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>

suixinkanUITests/Support/UITestSession.swift

@@ -33,6 +33,7 @@ enum UITestSession {
         line: UInt = #line
     ) throws -> SuixinkanApp {
         sharedApp?.application.terminate()
+        Thread.sleep(forTimeInterval: 1.0)
 
         let relaunched = try UITestAuthenticatedSession.launchLoggedIn(
             openMenuTitle: menuTitle,
@@ -51,6 +52,7 @@ enum UITestSession {
         line: UInt = #line
     ) throws -> SuixinkanApp {
         sharedApp?.application.terminate()
+        Thread.sleep(forTimeInterval: 1.0)
 
         let relaunched = try UITestAuthenticatedSession.launchLoggedIn(
             openProfileRoute: route,