title      String
-  author     String
-  year       Int?
-  group      String?
-  order      Int
-  paragraphs String[]
-
-  @@index([group])
-  @@map("essays")
-}
-
-// ---------------------------------------------------------------------------
-// OtherDocumentMeta — metadata for miscellaneous documents
-//
-// book: slug identifier (e.g. "analysis-bg", "real-peace-formula")
-// data: JSON blob containing title, author, year, description, chapters list
-// ---------------------------------------------------------------------------
-model OtherDocumentMeta {
-  id   String @id @default(auto()) @map("_id") @db.ObjectId
-  book String @unique
-  data Json
-
-  @@map("other_document_meta")
-}
-
-// ---------------------------------------------------------------------------
-// OtherDocumentChapter — chapters within other documents
-//
-// book: slug identifier matching OtherDocumentMeta.book
-// chapter: chapter number
-// title: chapter title
-// type: "chapter"
-// slug: URL-friendly identifier (chapter number as string)
-// order: sort order
-// paragraphs: array of HTML paragraph strings
-// ---------------------------------------------------------------------------
-model OtherDocumentChapter {
-  id         String   @id @default(auto()) @map("_id") @db.ObjectId
-  book       String
-  chapter    Int
-  title      String
-  type       String
-  slug       String
-  order      Int
-  paragraphs String[]
-
-  @@unique([book, slug])
-  @@index([book])
-  @@map("other_document_chapters")
-}
-
-// ---------------------------------------------------------------------------
-// JournalMeta — metadata for journals (Jaladuta Diary, The Beginning, etc.)
-//
-// book: slug identifier (e.g. "jaladuta-diary", "the-beginning")
-// data: JSON blob containing title, author, year, description, chapters list
-// ---------------------------------------------------------------------------
-model JournalMeta {
-  id   String @id @default(auto()) @map("_id") @db.ObjectId
-  book String @unique
-  data Json
-
-  @@map("journal_meta")
-}
-
-// ---------------------------------------------------------------------------
-// JournalChapter — chapters within journals
-//
-// book: slug identifier matching JournalMeta.book
-// chapter: chapter number
-// title: chapter title
-// type: "chapter" | "preface" | "introduction"
-// slug: URL-friendly identifier (chapter number as string)
-// order: sort order
-// paragraphs: array of HTML paragraph strings
-// ---------------------------------------------------------------------------
-model JournalChapter {
-  id         String   @id @default(auto()) @map("_id") @db.ObjectId
-  book       String
-  chapter    Int
-  title      String
-  type       String
-  slug       String
-  order      Int
-  paragraphs String[]
-
-  @@unique([book, slug])
-  @@index([book])
-  @@map("journal_chapters")
-}
-
-// ---------------------------------------------------------------------------
-// MagazineMeta — metadata for magazines (Back to Godhead, etc.)
-//
-// book: slug identifier (e.g. "btg")
-// data: JSON blob containing title, author, description, volumes/issues list
-// ---------------------------------------------------------------------------
-model MagazineMeta {
-  id   String @id @default(auto()) @map("_id") @db.ObjectId
-  book String @unique
-  data Json
-
-  @@map("magazine_meta")
-}
-
-// ---------------------------------------------------------------------------
-// MagazineIssue — individual issues within a magazine
-//
-// book: slug identifier matching MagazineMeta.book
-// volume: volume number
-// part: part/issue number within the volume
-// title: display title (e.g. "Volume 3, Part 5, May 5, 1956")
-// slug: URL-friendly identifier (e.g. "v3-p5")
-// order: sort order
-// paragraphs: array of HTML paragraph strings (all articles concatenated)
-// ---------------------------------------------------------------------------
-model MagazineIssue {
-  id         String   @id @default(auto()) @map("_id") @db.ObjectId
-  book       String
-  volume     Int?
-  part       Int
-  title      String
-  slug       String
-  order      Int
-  paragraphs String[]
-
-  @@unique([book, slug])
-  @@index([book])
-  @@index([book, volume])
-  @@map("magazine_issues")
-}
-
-// ---------------------------------------------------------------------------
-// GlossaryEntry — individual glossary term + definition
-// ---------------------------------------------------------------------------
-// ---------------------------------------------------------------------------
-// Letter — individual letters written by Śrīla Prabhupāda
-//
-// slug: unique identifier (e.g. "47-07-12-mahatma-gandhi", "68-01-15-hayagriva")
-// recipients: array of individual recipient names (split from comma-separated)
-// recipientDisplay: original recipient string for display (e.g. "Mukunda, Janaki")
-// date: date string as written (e.g. "12 July, 1947")
-// dateRef: reference code (e.g. "47-07-12")
-// year: extracted year number for filtering/grouping
-// month: extracted month number (1-12) for filtering
-// day: extracted day number for filtering
-// location: city/place where the letter was written
-// salutation: the "Dear..." line
-// paragraphs: array of HTML paragraph strings (letter body)
-// ---------------------------------------------------------------------------
-model Letter {
-  id               String   @id @default(auto()) @map("_id") @db.ObjectId
-  slug             String   @unique
-  recipients       String[]
-  recipientDisplay String
-  date             String?
-  dateRef          String?
-  year             Int?
-  month            Int?
-  day              Int?
-  location         String?
-  salutation       String?
-  paragraphs       String[]
-
-  @@index([year])
-  @@index([recipients])
-  @@index([location])
-  @@index([year, month])
-  @@map("letters")
-}
-
-model GlossaryEntry {
-  id             String @id @default(auto()) @map("_id") @db.ObjectId
-  term           String
-  definition     String
-  definitionHtml String
-
-  @@unique([term])
-  @@map("glossary")
-}
-
-// ---------------------------------------------------------------------------
-// Disciple — disciples initiated by Śrīla Prabhupāda
-//
-// initiatedName: spiritual name given at initiation (e.g. "Acyutananda")
-// suffix: initiation suffix (e.g. "Dasa", "Devi Dasi", "Sw")
-// initiationDate: date of initiation (set to 1st of the month when exact day unknown)
-// initiationPlace: place of initiation (e.g. "New York", "London")
-// karmiName: pre-initiation (birth) name, if known
-// avatar: URL to profile photo, if available
-// about: biographical notes
-// tags: array of tags for categorization
-// isVerified: whether the profile has been manually verified with exact dates etc.
-// notes: internal notes (not shown in UI)
-// verifiedBy: name/identifier of who verified this profile (not shown in UI)
-// ---------------------------------------------------------------------------
-model Disciple {
-  id              String    @id @default(auto()) @map("_id") @db.ObjectId
-  initiatedName   String
-  suffix          String
-  initiationDate  DateTime?
-  initiationPlace String?
-  karmiName       String?
-  avatar          String?
-  about           String?
-  tags            String[]
-  isVerified      Boolean   @default(false)
-  notes           String?
-  verifiedBy      String?
-
-  @@index([initiatedName])
-  @@index([initiationPlace])
-  @@index([initiationDate])
-  @@index([suffix])
-  @@index([tags])
-  @@map("disciples")
-}
-
-// ---------------------------------------------------------------------------
-// ContentBlock — embedded document for rich text content within transcriptions
-//
-// text: the actual text content (may contain inline HTML for bold/italic)
-// format: formatting hint — "paragraph" | "heading" | "quote" | "verse" | "note"
-// alignment: text alignment — "left" | "center" | "right" (default: left)
-// speaker: who is speaking this block (for dialogues — e.g., "Prabhupāda", "Devotee")
-// ---------------------------------------------------------------------------
-type ContentBlock {
-  text      String
-  format    String   @default("paragraph")
-  alignment String   @default("left")
-  speaker   String?
-}
-
-// ---------------------------------------------------------------------------
-// Transcription — lectures and conversations of Śrīla Prabhupāda
-//
-// slug: URL-friendly unique identifier (e.g., "720911-lecture-los-angeles")
-// name: display title (e.g., "Lecture on Bhagavad-gītā 2.13")
-// type: "lecture" | "conversation"
-// date: date of the transcription
-// year: extracted year for filtering/grouping
-// month: extracted month (1-12) for filtering
-// day: extracted day for filtering
-// place: location where it was delivered (e.g., "Los Angeles", "Vṛndāvana")
-// context: additional context (e.g., "Morning Walk", "Room Conversation", "Arrival Address")
-// reference: scripture reference if applicable (e.g., "BG 2.13", "SB 1.2.6")
-// summary: brief description of the content (for OG images, search results)
-// content: array of ContentBlock embedded documents (the actual transcription)
-// tags: array of tags for categorization (e.g., ["science", "reincarnation", "guru"])
-// participants: array of named participants (e.g., ["Prabhupāda", "Bob Cohen", "Śyāmasundara"])
-// language: primary language of the transcription (default: "en")
-// source: origin of the transcription (e.g., "Vedabase", "BBT Archives")
-// durationMinutes: approximate duration in minutes (if known)
-// isPublished: whether the transcription is ready for public display
-// notes: internal editorial notes (not shown in UI)
-// ---------------------------------------------------------------------------
-model Transcription {
-  id              String         @id @default(auto()) @map("_id") @db.ObjectId
-  slug            String         @unique
-  name            String
-  type            String         // "lecture" | "conversation"
-  date            String?        // date as written (e.g., "September 11, 1972")
-  year            Int?
-  month           Int?
-  day             Int?
-  place           String?
-  context         String?
-  reference       String?
-  summary         String?
-  content         ContentBlock[]
-  tags            String[]
-  participants    String[]
-  language        String         @default("en")
-  source          String?
-  durationMinutes Int?
-  audioUrl        String?
-  isPublished     Boolean        @default(false)
-  notes           String?
-
-  @@index([type])
-  @@index([year])
-  @@index([year, month])
-  @@index([place])
-  @@index([tags])
-  @@index([reference])
-  @@index([participants])
-  @@index([isPublished])
-  @@map("transcriptions")
-}
diff --git a/yarn.lock b/yarn.lock
index 5c2c04ee..ff140402 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7,557 +7,6 @@
   resolved "https://registry.npmjs.org/@alloc/quick-lru/-/quick-lru-5.2.0.tgz"
   integrity sha512-UrcABB+4bUrFABwbluTIBErXwvbsU/V7TZWfmbgJfbkwiBuziS9gxdODUyuiecfdGQ85jglMW6juS3+z5TsKLw==
 
-"@aws-crypto/crc32@5.2.0":
-  version "5.2.0"
-  resolved "https://registry.npmjs.org/@aws-crypto/crc32/-/crc32-5.2.0.tgz"
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-  resolved "https://registry.npmjs.org/@smithy/util-waiter/-/util-waiter-4.4.0.tgz"
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-
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-  resolved "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz"
-  integrity sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w==
-
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   version "0.5.15"
   resolved "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz"
@@ -2230,18 +1271,6 @@
   resolved "https://registry.npmjs.org/@types/validate-npm-package-name/-/validate-npm-package-name-4.0.2.tgz"
   integrity sha512-lrpDziQipxCEeK5kWxvljWYhUvOiB2A9izZd9B2AFarYAkqZshb4lPbRs7zKEic6eGtH8V/2qJW+dPp9OtF6bw==
 
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-  version "7.0.3"
-  resolved "https://registry.npmjs.org/@types/webidl-conversions/-/webidl-conversions-7.0.3.tgz"
-  integrity sha512-CiJJvcRtIgzadHCYXw7dqEnMNRjhGZlYK05Mj9OyktqV8uVT8fD2BFOB7S1uwBE3Kj2Z+4UyPmFw/Ixgw/LAlA==
-
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-  version "13.0.0"
-  resolved "https://registry.npmjs.org/@types/whatwg-url/-/whatwg-url-13.0.0.tgz"
-  integrity sha512-N8WXpbE6Wgri7KUSvrmQcqrMllKZ9uxkYWMt+mCSGwNc0Hsw9VQTW7ApqI4XNrx6/SaM2QQJCzMPDEXE058s+Q==
-  dependencies:
-    "@types/webidl-conversions" "*"
-
 "@typescript-eslint/eslint-plugin@8.58.0":
   version "8.58.0"
   resolved "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.58.0.tgz"
@@ -2674,11 +1703,6 @@ body-parser@^2.2.1:
     raw-body "^3.0.1"
     type-is "^2.0.1"
 
-bowser@^2.11.0:
-  version "2.14.1"
-  resolved "https://registry.npmjs.org/bowser/-/bowser-2.14.1.tgz"
-  integrity sha512-tzPjzCxygAKWFOJP011oxFHs57HzIhOEracIgAePE4pqB3LikALKnSzUyU4MGs9/iCEUuHlAJTjTc5M+u7YEGg==
-
 brace-expansion@^1.1.7:
   version "1.1.13"
   resolved "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.13.tgz"
@@ -2712,11 +1736,6 @@ browserslist@^4.24.0, browserslist@^4.26.2:
     node-releases "^2.0.36"
     update-browserslist-db "^1.2.3"
 
-bson@^7.1.1:
-  version "7.2.0"
-  resolved "https://registry.npmjs.org/bson/-/bson-7.2.0.tgz"
-  integrity sha512-YCEo7KjMlbNlyHhz7zAZNDpIpQbd+wOEHJYezv0nMYTn4x31eIUM2yomNNubclAt63dObUzKHWsBLJ9QcZNSnQ==
-
 bundle-name@^4.1.0:
   version "4.1.0"
   resolved "https://registry.npmjs.org/bundle-name/-/bundle-name-4.1.0.tgz"
@@ -2729,24 +1748,6 @@ bytes@^3.1.2, bytes@~3.1.2:
   resolved "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz"
   integrity sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg==
 
-c12@3.1.0:
-  version "3.1.0"
-  resolved "https://registry.npmjs.org/c12/-/c12-3.1.0.tgz"
-  integrity sha512-uWoS8OU1MEIsOv8p/5a82c3H31LsWVR5qiyXVfBNOzfffjUWtPnhAb4BYI2uG2HfGmZmFjCtui5XNWaps+iFuw==
-  dependencies:
-    chokidar "^4.0.3"
-    confbox "^0.2.2"
-    defu "^6.1.4"
-    dotenv "^16.6.1"
-    exsolve "^1.0.7"
-    giget "^2.0.0"
-    jiti "^2.4.2"
-    ohash "^2.0.11"
-    pathe "^2.0.3"
-    perfect-debounce "^1.0.0"
-    pkg-types "^2.2.0"
-    rc9 "^2.1.2"
-
 call-bind-apply-helpers@^1.0.0, call-bind-apply-helpers@^1.0.1, call-bind-apply-helpers@^1.0.2:
   version "1.0.2"
   resolved "https://registry.npmjs.org/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz"
@@ -2796,25 +1797,6 @@ chalk@^5.3.0:
   resolved "https://registry.npmjs.org/chalk/-/chalk-5.6.2.tgz"
   integrity sha512-7NzBL0rN6fMUW+f7A6Io4h40qQlG+xGmtMxfbnH/K7TAtt8JQWVQK+6g0UXKMeVJoyV5EkkNsErQ8pVD3bLHbA==
 
-chokidar@^4.0.3:
-  version "4.0.3"
-  resolved "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz"
-  integrity sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==
-  dependencies:
-    readdirp "^4.0.1"
-
-citty@^0.1.6:
-  version "0.1.6"
-  resolved "https://registry.npmjs.org/citty/-/citty-0.1.6.tgz"
-  integrity sha512-tskPPKEs8D2KPafUypv2gxwJP8h/OaJmC82QQGGDQcHvXX43xF2VDACcJVmZ0EuSxkpO9Kc4MlrA3q0+FG58AQ==
-  dependencies:
-    consola "^3.2.3"
-
-citty@^0.2.0:
-  version "0.2.2"
-  resolved "https://registry.npmjs.org/citty/-/citty-0.2.2.tgz"
-  integrity sha512-+6vJA3L98yv+IdfKGZHBNiGW5KHn22e/JwID0Strsz8h4S/csAu/OuICwxrg44k5MRiZHWIo8XXuJgQTriRP4w==
-
 class-variance-authority@^0.7.1:
   version "0.7.1"
   resolved "https://registry.npmjs.org/class-variance-authority/-/class-variance-authority-0.7.1.tgz"
@@ -2890,16 +1872,6 @@ concat-map@0.0.1:
   resolved "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz"
   integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
-confbox@^0.2.2:
-  version "0.2.4"
-  resolved "https://registry.npmjs.org/confbox/-/confbox-0.2.4.tgz"
-  integrity sha512-ysOGlgTFbN2/Y6Cg3Iye8YKulHw+R2fNXHrgSmXISQdMnomY6eNDprVdW9R5xBguEqI954+S6709UyiO7B+6OQ==
-
-consola@^3.2.3, consola@^3.4.0:
-  version "3.4.2"
-  resolved "https://registry.npmjs.org/consola/-/consola-3.4.2.tgz"
-  integrity sha512-5IKcdX0nnYavi6G7TtOhwkYzyjfJlatbjMjuLSfE2kYT5pMDOilZ4OvMhi637CcDICTmz3wARPoyhqyX1Y+XvA==
-
 content-disposition@^1.0.0:
   version "1.1.0"
   resolved "https://registry.npmjs.org/content-disposition/-/content-disposition-1.1.0.tgz"
@@ -3028,11 +2000,6 @@ deep-is@^0.1.3:
   resolved "https://registry.npmjs.org/deep-is/-/deep-is-0.1.4.tgz"
   integrity sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==
 
-deepmerge-ts@7.1.5:
-  version "7.1.5"
-  resolved "https://registry.npmjs.org/deepmerge-ts/-/deepmerge-ts-7.1.5.tgz"
-  integrity sha512-HOJkrhaYsweh+W+e74Yn7YStZOilkoPb6fycpwNLKzSPtruFs48nYis0zy5yJz1+ktUhHxoRDJ27RQAWLIJVJw==
-
 deepmerge@^4.3.1:
   version "4.3.1"
   resolved "https://registry.npmjs.org/deepmerge/-/deepmerge-4.3.1.tgz"
@@ -3074,21 +2041,11 @@ define-properties@^1.1.3, define-properties@^1.2.1:
     has-property-descriptors "^1.0.0"
     object-keys "^1.1.1"
 
-defu@^6.1.4:
-  version "6.1.7"
-  resolved "https://registry.npmjs.org/defu/-/defu-6.1.7.tgz"
-  integrity sha512-7z22QmUWiQ/2d0KkdYmANbRUVABpZ9SNYyH5vx6PZ+nE5bcC0l7uFvEfHlyld/HcGBFTL536ClDt3DEcSlEJAQ==
-
 depd@^2.0.0, depd@~2.0.0:
   version "2.0.0"
   resolved "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz"
   integrity sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==
 
-destr@^2.0.3:
-  version "2.0.5"
-  resolved "https://registry.npmjs.org/destr/-/destr-2.0.5.tgz"
-  integrity sha512-ugFTXCtDZunbzasqBxrK93Ik/DRYsO6S/fedkWEMKqt04xZ4csmnmwGDBAb07QWNaGMAmnTIemsYZCksjATwsA==
-
 detect-libc@^2.0.3, detect-libc@^2.1.2:
   version "2.1.2"
   resolved "https://registry.npmjs.org/detect-libc/-/detect-libc-2.1.2.tgz"
@@ -3111,12 +2068,7 @@ doctrine@^2.1.0:
   dependencies:
     esutils "^2.0.2"
 
-dotenv@^16.6.1:
-  version "16.6.1"
-  resolved "https://registry.npmjs.org/dotenv/-/dotenv-16.6.1.tgz"
-  integrity sha512-uBq4egWHTcTt33a72vpSG0z3HnPuIl6NqYcTrKEg2azoEyl2hpW0zqlxysq2pK9HlDIHyHyakeYaYnSAwd8bow==
-
-dotenv@^17.2.1, dotenv@^17.4.2:
+dotenv@^17.2.1:
   version "17.4.2"
   resolved "https://registry.npmjs.org/dotenv/-/dotenv-17.4.2.tgz"
   integrity sha512-nI4U3TottKAcAD9LLud4Cb7b2QztQMUEfHbvhTH09bqXTxnSie8WnjPALV/WMCrJZ6UV/qHJ6L03OqO3LcdYZw==
@@ -3145,14 +2097,6 @@ ee-first@1.1.1:
   resolved "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz"
   integrity sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow==
 
-effect@3.21.0:
-  version "3.21.0"
-  resolved "https://registry.npmjs.org/effect/-/effect-3.21.0.tgz"
-  integrity sha512-PPN80qRokCd1f015IANNhrwOnLO7GrrMQfk4/lnZRE/8j7UPWrNNjPV0uBrZutI/nHzernbW+J0hdqQysHiSnQ==
-  dependencies:
-    "@standard-schema/spec" "^1.0.0"
-    fast-check "^3.23.1"
-
 electron-to-chromium@^1.5.328:
   version "1.5.331"
   resolved "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.331.tgz"
@@ -3173,11 +2117,6 @@ emoji-regex@^9.2.2:
   resolved "https://registry.npmjs.org/emoji-regex/-/emoji-regex-9.2.2.tgz"
   integrity sha512-L18DaJsXSUk2+42pv8mLs5jJT2hqFkFE4j21wOmgbUqsZ2hL72NsUU785g9RXgo3s0ZNgVl42TiHp3ZtOv/Vyg==
 
-empathic@2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/empathic/-/empathic-2.0.0.tgz"
-  integrity sha512-i6UzDscO/XfAcNYD75CfICkmfLedpyPDdozrLMmQc5ORaQcdMoc21OnlEylMIqI7U8eniKrPMxxtj8k0vhmJhA==
-
 encodeurl@^2.0.0:
   version "2.0.0"
   resolved "https://registry.npmjs.org/encodeurl/-/encodeurl-2.0.0.tgz"
@@ -3693,18 +2632,6 @@ express@^5.2.1:
     type-is "^2.0.1"
     vary "^1.1.2"
 
-exsolve@^1.0.7:
-  version "1.0.8"
-  resolved "https://registry.npmjs.org/exsolve/-/exsolve-1.0.8.tgz"
-  integrity sha512-LmDxfWXwcTArk8fUEnOfSZpHOJ6zOMUJKOtFLFqJLoKJetuQG874Uc7/Kki7zFLzYybmZhp1M7+98pfMqeX8yA==
-
-fast-check@^3.23.1:
-  version "3.23.2"
-  resolved "https://registry.npmjs.org/fast-check/-/fast-check-3.23.2.tgz"
-  integrity sha512-h5+1OzzfCC3Ef7VbtKdcv7zsstUQwUDlYpUTvjeUsJAssPgLn7QzbboPtL5ro04Mq0rPOsMzl7q5hIbRs2wD1A==
-  dependencies:
-    pure-rand "^6.1.0"
-
 fast-deep-equal@^3.1.1, fast-deep-equal@^3.1.3:
   version "3.1.3"
   resolved "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz"
@@ -3747,24 +2674,6 @@ fast-uri@^3.0.1:
   resolved "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.0.tgz"
   integrity sha512-iPeeDKJSWf4IEOasVVrknXpaBV0IApz/gp7S2bb7Z4Lljbl2MGJRqInZiUrQwV16cpzw/D3S5j5Julj/gT52AA==
 
-fast-xml-builder@^1.1.5:
-  version "1.2.0"
-  resolved "https://registry.npmjs.org/fast-xml-builder/-/fast-xml-builder-1.2.0.tgz"
-  integrity sha512-00aAWieqff+ZJhsXA4g1g7M8k+7AYoMUUHF+/zFb5U6Uv/P0Vl4QZo84/IcufzYalLuEj9928bXN9PbbFzMF0Q==
-  dependencies:
-    path-expression-matcher "^1.5.0"
-    xml-naming "^0.1.0"
-
-fast-xml-parser@5.7.2:
-  version "5.7.2"
-  resolved "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-5.7.2.tgz"
-  integrity sha512-P7oW7tLbYnhOLQk/Gv7cZgzgMPP/XN03K02/Jy6Y/NHzyIAIpxuZIM/YqAkfiXFPxA2CTm7NtCijK9EDu09u2w==
-  dependencies:
-    "@nodable/entities" "^2.1.0"
-    fast-xml-builder "^1.1.5"
-    path-expression-matcher "^1.5.0"
-    strnum "^2.2.3"
-
 fastq@^1.6.0:
   version "1.20.1"
   resolved "https://registry.npmjs.org/fastq/-/fastq-1.20.1.tgz"
@@ -3996,18 +2905,6 @@ get-tsconfig@^4.10.0, get-tsconfig@^4.7.5:
   dependencies:
     resolve-pkg-maps "^1.0.0"
 
-giget@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/giget/-/giget-2.0.0.tgz"
-  integrity sha512-L5bGsVkxJbJgdnwyuheIunkGatUF/zssUoxxjACCseZYAVbaqdh9Tsmmlkl8vYan09H7sbvKt4pS8GqKLBrEzA==
-  dependencies:
-    citty "^0.1.6"
-    consola "^3.4.0"
-    defu "^6.1.4"
-    node-fetch-native "^1.6.6"
-    nypm "^0.6.0"
-    pathe "^2.0.3"
-
 glob-parent@^5.1.2:
   version "5.1.2"
   resolved "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz"
@@ -4504,7 +3401,7 @@ iterator.prototype@^1.1.5:
     has-symbols "^1.1.0"
     set-function-name "^2.0.2"
 
-jiti@^2.4.2, jiti@^2.6.1:
+jiti@^2.6.1:
   version "2.6.1"
   resolved "https://registry.npmjs.org/jiti/-/jiti-2.6.1.tgz"
   integrity sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ==
@@ -4764,11 +3661,6 @@ media-typer@^1.1.0:
   resolved "https://registry.npmjs.org/media-typer/-/media-typer-1.1.0.tgz"
   integrity sha512-aisnrDP4GNe06UcKFnV5bfMNPBUw4jsLGaWwWfnH3v02GnBuXX2MCVn5RbrWo0j3pczUilYblq7fQ7Nw2t5XKw==
 
-memory-pager@^1.0.2:
-  version "1.5.0"
-  resolved "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz"
-  integrity sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==
-
 merge-descriptors@^2.0.0:
   version "2.0.0"
   resolved "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-2.0.0.tgz"
@@ -4833,23 +3725,6 @@ minimist@^1.2.0, minimist@^1.2.6:
   resolved "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz"
   integrity sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==
 
-mongodb-connection-string-url@^7.0.0:
-  version "7.0.1"
-  resolved "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-7.0.1.tgz"
-  integrity sha512-h0AZ9A7IDVwwHyMxmdMXKy+9oNlF0zFoahHiX3vQ8e3KFcSP3VmsmfvtRSuLPxmyv2vjIDxqty8smTgie/SNRQ==
-  dependencies:
-    "@types/whatwg-url" "^13.0.0"
-    whatwg-url "^14.1.0"
-
-mongodb@^7.1.1:
-  version "7.1.1"
-  resolved "https://registry.npmjs.org/mongodb/-/mongodb-7.1.1.tgz"
-  integrity sha512-067DXiMjcpYQl6bGjWQoTUEE9UoRViTtKFcoqX7z08I+iDZv/emH1g8XEFiO3qiDfXAheT5ozl1VffDTKhIW/w==
-  dependencies:
-    "@mongodb-js/saslprep" "^1.3.0"
-    bson "^7.1.1"
-    mongodb-connection-string-url "^7.0.0"
-
 motion-dom@^12.38.0:
   version "12.38.0"
   resolved "https://registry.yarnpkg.com/motion-dom/-/motion-dom-12.38.0.tgz#9ef3253ea0fb28b6757588327073848d940e9aab"
@@ -4958,11 +3833,6 @@ node-exports-info@^1.6.0:
     object.entries "^1.1.9"
     semver "^6.3.1"
 
-node-fetch-native@^1.6.6:
-  version "1.6.7"
-  resolved "https://registry.npmjs.org/node-fetch-native/-/node-fetch-native-1.6.7.tgz"
-  integrity sha512-g9yhqoedzIUm0nTnTqAQvueMPVOuIY16bqgAJJC8XOOubYFNwz6IER9qs0Gq2Xd0+CecCKFjtdDTMA4u4xG06Q==
-
 node-fetch@^3.3.2:
   version "3.3.2"
   resolved "https://registry.npmjs.org/node-fetch/-/node-fetch-3.3.2.tgz"
@@ -4992,15 +3862,6 @@ npm-run-path@^6.0.0:
     path-key "^4.0.0"
     unicorn-magic "^0.3.0"
 
-nypm@^0.6.0:
-  version "0.6.5"
-  resolved "https://registry.npmjs.org/nypm/-/nypm-0.6.5.tgz"
-  integrity sha512-K6AJy1GMVyfyMXRVB88700BJqNUkByijGJM8kEHpLdcAt+vSQAVfkWWHYzuRXHSY6xA2sNc5RjTj0p9rE2izVQ==
-  dependencies:
-    citty "^0.2.0"
-    pathe "^2.0.3"
-    tinyexec "^1.0.2"
-
 object-assign@^4, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz"
@@ -5072,11 +3933,6 @@ object.values@^1.1.6, object.values@^1.2.1:
     define-properties "^1.2.1"
     es-object-atoms "^1.0.0"
 
-ohash@^2.0.11:
-  version "2.0.11"
-  resolved "https://registry.npmjs.org/ohash/-/ohash-2.0.11.tgz"
-  integrity sha512-RdR9FQrFwNBNXAr4GixM8YaRZRJ5PUWbKYbE5eOsrwAjJW0q2REGcf79oYPsLyskQCZG1PLN+S/K1V00joZAoQ==
-
 on-finished@^2.4.1:
   version "2.4.1"
   resolved "https://registry.npmjs.org/on-finished/-/on-finished-2.4.1.tgz"
@@ -5209,11 +4065,6 @@ path-exists@^4.0.0:
   resolved "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz"
   integrity sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==
 
-path-expression-matcher@^1.5.0:
-  version "1.5.0"
-  resolved "https://registry.npmjs.org/path-expression-matcher/-/path-expression-matcher-1.5.0.tgz"
-  integrity sha512-cbrerZV+6rvdQrrD+iGMcZFEiiSrbv9Tfdkvnusy6y0x0GKBXREFg/Y65GhIfm0tnLntThhzCnfKwp1WRjeCyQ==
-
 path-key@^3.0.0, path-key@^3.1.0:
   version "3.1.1"
   resolved "https://registry.npmjs.org/path-key/-/path-key-3.1.1.tgz"
@@ -5239,16 +4090,6 @@ path-to-regexp@^8.0.0:
   resolved "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.4.2.tgz"
   integrity sha512-qRcuIdP69NPm4qbACK+aDogI5CBDMi1jKe0ry5rSQJz8JVLsC7jV8XpiJjGRLLol3N+R5ihGYcrPLTno6pAdBA==
 
-pathe@^2.0.3:
-  version "2.0.3"
-  resolved "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz"
-  integrity sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==
-
-perfect-debounce@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.npmjs.org/perfect-debounce/-/perfect-debounce-1.0.0.tgz"
-  integrity sha512-xCy9V055GLEqoFaHoC1SoLIaLmWctgCUaBaWxDZ7/Zx4CTyX7cJQLJOok/orfjZAh9kEYpjJa4d0KcJmCbctZA==
-
 picocolors@^1.0.0, picocolors@^1.1.1:
   version "1.1.1"
   resolved "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz"
@@ -5269,15 +4110,6 @@ pkce-challenge@^5.0.0:
   resolved "https://registry.npmjs.org/pkce-challenge/-/pkce-challenge-5.0.1.tgz"
   integrity sha512-wQ0b/W4Fr01qtpHlqSqspcj3EhBvimsdh0KlHhH8HRZnMsEa0ea2fTULOXOS9ccQr3om+GcGRk4e+isrZWV8qQ==
 
-pkg-types@^2.2.0:
-  version "2.3.0"
-  resolved "https://registry.npmjs.org/pkg-types/-/pkg-types-2.3.0.tgz"
-  integrity sha512-SIqCzDRg0s9npO5XQ3tNZioRY1uK06lA41ynBC1YmFTmnY6FjUjVt6s4LoADmwoig1qqD0oK8h1p/8mlMx8Oig==
-  dependencies:
-    confbox "^0.2.2"
-    exsolve "^1.0.7"
-    pathe "^2.0.3"
-
 possible-typed-array-names@^1.0.0:
   version "1.1.0"
   resolved "https://registry.npmjs.org/possible-typed-array-names/-/possible-typed-array-names-1.1.0.tgz"
@@ -5326,14 +4158,6 @@ pretty-ms@^9.2.0:
   dependencies:
     parse-ms "^4.0.0"
 
-prisma@^6.19.3:
-  version "6.19.3"
-  resolved "https://registry.npmjs.org/prisma/-/prisma-6.19.3.tgz"
-  integrity sha512-++ZJ0ijLrDJF6hNB4t4uxg2br3fC4H9Yc9tcbjr2fcNFP3rh/SBNrAgjhsqBU4Ght8JPrVofG/ZkXfnSfnYsFg==
-  dependencies:
-    "@prisma/config" "6.19.3"
-    "@prisma/engines" "6.19.3"
-
 prompts@^2.4.2:
   version "2.4.2"
   resolved "https://registry.npmjs.org/prompts/-/prompts-2.4.2.tgz"
@@ -5359,16 +4183,11 @@ proxy-addr@^2.0.7:
     forwarded "0.2.0"
     ipaddr.js "1.9.1"
 
-punycode@^2.1.0, punycode@^2.3.1:
+punycode@^2.1.0:
   version "2.3.1"
   resolved "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz"
   integrity sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg==
 
-pure-rand@^6.1.0:
-  version "6.1.0"
-  resolved "https://registry.npmjs.org/pure-rand/-/pure-rand-6.1.0.tgz"
-  integrity sha512-bVWawvoZoBYpp6yIoQtQXHZjmz35RSVHnUOTefl8Vcjr8snTPY1wnpSPMWekcFwbxI6gtmT7rSYPFvz71ldiOA==
-
 qs@^6.14.0, qs@^6.14.1:
   version "6.15.1"
   resolved "https://registry.npmjs.org/qs/-/qs-6.15.1.tgz"
@@ -5396,14 +4215,6 @@ raw-body@^3.0.0, raw-body@^3.0.1:
     iconv-lite "~0.7.0"
     unpipe "~1.0.0"
 
-rc9@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.npmjs.org/rc9/-/rc9-2.1.2.tgz"
-  integrity sha512-btXCnMmRIBINM2LDZoEmOogIZU7Qe7zn4BpomSKZ/ykbLObuBdvG+mFq11DL6fjH1DRwHhrlgtYWG96bJiC7Cg==
-  dependencies:
-    defu "^6.1.4"
-    destr "^2.0.3"
-
 react-dom@19.2.4:
   version "19.2.4"
   resolved "https://registry.npmjs.org/react-dom/-/react-dom-19.2.4.tgz"
@@ -5448,11 +4259,6 @@ react@19.2.4:
   resolved "https://registry.npmjs.org/react/-/react-19.2.4.tgz"
   integrity sha512-9nfp2hYpCwOjAN+8TZFGhtWEwgvWHXqESH8qT89AT/lWklpLON22Lc8pEtnpsZz7VmawabSU0gCjnj8aC0euHQ==
 
-readdirp@^4.0.1:
-  version "4.1.2"
-  resolved "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz"
-  integrity sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==
-
 recast@^0.23.11:
   version "0.23.11"
   resolved "https://registry.npmjs.org/recast/-/recast-0.23.11.tgz"
@@ -5830,13 +4636,6 @@ source-map@~0.6.1:
   resolved "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
-sparse-bitfield@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz"
-  integrity sha512-kvzhi7vqKTfkh0PZU+2D2PIllw2ymqJKujUcyPMd9Y75Nv4nPbGJZXNhxsgdQab2BmlDct1YnfQCguEvHr7VsQ==
-  dependencies:
-    memory-pager "^1.0.2"
-
 stable-hash@^0.0.5:
   version "0.0.5"
   resolved "https://registry.npmjs.org/stable-hash/-/stable-hash-0.0.5.tgz"
@@ -5994,11 +4793,6 @@ strip-json-comments@^3.1.1:
   resolved "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz"
   integrity sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==
 
-strnum@^2.2.3:
-  version "2.3.0"
-  resolved "https://registry.npmjs.org/strnum/-/strnum-2.3.0.tgz"
-  integrity sha512-ums3KNd42PGyx5xaoVTO1mjU1bH3NpY4vsrVlnv9PNGqQj8wd7rJ6nEypLrJ7z5vxK5RP0yMLo6J/Gsm62DI5Q==
-
 styled-jsx@5.1.6:
   version "5.1.6"
   resolved "https://registry.npmjs.org/styled-jsx/-/styled-jsx-5.1.6.tgz"
@@ -6043,11 +4837,6 @@ tiny-invariant@^1.3.3:
   resolved "https://registry.npmjs.org/tiny-invariant/-/tiny-invariant-1.3.3.tgz"
   integrity sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==
 
-tinyexec@^1.0.2:
-  version "1.1.1"
-  resolved "https://registry.npmjs.org/tinyexec/-/tinyexec-1.1.1.tgz"
-  integrity sha512-VKS/ZaQhhkKFMANmAOhhXVoIfBXblQxGX1myCQ2faQrfmobMftXeJPcZGp0gS07ocvGJWDLZGyOZDadDBqYIJg==
-
 tinyglobby@^0.2.13, tinyglobby@^0.2.15:
   version "0.2.15"
   resolved "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz"
@@ -6087,13 +4876,6 @@ tough-cookie@^6.0.0:
   dependencies:
     tldts "^7.0.5"
 
-tr46@^5.1.0:
-  version "5.1.1"
-  resolved "https://registry.npmjs.org/tr46/-/tr46-5.1.1.tgz"
-  integrity sha512-hdF5ZgjTqgAntKkklYw0R03MG2x/bSzTtkxmIRw/sTNV8YXsCJ1tfLAX23lhxhHJlEf3CRCOCGGWw3vI3GaSPw==
-  dependencies:
-    punycode "^2.3.1"
-
 ts-api-utils@^2.5.0:
   version "2.5.0"
   resolved "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz"
@@ -6126,7 +4908,7 @@ tsconfig-paths@^4.2.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-tslib@^2.0.0, tslib@^2.0.1, tslib@^2.1.0, tslib@^2.4.0, tslib@^2.6.2, tslib@^2.8.0, tslib@^2.8.1:
+tslib@^2.0.0, tslib@^2.0.1, tslib@^2.1.0, tslib@^2.4.0, tslib@^2.8.0, tslib@^2.8.1:
   version "2.8.1"
   resolved "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz"
   integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
@@ -6353,19 +5135,6 @@ web-streams-polyfill@^3.0.3:
   resolved "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz"
   integrity sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==
 
-webidl-conversions@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz"
-  integrity sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g==
-
-whatwg-url@^14.1.0:
-  version "14.2.0"
-  resolved "https://registry.npmjs.org/whatwg-url/-/whatwg-url-14.2.0.tgz"
-  integrity sha512-De72GdQZzNTUBBChsXueQUnPKDkg/5A5zp7pFDuQAj5UFoENpiACU0wlCvzpAGnTkj++ihpKwKyYewn/XNUbKw==
-  dependencies:
-    tr46 "^5.1.0"
-    webidl-conversions "^7.0.0"
-
 which-boxed-primitive@^1.1.0, which-boxed-primitive@^1.1.1:
   version "1.1.1"
   resolved "https://registry.npmjs.org/which-boxed-primitive/-/which-boxed-primitive-1.1.1.tgz"
@@ -6469,11 +5238,6 @@ wsl-utils@^0.3.0:
     is-wsl "^3.1.0"
     powershell-utils "^0.1.0"
 
-xml-naming@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.npmjs.org/xml-naming/-/xml-naming-0.1.0.tgz"
-  integrity sha512-k8KO9hrMyNk6tUWqUfkTEZbezRRpONVOzUTnc97VnCvyj6Tf9lyUR9EDAIeiVLv56jsMcoXEwjW8Kv5yPY52lw==
-
 y18n@^5.0.5:
   version "5.0.8"
   resolved "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz"