feat: 增强邮箱登录功能和密码恢复流程

- 更新邮箱登录相关功能，新增邮箱验证码获取和登录API端点。
- 添加AccountModel以管理用户认证信息，支持会话票据的存储和更新。
- 实现密码恢复功能，支持通过邮箱获取验证码和重置密码。
- 增加本地化支持，更新相关字符串以适应新功能。
- 引入ValidationHelper以验证邮箱和密码格式，确保用户输入的有效性。
- 更新视图以支持邮箱登录和密码恢复的用户交互。

yana/Views/EMailLoginView.swift

@@ -8,6 +8,16 @@ struct EMailLoginView: View {
     // 使用本地@State管理UI状态
     @State private var email: String = ""
     @State private var verificationCode: String = ""
+    @State private var codeCountdown: Int = 0
+    @State private var timer: Timer?
+    
+    // 管理输入框焦点状态
+    @FocusState private var focusedField: Field?
+    
+    enum Field {
+        case email
+        case verificationCode
+    }
     
     // 计算登录按钮是否可用
     private var isLoginButtonEnabled: Bool {
@@ -18,17 +28,22 @@ struct EMailLoginView: View {
     private var getCodeButtonText: String {
         if store.isCodeLoading {
             return ""
-        } else if store.codeCountdown > 0 {
-            return "\(store.codeCountdown)S"
+        } else if codeCountdown > 0 {
+            return "\(codeCountdown)S"
         } else {
             return "email_login.get_code".localized
         }
     }
     
+    // 计算获取验证码按钮是否可用
+    private var isCodeButtonEnabled: Bool {
+        return !store.isCodeLoading && codeCountdown == 0
+    }
+    
     var body: some View {
         GeometryReader { geometry in
             ZStack {
-                // 背景图片 - 使用与登录页面相同的"bg"
+                // 背景图片
                 Image("bg")
                     .resizable()
                     .aspectRatio(contentMode: .fill)
@@ -83,6 +98,7 @@ struct EMailLoginView: View {
                                 .keyboardType(.emailAddress)
                                 .autocapitalization(.none)
                                 .disableAutocorrection(true)
+                                .focused($focusedField, equals: .email)
                         }
                         
                         // 验证码输入框
@@ -104,9 +120,13 @@ struct EMailLoginView: View {
                                     .foregroundColor(.white)
                                     .font(.system(size: 16))
                                     .keyboardType(.numberPad)
+                                    .focused($focusedField, equals: .verificationCode)
                                 
                                 // 获取验证码按钮
                                 Button(action: {
+                                    // 立即开始倒计时
+                                    startCountdown()
+                                    // 发送API请求
                                     store.send(.getVerificationCodeTapped)
                                 }) {
                                     ZStack {
@@ -123,10 +143,10 @@ struct EMailLoginView: View {
                                     .frame(width: 60, height: 36)
                                     .background(
                                         RoundedRectangle(cornerRadius: 18)
-                                            .fill(Color.white.opacity(store.isCodeButtonEnabled && !email.isEmpty ? 0.2 : 0.1))
+                                            .fill(Color.white.opacity(isCodeButtonEnabled && !email.isEmpty ? 0.2 : 0.1))
                                     )
                                 }
-                                .disabled(!store.isCodeButtonEnabled || email.isEmpty || store.isCodeLoading)
+                                .disabled(!isCodeButtonEnabled || email.isEmpty || store.isCodeLoading)
                             }
                             .padding(.horizontal, 24)
                         }
@@ -138,7 +158,6 @@ struct EMailLoginView: View {
                     
                     // 登录按钮
                     Button(action: {
-                        // 发送登录action时传递本地状态
                         store.send(.loginButtonTapped(email: email, verificationCode: verificationCode))
                     }) {
                         ZStack {
@@ -184,21 +203,59 @@ struct EMailLoginView: View {
             }
         }
         .onAppear {
-            // 初始化时同步TCA状态到本地状态
-            email = store.email
-            verificationCode = store.verificationCode
+            // 每次进入页面都重置状态
+            store.send(.resetState)
+            
+            email = ""
+            verificationCode = ""
+            codeCountdown = 0
+            stopCountdown()
             
             #if DEBUG
-            // Debug环境下，确保默认数据已加载
-            if email.isEmpty {
-                email = "85494536@gmail.com"
-            }
-            if verificationCode.isEmpty {
-                verificationCode = "784544"
-            }
-            print("🐛 Debug模式: 默认邮箱=\(email), 默认验证码=\(verificationCode)")
+            email = "exzero@126.com"
+            store.send(.emailChanged(email))
             #endif
         }
+        .onDisappear {
+            stopCountdown()
+        }
+        .onChange(of: email) { newEmail in
+            store.send(.emailChanged(newEmail))
+        }
+        .onChange(of: verificationCode) { newCode in
+            store.send(.verificationCodeChanged(newCode))
+        }
+        .onChange(of: store.isCodeLoading) { isCodeLoading in
+            // 当API请求完成且成功时，自动将焦点切换到验证码输入框
+            if !isCodeLoading && store.errorMessage == nil {
+                DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
+                    focusedField = .verificationCode
+                }
+            }
+        }
+    }
+    
+    // MARK: - 倒计时管理
+    private func startCountdown() {
+        stopCountdown()
+        
+        // 立即设置倒计时
+        codeCountdown = 60
+        
+        timer = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { _ in
+            DispatchQueue.main.async {
+                if codeCountdown > 0 {
+                    codeCountdown -= 1
+                } else {
+                    stopCountdown()
+                }
+            }
+        }
+    }
+    
+    private func stopCountdown() {
+        timer?.invalidate()
+        timer = nil
     }
 }
 
@@ -211,4 +268,4 @@ struct EMailLoginView: View {
         },
         onBack: {}
     )
-} 
+}