chore: commit pending ZXDB explorer changes prior to index perf work

Context
- Housekeeping commit to capture all current ZXDB Explorer work before index-page performance optimizations.

Includes
- Server-rendered entry detail page with ISR and parallelized DB queries.
- Node runtime for ZXDB API routes and params validation updates for Next 15.
- ZXDB repository extensions (facets, label queries, category queries).
- Cross-linking and Link-based prefetch across ZXDB UI.
- Cache headers on low-churn list APIs.

Notes
- Follow-up commit will focus specifically on speeding up index pages via SSR initial data and ISR.

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

src/app/api/zxdb/genres/[id]/route.ts

@@ -8,8 +8,9 @@ const querySchema = z.object({
   pageSize: z.coerce.number().int().positive().max(100).optional(),
 });
 
-export async function GET(req: NextRequest, ctx: { params: { id: string } }) {
-  const p = paramsSchema.safeParse(ctx.params);
+export async function GET(req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
+  const raw = await ctx.params;
+  const p = paramsSchema.safeParse(raw);
   if (!p.success) {
     return new Response(JSON.stringify({ error: p.error.flatten() }), { status: 400 });
   }