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/application/ad_config_foreground_refresher.dart

@@ -16,17 +16,21 @@ class AdConfigForegroundRefresher {
   final void Function() _banner;
   final Future<void> Function() _splash, _mall;
   Future<void>? _running;
-  Future<void> refresh() =>
-      _running ??= _refresh().whenComplete(() => _running = null);
-  Future<void> _refresh() async {
+  Future<void> refresh({bool refreshMallTabConfig = true}) =>
+      _running ??= _refresh(
+        refreshMallTabConfig: refreshMallTabConfig,
+      ).whenComplete(() => _running = null);
+  Future<void> _refresh({required bool refreshMallTabConfig}) async {
     try {
       _banner();
     } catch (_) {}
     try {
       await _splash();
     } catch (_) {}
-    try {
-      await _mall();
-    } catch (_) {}
+    if (refreshMallTabConfig) {
+      try {
+        await _mall();
+      } catch (_) {}
+    }
   }
 }

lib/features/ads/data/ads_api_client.dart

@@ -1,3 +1,4 @@
+import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:dio/dio.dart';
@@ -218,7 +219,7 @@ class ProtoMessage {
   int integer(int tag) => (_fields[tag]?.lastOrNull as int?) ?? 0;
   String string(int tag) {
     final value = _fields[tag]?.lastOrNull;
-    return value is List<int> ? String.fromCharCodes(value) : '';
+    return value is List<int> ? utf8.decode(value, allowMalformed: true) : '';
   }
 
   ProtoMessage message(int tag) {

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,
+                  ),
+                ),
+              ),
+            ),
           ),
         ),
       ],