refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

frontend/app/(main)/nodes/page.tsx

@@ -0,0 +1,28 @@
+import {Suspense} from 'react';
+
+import {Skeleton} from '@/components/ui/skeleton';
+
+import {NodesPageClient} from './page-client';
+
+function NodesPageFallback() {
+  return (
+    <div className="py-6 px-1 space-y-6">
+      <div className="flex items-center justify-between gap-3">
+        <Skeleton className="h-8 w-40" />
+        <div className="flex gap-2">
+          <Skeleton className="h-7 w-20" />
+          <Skeleton className="h-7 w-24" />
+        </div>
+      </div>
+      <Skeleton className="h-96 w-full" />
+    </div>
+  );
+}
+
+export default function NodesPage() {
+  return (
+    <Suspense fallback={<NodesPageFallback />}>
+      <NodesPageClient />
+    </Suspense>
+  );
+}