补充 Auth/Tasks/ScenicPermission/Live 单元测试，并完善 UI Test 登录与会话稳定性。

移除 LoginViewModel 硬编码账号，扩展登录流程测试覆盖；调整 ZLoginSmokeUITests 执行顺序与路由直达逻辑，避免清空 Keychain 影响其它用例。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkanTests/Fixtures/v9_login_single_scenic_success.json

@@ -0,0 +1,24 @@
+{
+  "code": 100000,
+  "msg": "success",
+  "data": {
+    "token": "person-temp-token",
+    "scenic_users": [
+      {
+        "account_type": "scenic_user",
+        "id": 101,
+        "user_id": 101,
+        "scenic_user_id": 101,
+        "ss_user_id": 101,
+        "username": "scenic_admin",
+        "real_name": "张三",
+        "nickname": "张三",
+        "phone": "13800138000",
+        "scenic_id": 10,
+        "scenic_name": "示例景区",
+        "is_current": false
+      }
+    ],
+    "store_users": []
+  }
+}