Fix ZXDB pagination counters and navigation

Implement URL-driven pagination and correct total counts across ZXDB:
- Root /zxdb: SSR reads ?page; client syncs to SSR; Prev/Next as Links.
- Sub-index pages (genres, languages, machinetypes): parse ?page on server; use SSR props in clients; Prev/Next via Links.
- Labels browse (/zxdb/labels): dynamic SSR, reads ?q & ?page; typed count(*); client syncs to SSR; Prev/Next preserve q.
- Label detail (/zxdb/labels/[id]): tab-aware Prev/Next Links; counters from server.
- Repo: replace raw counts with typed Drizzle count(*) for reliable totals.

Signed-off-by: Junie <Junie@lucy.xalior.com>

src/app/zxdb/labels/page.tsx

@@ -3,10 +3,13 @@ import { searchLabels } from "@/server/repo/zxdb";
 
 export const metadata = { title: "ZXDB Labels" };
 
-export const revalidate = 3600;
+// Depends on searchParams (?q=, ?page=). Force dynamic so each request renders correctly.
+export const dynamic = "force-dynamic";
 
-export default async function Page() {
-  // Server-render first page of empty search for instant content
-  const initial = await searchLabels({ page: 1, pageSize: 20 });
-  return <LabelsSearch initial={initial as any} />;
+export default async function Page({ searchParams }: { searchParams: Promise<{ [key: string]: string | string[] | undefined }> }) {
+  const sp = await searchParams;
+  const q = (Array.isArray(sp.q) ? sp.q[0] : sp.q) ?? "";
+  const page = Math.max(1, Number(Array.isArray(sp.page) ? sp.page[0] : sp.page) || 1);
+  const initial = await searchLabels({ q, page, pageSize: 20 });
+  return <LabelsSearch initial={initial as any} initialQ={q} />;
 }