fix: og image generation

app/books/bk/[chapter]/page.tsx

@@ -1,3 +1,4 @@
+import type { Metadata } from "next";
 import Link from "next/link";
 import { notFound } from "next/navigation";
 import {
@@ -6,6 +7,8 @@ import {
   type BkChapter,
   type BkSidebarItem,
 } from "@/lib/bk";
+import { ogForChapter, extractQuoteFromHl, buildOgMeta } from "@/lib/og";
+import { BOOK_NAMES } from "@/lib/constants";
 import { PageHeader } from "@/components/page-header";
 import { Card, CardContent } from "@/components/ui/card";
 import { buttonVariants } from "@/components/ui/button";
@@ -15,6 +18,21 @@ import { MobileNav, type MobileNavGroup } from "@/components/mobile-nav";
 
 export const dynamic = "force-dynamic";
 
+export async function generateMetadata({
+  params,
+  searchParams,
+}: {
+  params: Promise<{ chapter: string }>;
+  searchParams: Promise<Record<string, string | string[] | undefined>>;
+}): Promise<Metadata> {
+  const sp = await searchParams;
+  const hlQuote = extractQuoteFromHl(sp);
+  if (hlQuote) {
+    return buildOgMeta({ title: BOOK_NAMES["bk"], quote: hlQuote });
+  }
+  return ogForChapter("bk", "");
+}
+
 // ---------------------------------------------------------------------------
 // Page
 // ---------------------------------------------------------------------------