Import Tripoli Cloud frontend prototype

React/TypeScript/Vite/Tailwind prototype from the design session (login,
dashboard, photos, backups, settings views with mocked API layer).
Infra work (Rust services, Ansible, OpenTofu) follows in subsequent commits.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/src/hooks/useDashboardStats.ts

@@ -0,0 +1,11 @@
+import { useEffect, useState } from 'react';
+import { getDashboardStats } from '../api/files';
+import type { StatItem } from '../types';
+
+export function useDashboardStats() {
+  const [stats, setStats] = useState<StatItem[]>([]);
+  useEffect(() => {
+    void getDashboardStats().then(setStats);
+  }, []);
+  return stats;
+}