Migrate from iOS 17 Observation to iOS 16-compatible Combine architecture.

Lower deployment target to iOS 16, replace @Observable with ObservableObject, add navigation and UI compatibility shims, and include login smoke UI tests.

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

suixinkan/Features/Profile/Views/AccountSwitchView.swift

@@ -9,19 +9,19 @@ import SwiftUI
 
 /// 账号切换页面，展示当前登录主体下可进入的景区账号和门店账号。
 struct AccountSwitchView: View {
-    @Environment(AppSession.self) private var appSession
-    @Environment(AccountContext.self) private var accountContext
-    @Environment(PermissionContext.self) private var permissionContext
-    @Environment(AppRouter.self) private var appRouter
-    @Environment(ProfileAPI.self) private var profileAPI
-    @Environment(AuthAPI.self) private var authAPI
-    @Environment(AccountContextAPI.self) private var accountContextAPI
-    @Environment(AuthSessionCoordinator.self) private var authSessionCoordinator
-    @Environment(ToastCenter.self) private var toastCenter
+    @EnvironmentObject private var appSession: AppSession
+    @EnvironmentObject private var accountContext: AccountContext
+    @EnvironmentObject private var permissionContext: PermissionContext
+    @EnvironmentObject private var appRouter: AppRouter
+    @Environment(\.profileAPI) private var profileAPI
+    @Environment(\.authAPI) private var authAPI
+    @Environment(\.accountContextAPI) private var accountContextAPI
+    @Environment(\.authSessionCoordinator) private var authSessionCoordinator
+    @EnvironmentObject private var toastCenter: ToastCenter
     @Environment(\.globalLoading) private var globalLoading
     @Environment(\.dismiss) private var dismiss
 
-    @State private var viewModel = AccountSwitchViewModel()
+    @StateObject private var viewModel = AccountSwitchViewModel()
 
     private var selectedAccount: AccountSwitchAccount? {
         viewModel.selectedAccount
@@ -43,7 +43,7 @@ struct AccountSwitchView: View {
     @ViewBuilder
     private var accountList: some View {
         if viewModel.accounts.isEmpty && !viewModel.loading {
-            ContentUnavailableView(
+            AppContentUnavailableView(
                 "暂无可切换账号",
                 systemImage: "person.crop.circle.badge.exclamationmark",
                 description: Text("当前登录账号下没有其他可切换账号。")

suixinkan/Features/Profile/Views/DebugHomeMenuPreviewView.swift

@@ -10,9 +10,9 @@ import SwiftUI
 
 /// 首页菜单调试预览页，展示所有已知菜单入口并跳过权限过滤。
 struct DebugHomeMenuPreviewView: View {
-    @Environment(AppRouter.self) private var appRouter
-    @Environment(RouterPath.self) private var router
-    @Environment(ToastCenter.self) private var toastCenter
+    @EnvironmentObject private var appRouter: AppRouter
+    @EnvironmentObject private var router: RouterPath
+    @EnvironmentObject private var toastCenter: ToastCenter
 
     private let items = HomeMenuRouter.debugAllMenuItems()
 

suixinkan/Features/Profile/Views/ProfileView.swift

@@ -11,20 +11,20 @@ import UIKit
 
 /// 个人信息页视图，展示用户资料、账号状态、实名认证状态和退出登录入口。
 struct ProfileView: View {
-    @Environment(AppSession.self) private var appSession
-    @Environment(AccountContext.self) private var accountContext
-    @Environment(PermissionContext.self) private var permissionContext
-    @Environment(ScenicSpotContext.self) private var scenicSpotContext
-    @Environment(AppRouter.self) private var appRouter
-    @Environment(RouterPath.self) private var router
-    @Environment(ProfileAPI.self) private var profileAPI
-    @Environment(OSSUploadService.self) private var ossUploadService
-    @Environment(ToastCenter.self) private var toastCenter
-    @Environment(AuthSessionCoordinator.self) private var authSessionCoordinator
+    @EnvironmentObject private var appSession: AppSession
+    @EnvironmentObject private var accountContext: AccountContext
+    @EnvironmentObject private var permissionContext: PermissionContext
+    @EnvironmentObject private var scenicSpotContext: ScenicSpotContext
+    @EnvironmentObject private var appRouter: AppRouter
+    @EnvironmentObject private var router: RouterPath
+    @Environment(\.profileAPI) private var profileAPI
+    @Environment(\.ossUploadService) private var ossUploadService
+    @EnvironmentObject private var toastCenter: ToastCenter
+    @Environment(\.authSessionCoordinator) private var authSessionCoordinator
     @Environment(\.globalLoading) private var globalLoading
     @Environment(\.horizontalSizeClass) private var horizontalSizeClass
 
-    @State private var viewModel = ProfileViewModel()
+    @StateObject private var viewModel = ProfileViewModel()
     @State private var showsPasswordSheet = false
     @State private var showsLogoutConfirm = false
     @State private var pickedAvatarItem: PhotosPickerItem?
@@ -74,13 +74,13 @@ struct ProfileView: View {
             }
             Button("取消", role: .cancel) {}
         }
-        .onChange(of: viewModel.isEditingProfile) { _, isEditing in
+        .onChange(of: viewModel.isEditingProfile) { isEditing in
             guard isEditing else { return }
             DispatchQueue.main.asyncAfter(deadline: .now() + 0.15) {
                 nicknameFocused = true
             }
         }
-        .onChange(of: pickedAvatarItem) { _, item in
+        .onChange(of: pickedAvatarItem) { item in
             Task { await prepareAvatarImage(from: item) }
         }
     }
@@ -662,14 +662,14 @@ private struct PasswordUpdateSheet: View {
 #Preview {
     NavigationStack {
         ProfileView()
-            .environment(AppSession())
-            .environment(AccountContext())
-            .environment(PermissionContext())
-            .environment(ScenicSpotContext())
-            .environment(AppRouter())
-            .environment(ToastCenter())
-            .environment(ProfileAPI(client: APIClient()))
-            .environment(OSSUploadService(configService: UploadAPI(client: APIClient())))
-            .environment(AuthSessionCoordinator())
+            .environmentObject(AppSession())
+            .environmentObject(AccountContext())
+            .environmentObject(PermissionContext())
+            .environmentObject(ScenicSpotContext())
+            .environmentObject(AppRouter())
+            .environmentObject(ToastCenter())
+            .environment(\.profileAPI, ProfileAPI(client: APIClient()))
+            .environment(\.ossUploadService, OSSUploadService(configService: UploadAPI(client: APIClient())))
+            .environment(\.authSessionCoordinator, AuthSessionCoordinator())
     }
 }

suixinkan/Features/Profile/Views/RealNameAuthView.swift

@@ -11,12 +11,12 @@ import UIKit
 
 /// 实名认证页面，展示审核状态并允许提交基础实名资料。
 struct RealNameAuthView: View {
-    @Environment(AccountContext.self) private var accountContext
-    @Environment(ProfileAPI.self) private var profileAPI
-    @Environment(OSSUploadService.self) private var ossUploadService
-    @Environment(ToastCenter.self) private var toastCenter
+    @EnvironmentObject private var accountContext: AccountContext
+    @Environment(\.profileAPI) private var profileAPI
+    @Environment(\.ossUploadService) private var ossUploadService
+    @EnvironmentObject private var toastCenter: ToastCenter
     @Environment(\.globalLoading) private var globalLoading
-    @State private var viewModel = RealNameAuthViewModel()
+    @StateObject private var viewModel = RealNameAuthViewModel()
     @State private var pickedFrontItem: PhotosPickerItem?
     @State private var pickedBackItem: PhotosPickerItem?
 
@@ -38,10 +38,10 @@ struct RealNameAuthView: View {
         .task {
             await loadInfo()
         }
-        .onChange(of: pickedFrontItem) { _, item in
+        .onChange(of: pickedFrontItem) { item in
             Task { await prepareIdentityImage(from: item, side: .front) }
         }
-        .onChange(of: pickedBackItem) { _, item in
+        .onChange(of: pickedBackItem) { item in
             Task { await prepareIdentityImage(from: item, side: .back) }
         }
     }

suixinkan/Features/Profile/Views/SettingsFlowViews.swift

@@ -53,7 +53,7 @@ enum SettingsDisplayPolicy {
 
 /// 设置中心页面，展示关于我们、版本、下载链接和协议入口。
 struct SettingsCenterView: View {
-    @Environment(RouterPath.self) private var router
+    @EnvironmentObject private var router: RouterPath
     @State private var copiedDownloadLink = false
 
     private var versionText: String {