Initial commit: EatMe attendance tracker

Google-SSO PWA for bistro employee clock-in/out, admin employee
management, and stats with CSV export. Express + SQLite backend,
React + Zustand frontend in the light-mono-tui design language.
Multi-stage Dockerfile, compose.yaml for image-based deploys, nginx
reverse-proxy template, and an OKF documentation bundle in docs/.

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

frontend/src/pages/AdminApp.tsx

@@ -0,0 +1,40 @@
+import { useEffect, useState } from 'react';
+import { EmployeeManager } from '../components/EmployeeManager';
+import { AdminStats } from '../components/AdminStats';
+
+type Tab = 'employees' | 'stats';
+
+export function AdminApp() {
+  const [tab, setTab] = useState<Tab>('employees');
+
+  useEffect(() => {
+    function onKey(e: KeyboardEvent) {
+      const target = e.target as HTMLElement;
+      if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') return;
+      if (e.key === '1') setTab('employees');
+      if (e.key === '2') setTab('stats');
+    }
+    window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, []);
+
+  return (
+    <>
+      <div className="tabs">
+        <button
+          className={`tab ${tab === 'employees' ? 'active' : ''}`}
+          onClick={() => setTab('employees')}
+        >
+          [1] Zaměstnanci
+        </button>
+        <button className={`tab ${tab === 'stats' ? 'active' : ''}`} onClick={() => setTab('stats')}>
+          [2] Statistiky
+        </button>
+      </div>
+
+      <div style={{ marginTop: '1rem' }}>
+        {tab === 'employees' ? <EmployeeManager /> : <AdminStats />}
+      </div>
+    </>
+  );
+}