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/members/page.tsx

@@ -1,6 +1,7 @@
 import React from "react";
 import type { Metadata } from "next";
-import { activeMembers, alumni } from "../../content/members";
+import { activeMembers as staticMembers, alumni as staticAlumni } from "../../content/members";
+import { getMembers, getAlumni } from "../../lib/api";
 import { ProfessorDetailsDialog } from "./_components/ProfessorDetailsDialog";
 
 export const metadata: Metadata = {
@@ -18,7 +19,10 @@ const DEGREE_LABEL: Record<string, string> = {
   MS: "M. S.",
 };
 
-export default function MembersPage() {
+export default async function MembersPage() {
+  const activeMembers = (await getMembers()) ?? staticMembers;
+  const alumni = (await getAlumni()) ?? staticAlumni;
+
   const phdStudents = activeMembers.filter(
     (m) =>
       m.degree === "PhD" ||