feat: 对齐常驻商城与七鱼客服交互

- 同步商城 H5 登录态与原生 token
- 完善商城/原生 tab 切换、动画及返回交互
- 修复七鱼客服键盘避让和状态栏恢复
- 调整开屏跳过按钮与登录入口交互

lib/features/ads/presentation/splash_ad_dialog.dart

@@ -71,9 +71,29 @@ class _SplashAdDialogState extends State<SplashAdDialog> {
         Positioned(
           top: MediaQuery.paddingOf(context).top + 16,
           right: 18,
-          child: FilledButton(
-            onPressed: () => Navigator.of(context).pop(SplashAdResult.skipped),
-            child: Text('跳过 ${remain}s'),
+          child: GestureDetector(
+            key: const ValueKey('splash-skip'),
+            onTap: () => Navigator.of(context).pop(SplashAdResult.skipped),
+            child: DecoratedBox(
+              decoration: BoxDecoration(
+                color: Colors.black.withValues(alpha: 0.62),
+                borderRadius: BorderRadius.circular(18),
+              ),
+              child: Padding(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 14,
+                  vertical: 7,
+                ),
+                child: Text(
+                  '跳过  ${remain > 0 ? remain : 0}s',
+                  style: const TextStyle(
+                    color: Colors.white,
+                    fontSize: 13,
+                    fontWeight: FontWeight.w500,
+                  ),
+                ),
+              ),
+            ),
           ),
         ),
       ],