feat: add search in page for books, magazines and other docs

app/(app)/books/nbs/[chapter]/page.tsx

@@ -8,6 +8,7 @@ import { buildOgMeta } from "@/lib/og";
 import { BOOK_NAMES } from "@/lib/constants";
 import { Card, CardContent } from "@/components/ui/card";
 import { PageHeader } from "@/components/layout/page-header";
+import { FindInPage } from "@/components/layout/find-in-page";
 import Link from "next/link";
 import fs from "fs";
 import path from "path";
@@ -62,13 +63,16 @@ export default async function NbsChapterPage({
           >
             ← Nārada-bhakti-sūtra
           </Link>
-          <h1 className="mt-3 text-2xl font-bold text-foreground">
-            {segment.title}
-          </h1>
+          <div className="mt-3 flex items-start justify-between gap-3">
+            <h1 className="text-2xl font-bold text-foreground">
+              {segment.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">
-          <Card>
+          <Card id="book-content">
             <CardContent className="py-8 px-6 sm:px-8">
               <div className="space-y-4">
                 {segment.paragraphs.map((paragraph: string, i: number) => (