feat(frontend): 对局视图 + 回放视图 + 计时器 hook

src/components/game/GameControls.tsx

@@ -0,0 +1,26 @@
+import { useTranslation } from 'react-i18next';
+import { useGameStore } from '../../store/gameStore';
+
+interface Props {
+  onBackToMenu: () => void;
+}
+
+export default function GameControls({ onBackToMenu }: Props) {
+  const { t } = useTranslation();
+  const undo = useGameStore((s) => s.undo);
+  const mode = useGameStore((s) => s.mode);
+  const status = useGameStore((s) => s.status);
+
+  const handleUndo = () => {
+    undo(1);
+  };
+
+  return (
+    <div className="game-controls">
+      <button onClick={handleUndo} disabled={status === 'game_over'}>
+        {t('game.undo')}
+      </button>
+      <button onClick={onBackToMenu}>{t('game.new_game')}</button>
+    </div>
+  );
+}