feat(frontend): purge all static content fallback files and enforce strict backend-only dynamic rendering

- Delete all legacy static content data files (members.ts, publications.ts, lectures.ts, standards.ts, projects.ts)
- Remove all fallback imports and static fallbacks across all page components
- Enforce strict dynamic runtime fetching where pages render empty datasets when Go backend server is unavailable

refer_landing_page/app/publications/page.tsx

@@ -1,6 +1,5 @@
 import type { Metadata } from "next";
 import { CategoryNav } from "./_components/CategoryNav";
-import { publications as staticPubs, patents as staticPatents } from "../../content/publications";
 import { getPublications, getPatents } from "../../lib/api";
 
 export const metadata: Metadata = {
@@ -11,8 +10,8 @@ export const metadata: Metadata = {
 export const dynamic = "force-dynamic";
 
 export default async function PublicationsIndexPage() {
-  const publications = (await getPublications()) ?? staticPubs;
-  const patents = (await getPatents()) ?? staticPatents;
+  const publications = (await getPublications()) ?? [];
+  const patents = (await getPatents()) ?? [];
 
   const counts = {
     "intl-journal-conf": publications.filter((p) => p.category === "intl-journal-conf").length,