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/standardization/page.tsx

@@ -1,13 +1,15 @@
 import React from "react";
 import type { Metadata } from "next";
-import { standardsBodies } from "../../content/standards";
+import { standardsBodies as staticStandards } from "../../content/standards";
+import { getStandardsBodies } from "../../lib/api";
 
 export const metadata: Metadata = {
   title: "Standardization",
   description: "AI Agent Networking Lab (ANL) international standardization research and contributions",
 };
 
-export default function StandardizationPage() {
+export default async function StandardizationPage() {
+  const standardsBodies = (await getStandardsBodies()) ?? staticStandards;
   return (
     <div className="container-content py-8 sm:py-12 space-y-10 sm:space-y-14">
       {/* Page Header */}