feat: frontend setup — React, TypeScript, Tailwind, auth, layout, routing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/Layout.tsx

@@ -0,0 +1,37 @@
+import { Link, Outlet } from 'react-router-dom'
+import { useQuery } from '@tanstack/react-query'
+import { useAuth } from '../hooks/useAuth'
+import api from '../api/client'
+import type { StorageInfo } from '../types'
+
+export default function Layout() {
+  const { user, logout } = useAuth()
+  const { data: storage } = useQuery<StorageInfo>({
+    queryKey: ['storage'],
+    queryFn: () => api.get('/settings/storage').then((r) => r.data),
+  })
+
+  return (
+    <div className="min-h-screen bg-gray-50">
+      <nav className="bg-gray-900 text-white px-6 py-3 flex items-center justify-between">
+        <div className="flex items-center gap-6">
+          <Link to="/" className="text-blue-400 font-bold text-lg">MeetingProto</Link>
+          <Link to="/recordings" className="hover:text-blue-300">Записи</Link>
+          <Link to="/protocols" className="hover:text-blue-300">Протоколы</Link>
+          <Link to="/templates" className="hover:text-blue-300">Шаблоны</Link>
+          <Link to="/settings" className="text-gray-400 hover:text-blue-300">Настройки</Link>
+        </div>
+        <div className="flex items-center gap-4 text-sm">
+          {storage && (
+            <span className="text-gray-400">Занято: {storage.total_gb} ГБ</span>
+          )}
+          <span>{user?.username}</span>
+          <button onClick={logout} className="text-gray-400 hover:text-white">Выйти</button>
+        </div>
+      </nav>
+      <main className="max-w-7xl mx-auto px-6 py-8">
+        <Outlet />
+      </main>
+    </div>
+  )
+}