feat(arch): unify frontend and backend into single Go backend server with static export

- Configure Next.js static export (output: 'export') with client-side dynamic fetching
- Implement Go static serving with SPA fallback in backend/internal/router/router.go
- Unify multi-stage build in backend/Dockerfile (Node -> Go -> minimal Alpine runtime)
- Simplify root docker-compose.yml to single anl-app service on port 8080
- Update REQUIREMENTS.md DM-03 and AC-17 normative contracts to v3.0 Unified Go Backend
- Restore strict regression verification in Gate 9 (AC-35/36/37) and unittest suite
- All Go unit tests, TypeScript type checks, ESLint, and E2E gates passed clean

refer_landing_page/app/publications/page.tsx

@@ -1,17 +1,22 @@
-import type { Metadata } from "next";
+"use client";
+
+import React, { useEffect, useState } from "react";
 import { CategoryNav } from "./_components/CategoryNav";
 import { getPublications, getPatents } from "../../lib/api";
+import type { Publication, Patent } from "../../content/types";
 
-export const metadata: Metadata = {
-  title: "Publications",
-  description: "AI Agent Networking Lab (ANL) research publications and patents overview",
-};
+export default function PublicationsIndexPage() {
+  const [publications, setPublications] = useState<Publication[]>([]);
+  const [patents, setPatents] = useState<Patent[]>([]);
 
-export const dynamic = "force-dynamic";
-
-export default async function PublicationsIndexPage() {
-  const publications = (await getPublications()) ?? [];
-  const patents = (await getPatents()) ?? [];
+  useEffect(() => {
+    getPublications().then((p) => {
+      if (p) setPublications(p);
+    });
+    getPatents().then((pat) => {
+      if (pat) setPatents(pat);
+    });
+  }, []);
 
   const counts = {
     "intl-journal-conf": publications.filter((p) => p.category === "intl-journal-conf").length,