feat: add sb front matter

app/(app)/books/cc/[lila]/[chapter]/page.tsx

@@ -1,9 +1,26 @@
+export const dynamic = "force-dynamic";
+
 import type { Metadata } from "next";
-import { redirect } from "next/navigation";
-import { notFound } from "next/navigation";
-import { getChapterVerseIndex } from "@/lib/api";
+import Link from "next/link";
+import { redirect, notFound } from "next/navigation";
+import { ChevronRight } from "lucide-react";
+import { getBookMeta, getProseChapter, getChapterVerseIndex } from "@/lib/api";
 import { CC_LILAS } from "@/lib/constants";
 import { buildOgMeta } from "@/lib/og";
+import { PageHeader } from "@/components/layout/page-header";
+import { Card, CardContent } from "@/components/ui/card";
+import { buttonVariants } from "@/components/ui/button";
+import { FindInPage } from "@/components/layout/find-in-page";
+import { cn } from "@/lib/utils";
+
+type ChapterInfo = { number: number; title: string; totalVerses: number };
+type LilaInfo = {
+  key: string;
+  name: string;
+  totalChapters: number;
+  totalVerses: number;
+  chapters: ChapterInfo[];
+};
 
 export async function generateMetadata({
   params,
@@ -24,9 +41,73 @@ export default async function CcChapterPage({
   params: Promise<{ lila: string; chapter: string }>;
 }) {
   const { lila, chapter } = await params;
-  const verseIndex = await getChapterVerseIndex("cc", lila, parseInt(chapter));
-  if (verseIndex.length === 0) {
-    notFound();
+  const chapterNum = parseInt(chapter);
+
+  const [meta, summary, verseIndex] = await Promise.all([
+    getBookMeta("cc"),
+    getProseChapter("cc", 0, `${lila}-${chapterNum}`),
+    getChapterVerseIndex("cc", lila, chapterNum),
+  ]);
+
+  if (!meta) notFound();
+  const lilaInfo = (meta.lilas as LilaInfo[] | undefined)?.find(
+    (l) => l.key === lila,
+  );
+  if (!lilaInfo) notFound();
+  const chapterInfo = lilaInfo.chapters.find((ch) => ch.number === chapterNum);
+  if (!chapterInfo) notFound();
+  if (verseIndex.length === 0) notFound();
+
+  const firstVerse = verseIndex[0].verse;
+
+  // Chapters without a summary (e.g. Ādi 7) go straight to the verses.
+  if (!summary || summary.paragraphs.length === 0) {
+    redirect(`/books/cc/${lila}/${chapterNum}/${firstVerse}`);
   }
-  redirect(`/books/cc/${lila}/${chapter}/${verseIndex[0].verse}`);
+
+  return (
+    <div className="min-h-screen bg-background">
+      <PageHeader sticky>
+        <Link
+          href={`/books/cc/${lila}`}
+          className="text-sm text-muted-foreground hover:text-foreground transition-colors"
+        >
+          &larr; {lilaInfo.name}
+        </Link>
+        <div className="mt-3 flex items-start justify-between gap-3">
+          <h1 className="text-2xl font-bold text-foreground">
+            Chapter {chapterNum}: {chapterInfo.title}
+          </h1>
+          <FindInPage targetId="book-content" className="shrink-0 mt-0.5" />
+        </div>
+      </PageHeader>
+
+      <main className="max-w-5xl mx-auto px-6 py-8 space-y-6">
+        <p className="text-sm font-bold uppercase tracking-wider text-muted-foreground">
+          Chapter Summary
+        </p>
+        <Card id="book-content">
+          <CardContent className="py-8 px-6 sm:px-8">
+            <div className="space-y-4">
+              {summary.paragraphs.map((paragraph, i) => (
+                <div
+                  key={i}
+                  className="text-base text-foreground leading-relaxed"
+                  dangerouslySetInnerHTML={{ __html: paragraph }}
+                />
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+
+        <Link
+          href={`/books/cc/${lila}/${chapterNum}/${firstVerse}`}
+          className={cn(buttonVariants({ size: "lg" }), "gap-2")}
+        >
+          Read the chapter
+          <ChevronRight className="size-4" />
+        </Link>
+      </main>
+    </div>
+  );
 }