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/PilotCertification/API/PilotCertificationAPI.swift

@@ -6,7 +6,7 @@
 //
 
 import Foundation
-import Observation
+import Combine
 
 /// 飞手认证服务协议，定义认证详情、短信、提交和编辑接口。
 @MainActor
@@ -18,10 +18,9 @@ protocol PilotCertificationServing {
 }
 
 @MainActor
-@Observable
 /// 飞手认证 API，封装 `/api/app/flyer` 认证相关接口。
 final class PilotCertificationAPI {
-    @ObservationIgnored private let client: APIClient
+    private let client: APIClient
 
     /// 初始化飞手认证 API，并注入共享网络客户端。
     init(client: APIClient) {

suixinkan/Features/PilotCertification/ViewModels/PilotCertificationViewModel.swift

@@ -6,7 +6,7 @@
 //
 
 import Foundation
-import Observation
+import Combine
 
 @MainActor
 /// 飞手认证实名认证读取协议，便于 ViewModel 单测替换。
@@ -17,29 +17,28 @@ protocol PilotRealNameServing {
 extension ProfileAPI: PilotRealNameServing {}
 
 @MainActor
-@Observable
 /// 飞手认证 ViewModel，管理审核状态、表单、验证码、证件图上传和提交。
-final class PilotCertificationViewModel {
-    private(set) var flyer: FlyerDetailResponse?
-    private(set) var realNameInfo: RealNameInfo?
-    var name = ""
-    var certType: PilotCertType = .caac
-    var certNo = ""
-    var certImageUrl = ""
-    var startDate = Date()
-    var endDate = Calendar.current.date(byAdding: .year, value: 1, to: Date()) ?? Date()
-    var droneModel = ""
-    var droneSerialNo = ""
-    var phone = ""
-    var verifyCode = ""
-    private(set) var pendingCertificateImageData: Data?
-    private(set) var pendingCertificateFileName: String?
-    private(set) var uploadProgress: Int?
-    private(set) var loading = false
-    private(set) var sendingCode = false
-    private(set) var submitting = false
-    private(set) var countdown = 0
-    var statusMessage: String?
+final class PilotCertificationViewModel: ObservableObject {
+    @Published private(set) var flyer: FlyerDetailResponse?
+    @Published private(set) var realNameInfo: RealNameInfo?
+    @Published var name = ""
+    @Published var certType: PilotCertType = .caac
+    @Published var certNo = ""
+    @Published var certImageUrl = ""
+    @Published var startDate = Date()
+    @Published var endDate = Calendar.current.date(byAdding: .year, value: 1, to: Date()) ?? Date()
+    @Published var droneModel = ""
+    @Published var droneSerialNo = ""
+    @Published var phone = ""
+    @Published var verifyCode = ""
+    @Published private(set) var pendingCertificateImageData: Data?
+    @Published private(set) var pendingCertificateFileName: String?
+    @Published private(set) var uploadProgress: Int?
+    @Published private(set) var loading = false
+    @Published private(set) var sendingCode = false
+    @Published private(set) var submitting = false
+    @Published private(set) var countdown = 0
+    @Published var statusMessage: String?
 
     /// 加载实名状态和飞手认证详情，单通道失败不清空另一通道数据。
     func load(api: any PilotCertificationServing, realNameAPI: any PilotRealNameServing) async {

suixinkan/Features/PilotCertification/Views/PilotCertificationViews.swift

@@ -12,14 +12,14 @@ import UIKit
 
 /// 飞手认证页面，展示认证审核状态并支持提交/驳回后编辑。
 struct PilotCertificationView: View {
-    @Environment(AccountContext.self) private var accountContext
-    @Environment(ProfileAPI.self) private var profileAPI
-    @Environment(PilotCertificationAPI.self) private var pilotAPI
-    @Environment(OSSUploadService.self) private var ossUploadService
-    @Environment(ToastCenter.self) private var toastCenter
+    @EnvironmentObject private var accountContext: AccountContext
+    @Environment(\.profileAPI) private var profileAPI
+    @Environment(\.pilotCertificationAPI) private var pilotAPI
+    @Environment(\.ossUploadService) private var ossUploadService
+    @EnvironmentObject private var toastCenter: ToastCenter
     @Environment(\.globalLoading) private var globalLoading
 
-    @State private var viewModel = PilotCertificationViewModel()
+    @StateObject private var viewModel = PilotCertificationViewModel()
     @State private var selectedImageItem: PhotosPickerItem?
     private let countdownTimer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()
 
@@ -55,7 +55,7 @@ struct PilotCertificationView: View {
         .onReceive(countdownTimer) { _ in
             viewModel.tickCountdown()
         }
-        .onChange(of: selectedImageItem) { _, item in
+        .onChange(of: selectedImageItem) { item in
             guard let item else { return }
             Task { await loadImage(item) }
         }