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/components/node-status-badge.tsx

@@ -0,0 +1,30 @@
+import {Badge} from '@/components/ui/badge';
+import {cn} from '@/lib/utils';
+
+import type {StatusTone} from './node-utils';
+
+const toneClassName: Record<StatusTone, string> = {
+  success: 'bg-emerald-500/10 border-emerald-500/20 text-emerald-600',
+  warning: 'bg-amber-500/10 border-amber-500/20 text-amber-600',
+  danger: 'bg-destructive/10 border-destructive/20 text-destructive',
+  info: 'bg-blue-500/10 border-blue-500/20 text-blue-600',
+};
+
+export function NodeStatusBadge({
+  label,
+  tone,
+  className,
+}: {
+  label: string;
+  tone: StatusTone;
+  className?: string;
+}) {
+  return (
+    <Badge
+      variant="outline"
+      className={cn('text-[10px] rounded-full py-0 px-2 font-medium', toneClassName[tone], className)}
+    >
+      {label}
+    </Badge>
+  );
+}