feat: cleaning code

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

@@ -171,7 +171,7 @@ class _GameScreenState extends State<GameScreen> {
         padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 8),
         decoration: BoxDecoration(
           gradient: const LinearGradient(
-            colors: [Color(0xFFE9B949), Color(0xFFB8860B)],
+            colors: [AppColors.gold, AppColors.goldDark],
           ),
           borderRadius: BorderRadius.circular(20),
           boxShadow: const [BoxShadow(color: Colors.black54, blurRadius: 8)],
@@ -179,7 +179,7 @@ class _GameScreenState extends State<GameScreen> {
         child: const Text(
           'نوبت شماست',
           style: TextStyle(
-            color: Color(0xFF3A0A12),
+            color: AppColors.bg,
             fontWeight: FontWeight.bold,
             fontSize: 16,
           ),
@@ -328,7 +328,7 @@ class _GameScreenState extends State<GameScreen> {
                   child: Text(
                     '$_countdown',
                     style: const TextStyle(
-                      color: Color(0xFF3A0A12),
+                      color: AppColors.bg,
                       fontSize: 26,
                       fontWeight: FontWeight.bold,
                     ),
@@ -398,8 +398,8 @@ class _GameScreenState extends State<GameScreen> {
   Widget _trumpPicker(BuildContext context) {
     const suits = [
       ('spades', '♠', 'پیک', Colors.white),
-      ('hearts', '♥', 'دل', Color(0xFFD32F2F)),
-      ('diamonds', '♦', 'خشت', Color(0xFFD32F2F)),
+      ('hearts', '♥', 'دل', AppColors.suitRed),
+      ('diamonds', '♦', 'خشت', AppColors.suitRed),
       ('clubs', '♣', 'گشنیز', Colors.white),
     ];
     return Container(
@@ -448,7 +448,7 @@ class _GameScreenState extends State<GameScreen> {
               ],
             ),
             const SizedBox(height: 16),
-            const Divider(color: Color(0x33E9B949), height: 1),
+            const Divider(color: AppColors.goldFaint, height: 1),
             const SizedBox(height: 12),
             // بُرِ مجدد با مصرفِ یک بلیت (۵ کارتِ تازه، سپس باز هم انتخابِ حکم).
             BlocBuilder<WalletBloc, WalletBlocState>(

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

@@ -211,7 +211,7 @@ class _LobbyViewState extends State<_LobbyView> {
               label: 'شروع بازی',
               icon: Icons.play_arrow,
               width: double.infinity,
-              colors: const [Color(0xFF3FA34D), Color(0xFF1B5E20)],
+              colors: const [AppColors.success, AppColors.successDark],
               onTap: () => context.read<GameBloc>().startTable(_hands),
             )
           else
@@ -316,7 +316,7 @@ class _LobbyViewState extends State<_LobbyView> {
             shape: BoxShape.circle,
             gradient: selected
                 ? const LinearGradient(
-                    colors: [Color(0xFFE9B949), Color(0xFFB8860B)])
+                    colors: [AppColors.gold, AppColors.goldDark])
                 : null,
             color: selected ? null : AppColors.panel,
             border: Border.all(
@@ -326,7 +326,7 @@ class _LobbyViewState extends State<_LobbyView> {
           child: Text(
             fa[h]!,
             style: TextStyle(
-              color: selected ? const Color(0xFF3A0A12) : Colors.white,
+              color: selected ? AppColors.bg : Colors.white,
               fontSize: 22,
               fontWeight: FontWeight.bold,
             ),

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

@@ -89,7 +89,7 @@ class _TierCard extends StatelessWidget {
   const _TierCard({required this.tier, required this.index});
 
   static const _palettes = [
-    [Color(0xFF43A047), Color(0xFF1B5E20)],
+    [Color(0xFF43A047), AppColors.successDark],
     [Color(0xFFE53935), Color(0xFF8E0E1B)],
     [Color(0xFF1E88E5), Color(0xFF0D3C73)],
     [Color(0xFF8E24AA), Color(0xFF4A0D5E)],