feat: add game graphic

lib/feature/wallet/presentation/screen/lobby_screen.dart

@@ -13,6 +13,7 @@ import '../bloc/wallet_bloc.dart';
 import '../bloc/wallet_event.dart';
 import '../bloc/wallet_state.dart';
 import '../bloc/wallet_status.dart';
+import '../widgets/coin_fly.dart';
 import '../widgets/streak_dialog.dart';
 
 /// لابی اصلی: کیف‌پول، دکمه بازی/دورهمی/فروشگاه/سکه روزانه.
@@ -24,6 +25,9 @@ class LobbyScreen extends StatefulWidget {
 }
 
 class _LobbyScreenState extends State<LobbyScreen> {
+  final _coinKey = GlobalKey(); // چیپِ سکه (مقصدِ پروازِ سکه‌ها)
+  final _dailyKey = GlobalKey(); // کارتِ هدیه‌ی روزانه (مبدأ)
+
   @override
   void initState() {
     super.initState();
@@ -32,6 +36,20 @@ class _LobbyScreenState extends State<LobbyScreen> {
 
   void _reload() => context.read<WalletBloc>().add(LoadWalletEvent());
 
+  Offset? _center(GlobalKey k) {
+    final box = k.currentContext?.findRenderObject() as RenderBox?;
+    if (box == null || !box.attached) return null;
+    return box.localToGlobal(box.size.center(Offset.zero));
+  }
+
+  void _flyCoins() {
+    final from = _center(_dailyKey);
+    final to = _center(_coinKey);
+    if (from != null && to != null && mounted) {
+      CoinFly.play(context, from: from, to: to);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -41,6 +59,7 @@ class _LobbyScreenState extends State<LobbyScreen> {
           listener: (context, state) {
             final d = state.dailyStatus;
             if (d is DailySuccess) {
+              _flyCoins(); // پروازِ سکه‌ها از کارتِ هدیه به چیپِ سکه
               ScaffoldMessenger.of(context).showSnackBar(
                 SnackBar(content: Text('سکه روزانه دریافت شد: +${d.amount}')),
               );
@@ -56,7 +75,10 @@ class _LobbyScreenState extends State<LobbyScreen> {
             return SafeArea(
               child: Column(
                 children: [
-                  _TopBar(wallet: wallet, onCoinTap: () => _openShop(context)),
+                  _TopBar(
+                      wallet: wallet,
+                      coinKey: _coinKey,
+                      onCoinTap: () => _openShop(context)),
                   Expanded(
                     child: SingleChildScrollView(
                       padding: const EdgeInsets.fromLTRB(16, 6, 16, 8),
@@ -121,6 +143,7 @@ class _LobbyScreenState extends State<LobbyScreen> {
                           ),
                           const SizedBox(height: 14),
                           _DailyCard(
+                            key: _dailyKey,
                             wallet: wallet,
                             onTap:
                                 () => StreakDialog.show(
@@ -347,7 +370,7 @@ class _ActionTile extends StatelessWidget {
 class _DailyCard extends StatelessWidget {
   final WalletEntity? wallet;
   final VoidCallback onTap;
-  const _DailyCard({required this.wallet, required this.onTap});
+  const _DailyCard({super.key, required this.wallet, required this.onTap});
 
   @override
   Widget build(BuildContext context) {
@@ -478,7 +501,8 @@ class _DailyCard extends StatelessWidget {
 class _TopBar extends StatelessWidget {
   final WalletEntity? wallet;
   final VoidCallback onCoinTap;
-  const _TopBar({required this.wallet, required this.onCoinTap});
+  final Key? coinKey;
+  const _TopBar({required this.wallet, required this.onCoinTap, this.coinKey});
 
   @override
   Widget build(BuildContext context) {
@@ -582,6 +606,7 @@ class _TopBar extends StatelessWidget {
           ),
           const SizedBox(width: 8),
           GestureDetector(
+            key: coinKey,
             onTap: onCoinTap,
             child: StatChip(
               icon: Icons.monetization_on,