feat(frontend): connect Next.js server components to Go backend REST API with resilient fallback

- Implement typed REST API client in refer_landing_page/lib/api.ts
- Support API_BASE_URL environment variable with graceful fallback to static content
- Connect Home page (projects, areas, stats), Members page (active, alumni), Publications (highlights, list, patents), Lectures, and Standardization pages to backend endpoints
- Pass all 12 SSG build, TypeScript, ESLint, and E2E quality gates

refer_landing_page/app/publications/[category]/page.tsx

@@ -2,7 +2,8 @@ import React from "react";
 import type { Metadata } from "next";
 import { notFound } from "next/navigation";
 import { CategoryNav } from "../_components/CategoryNav";
-import { publications, patents } from "../../../content/publications";
+import { publications as staticPubs, patents as staticPatents } from "../../../content/publications";
+import { getPublications, getPatents } from "../../../lib/api";
 import { PUB_CATEGORIES } from "../../../content/categories";
 import { PubCategory } from "../../../content/types";
 
@@ -30,7 +31,7 @@ export function generateStaticParams() {
   }));
 }
 
-export default function PublicationCategoryPage({ params }: PageProps) {
+export default async function PublicationCategoryPage({ params }: PageProps) {
   const { category } = params;
   const currentCat = PUB_CATEGORIES.find((c) => c.slug === category);
 
@@ -40,6 +41,15 @@ export default function PublicationCategoryPage({ params }: PageProps) {
 
   const slug = category as PubCategory;
 
+  const publications = (await getPublications()) ?? staticPubs;
+  const patents = (await getPatents()) ?? staticPatents;
+
+  const counts = {
+    "intl-journal-conf": publications.filter((p) => p.category === "intl-journal-conf").length,
+    "domestic-journal-conf": publications.filter((p) => p.category === "domestic-journal-conf").length,
+    patent: patents.length,
+  };
+
   let records: any[] = [];
   if (slug === "patent") {
     records = patents.map((p) => ({
@@ -82,7 +92,7 @@ export default function PublicationCategoryPage({ params }: PageProps) {
 
       {/* Category Nav Cards */}
       <section className="pt-6 md:pt-8 border-t border-line">
-        <CategoryNav currentCategory={slug} />
+        <CategoryNav currentCategory={slug} counts={counts} />
       </section>
 
       {/* Record List Section */}

refer_landing_page/app/publications/_components/CategoryNav.tsx

@@ -1,17 +1,27 @@
 import React from "react";
 import Link from "next/link";
 import { PUB_CATEGORIES } from "../../../content/categories";
-import { publications, patents } from "../../../content/publications";
+import { publications as staticPubs, patents as staticPatents } from "../../../content/publications";
 import { PubCategory } from "../../../content/types";
 
+export interface CategoryCounts {
+  "intl-journal-conf"?: number;
+  "domestic-journal-conf"?: number;
+  patent?: number;
+}
+
 interface CategoryNavProps {
   currentCategory?: PubCategory;
+  counts?: CategoryCounts;
 }
 
-export function CategoryNav({ currentCategory }: CategoryNavProps) {
+export function CategoryNav({ currentCategory, counts }: CategoryNavProps) {
   const getCount = (slug: string) => {
-    if (slug === "patent") return patents.length;
-    return publications.filter((p) => p.category === slug).length;
+    if (counts?.[slug as keyof CategoryCounts] !== undefined) {
+      return counts[slug as keyof CategoryCounts]!;
+    }
+    if (slug === "patent") return staticPatents.length;
+    return staticPubs.filter((p) => p.category === slug).length;
   };
 
   return (

refer_landing_page/app/publications/page.tsx

@@ -1,13 +1,23 @@
 import type { Metadata } from "next";
 import { CategoryNav } from "./_components/CategoryNav";
-import { publications } from "../../content/publications";
+import { publications as staticPubs, patents as staticPatents } from "../../content/publications";
+import { getPublications, getPatents } from "../../lib/api";
 
 export const metadata: Metadata = {
   title: "Publications",
   description: "AI Agent Networking Lab (ANL) research publications and patents overview",
 };
 
-export default function PublicationsIndexPage() {
+export default async function PublicationsIndexPage() {
+  const publications = (await getPublications()) ?? staticPubs;
+  const patents = (await getPatents()) ?? staticPatents;
+
+  const counts = {
+    "intl-journal-conf": publications.filter((p) => p.category === "intl-journal-conf").length,
+    "domestic-journal-conf": publications.filter((p) => p.category === "domestic-journal-conf").length,
+    patent: patents.length,
+  };
+
   // Selected representative publications (curated via database isHighlight flag)
   const highlights = publications.filter((p) => p.isHighlight);
 
@@ -22,7 +32,7 @@ export default function PublicationsIndexPage() {
 
       {/* Category Summary Cards */}
       <section className="pt-6 md:pt-8 border-t border-line">
-        <CategoryNav />
+        <CategoryNav counts={counts} />
       </section>
 
       {/* Highlights Section */}