feat: add game graphic

lib/feature/game/presentation/screen/game_screen.dart

@@ -90,8 +90,15 @@ class _GameScreenState extends State<GameScreen> {
             listenWhen:
                 (a, b) =>
                     (a.notice != b.notice && b.notice != null) ||
-                    (a.gameOver == null && b.gameOver != null),
+                    (a.gameOver == null && b.gameOver != null) ||
+                    (a.handResult == null && b.handResult != null),
             listener: (context, state) {
+              // جشنِ کُت: هنگامِ دستِ کُت‌شده‌ی بُرده، ضربه‌ی لمسی.
+              final hr = state.handResult;
+              if (hr != null && hr.kot) {
+                final myTeam = (state.state?.yourSeat ?? 0) % 2;
+                if (hr.winnerTeam == myTeam) HapticFeedback.mediumImpact();
+              }
               if (state.gameOver != null) {
                 final won =
                     state.gameOver!.winnerTeam ==
@@ -540,44 +547,77 @@ class _GameScreenState extends State<GameScreen> {
     final mySeat = s.state?.yourSeat ?? 0;
     final myTeam = mySeat % 2;
     final won = r.winnerTeam == myTeam;
+    final kotWin = won && r.kot; // جشنِ ویژه فقط برای کُتِ بُرده
+
     return IgnorePointer(
-      child: Center(
-        child: Container(
-          padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 18),
-          decoration: BoxDecoration(
-            color: Colors.black87,
-            borderRadius: BorderRadius.circular(16),
-            border: Border.all(color: AppColors.gold),
-          ),
-          child: Column(
-            mainAxisSize: MainAxisSize.min,
-            children: [
-              Text(
-                won ? 'این دست را بردید!' : 'این دست را باختید',
-                style: TextStyle(
-                  color: won ? AppColors.green : Colors.redAccent,
-                  fontSize: 20,
-                  fontWeight: FontWeight.bold,
-                ),
+      child: Stack(
+        children: [
+          if (kotWin) const Positioned.fill(child: Confetti(count: 40)),
+          Center(
+            child: Container(
+              padding:
+                  const EdgeInsets.symmetric(horizontal: 28, vertical: 18),
+              decoration: BoxDecoration(
+                gradient: kotWin
+                    ? const LinearGradient(
+                        colors: [AppColors.lapisMid, AppColors.lapisInk])
+                    : null,
+                color: kotWin ? null : Colors.black87,
+                borderRadius: BorderRadius.circular(16),
+                border: Border.all(
+                    color: AppColors.gold, width: kotWin ? 2 : 1),
+                boxShadow: kotWin
+                    ? [
+                        BoxShadow(
+                            color: AppColors.gold.withValues(alpha: 0.4),
+                            blurRadius: 20),
+                      ]
+                    : null,
               ),
-              if (r.kot)
-                Padding(
-                  padding: const EdgeInsets.only(top: 6),
-                  child: Text(
-                    r.hakemKot
-                        ? 'حاکم‌کُت! (${r.points} امتیاز)'
-                        : 'کُت! (${r.points} امتیاز)',
-                    style: const TextStyle(color: AppColors.gold),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  if (kotWin)
+                    Text(
+                      r.hakemKot ? 'حاکم‌کُت! 🔥' : 'کُت! 🔥',
+                      style: const TextStyle(
+                        color: AppColors.gold,
+                        fontSize: 30,
+                        fontWeight: FontWeight.bold,
+                        shadows: [Shadow(color: Colors.black, blurRadius: 8)],
+                      ),
+                    ),
+                  Text(
+                    won ? 'این دست را بردید!' : 'این دست را باختید',
+                    style: TextStyle(
+                      color: won ? AppColors.green : Colors.redAccent,
+                      fontSize: kotWin ? 16 : 20,
+                      fontWeight: FontWeight.bold,
+                    ),
                   ),
-                ),
-              const SizedBox(height: 6),
-              Text(
-                'امتیاز: ${r.scores.isNotEmpty ? r.scores[0] : 0} - ${r.scores.length > 1 ? r.scores[1] : 0}',
-                style: const TextStyle(color: Colors.white70),
+                  if (r.kot && !kotWin)
+                    Padding(
+                      padding: const EdgeInsets.only(top: 6),
+                      child: Text(
+                        r.hakemKot
+                            ? 'حاکم‌کُت! (${r.points} امتیاز)'
+                            : 'کُت! (${r.points} امتیاز)',
+                        style: const TextStyle(color: AppColors.gold),
+                      ),
+                    ),
+                  if (kotWin)
+                    Text('+${r.points} امتیاز',
+                        style: const TextStyle(color: AppColors.gold)),
+                  const SizedBox(height: 6),
+                  Text(
+                    'امتیاز: ${r.scores.isNotEmpty ? r.scores[0] : 0} - ${r.scores.length > 1 ? r.scores[1] : 0}',
+                    style: const TextStyle(color: Colors.white70),
+                  ),
+                ],
               ),
-            ],
+            ),
           ),
-        ),
+        ],
       ),
     );
   }