Initial commit: snakkimo CMT

React + Vite + Tailwind dashboard with:
- Login (JWT via snakkimo auth)
- Dashboard with Datenbankverwaltung + Contentverwaltung tiles
- Table overview with record counts (total, published, blocked)
- Table record viewer with text/status filters and linked field navigation

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

src/components/Layout.jsx

@@ -0,0 +1,40 @@
+import { useNavigate } from 'react-router-dom';
+import { getUser, logout } from '../lib/api';
+
+export default function Layout({ children, back }) {
+  const navigate = useNavigate();
+  const user = getUser();
+
+  function handleLogout() {
+    logout();
+    navigate('/login');
+  }
+
+  return (
+    <div className="min-h-screen bg-slate-100">
+      <header className="bg-indigo-700 text-white px-6 py-3 flex items-center justify-between shadow">
+        <div className="flex items-center gap-3">
+          {back && (
+            <button
+              onClick={() => navigate(back)}
+              className="text-indigo-200 hover:text-white text-sm mr-1"
+            >
+              ← Zurück
+            </button>
+          )}
+          <span className="text-xl font-bold tracking-tight">🐟 snakkimo CMT</span>
+        </div>
+        <div className="flex items-center gap-4 text-sm">
+          <span className="text-indigo-200">{user?.email}</span>
+          <button
+            onClick={handleLogout}
+            className="bg-indigo-600 hover:bg-indigo-500 px-3 py-1 rounded-lg transition-colors"
+          >
+            Logout
+          </button>
+        </div>
+      </header>
+      <main className="p-6">{children}</main>
+    </div>
+  );
+}