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

test/features/mall/mall_tab_config_test.dart

@@ -0,0 +1,44 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:jinzhi_flutter_app/features/mall/application/mall_tab_config.dart';
+
+void main() {
+  test('builds the resident mall URL with Jinzhi attribution and theme', () {
+    const config = MallTabConfig(
+      enabled: true,
+      url: 'https://mall.example.com/home?campaign=gold',
+      adId: 'ad-1',
+      trackingId: 'tracking-1',
+    );
+
+    final uri = config.attributedUri(clickId: 'click-1', isDark: true)!;
+
+    expect(uri.queryParameters['campaign'], 'gold');
+    expect(uri.queryParameters['source_app'], 'jinzhi');
+    expect(uri.queryParameters['source_entry'], 'mall_tab');
+    expect(uri.queryParameters['ad_id'], 'ad-1');
+    expect(uri.queryParameters['tracking_id'], 'tracking-1');
+    expect(uri.queryParameters['click_id'], 'click-1');
+    expect(uri.queryParameters['isNight'], '1');
+  });
+
+  test('retains server open-mode metadata', () {
+    const resident = MallTabConfig(
+      enabled: true,
+      url: 'https://mall.example.com',
+    );
+    const nativeApp = MallTabConfig(
+      enabled: true,
+      url: 'https://mall.example.com',
+      openMode: 'native_app',
+    );
+    const external = MallTabConfig(
+      enabled: true,
+      url: 'https://mall.example.com',
+      openMode: 'external',
+    );
+
+    expect(resident.opensInApp, isTrue);
+    expect(nativeApp.opensInApp, isFalse);
+    expect(external.opensInApp, isFalse);
+  });
+}