feat: 更新Swift助手样式规则和应用结构

- 在swift-assistant-style.mdc中添加项目背景、代码结构、命名规范、Swift最佳实践、UI开发、性能、安全性、测试与质量、核心功能、开发流程、App Store指南等详细规则。
- 在yanaApp.swift中将SplashView替换为Splash，简化应用结构。

yana/MVVM/IDLoginPage.swift

@@ -0,0 +1,230 @@
+import SwiftUI
+import Combine
+
+// MARK: - IDLogin ViewModel
+
+@MainActor
+class IDLoginViewModel: ObservableObject {
+    // MARK: - Published Properties
+    @Published var userID: String = ""
+    @Published var password: String = ""
+    @Published var isPasswordVisible: Bool = false
+    @Published var isLoading: Bool = false
+    @Published var errorMessage: String?
+    @Published var showRecoverPassword: Bool = false
+    @Published var loginStep: LoginStep = .input
+    
+    // MARK: - Callbacks
+    var onBack: (() -> Void)?
+    var onLoginSuccess: (() -> Void)?
+    
+    // MARK: - Private Properties
+    private var cancellables = Set<AnyCancellable>()
+    
+    // MARK: - Enums
+    enum LoginStep: Equatable {
+        case input
+        case completed
+    }
+    
+    // MARK: - Computed Properties
+    var isLoginButtonEnabled: Bool {
+        return !isLoading && !userID.isEmpty && !password.isEmpty
+    }
+    
+    // MARK: - Public Methods
+    func onBackTapped() {
+        onBack?()
+    }
+    
+    func onLoginTapped() {
+        guard isLoginButtonEnabled else { return }
+        
+        isLoading = true
+        errorMessage = nil
+        
+        Task {
+            do {
+                let result = try await performLogin()
+                await MainActor.run {
+                    self.handleLoginResult(result)
+                }
+            } catch {
+                await MainActor.run {
+                    self.handleLoginError(error)
+                }
+            }
+        }
+    }
+    
+    func onRecoverPasswordTapped() {
+        showRecoverPassword = true
+    }
+    
+    func onRecoverPasswordBack() {
+        showRecoverPassword = false
+    }
+    
+    // MARK: - Private Methods
+    private func performLogin() async throws -> Bool {
+        // 使用LoginHelper创建登录请求（包含DES加密）
+        guard let loginRequest = await LoginHelper.createIDLoginRequest(
+            userID: userID,
+            password: password
+        ) else {
+            throw APIError.custom("DES加密失败")
+        }
+        
+        let apiService = LiveAPIService()
+        let response: IDLoginResponse = try await apiService.request(loginRequest)
+        
+        if response.code == 200, let data = response.data {
+            // 保存用户信息（如果API返回了用户信息）
+            if let userInfo = data.userInfo {
+                await UserInfoManager.saveUserInfo(userInfo)
+            }
+            
+            // 创建并保存账户模型
+            guard let accountModel = AccountModel.from(loginData: data) else {
+                throw APIError.custom("账户信息无效")
+            }
+            await UserInfoManager.saveAccountModel(accountModel)
+            
+            // 获取用户详细信息（如果API没有返回用户信息）
+            if data.userInfo == nil, let userInfo = await UserInfoManager.fetchUserInfoFromServer(
+                uid: String(data.uid ?? 0),
+                apiService: apiService
+            ) {
+                await UserInfoManager.saveUserInfo(userInfo)
+            }
+            
+            return true
+        } else {
+            throw APIError.custom(response.message ?? "Login failed")
+        }
+    }
+    
+    private func handleLoginResult(_ success: Bool) {
+        isLoading = false
+        if success {
+            loginStep = .completed
+            onLoginSuccess?()
+        }
+    }
+    
+    private func handleLoginError(_ error: Error) {
+        isLoading = false
+        errorMessage = error.localizedDescription
+    }
+}
+
+// MARK: - IDLogin View
+
+struct IDLoginPage: View {
+    @StateObject private var viewModel = IDLoginViewModel()
+    let onBack: () -> Void
+    let onLoginSuccess: () -> Void
+    
+    var body: some View {
+        GeometryReader { geometry in
+            ZStack {
+                // 背景
+                LoginBackgroundView()
+                
+                VStack(spacing: 0) {
+                    // 顶部导航栏
+                    LoginHeaderView(onBack: {
+                        viewModel.onBackTapped()
+                    })
+                    
+                    Spacer()
+                        .frame(height: 60)
+                    
+                    // 标题
+                    Text("ID Login")
+                        .font(.system(size: 28, weight: .bold))
+                        .foregroundColor(.white)
+                        .padding(.bottom, 60)
+                    
+                    // 输入框区域
+                    VStack(spacing: 24) {
+                        // 用户ID输入框（只允许数字）
+                        CustomInputField(
+                            type: .number,
+                            placeholder: "Please enter ID",
+                            text: $viewModel.userID
+                        )
+                        
+                        // 密码输入框（带眼睛按钮）
+                        CustomInputField(
+                            type: .password,
+                            placeholder: "Please enter password",
+                            text: $viewModel.password,
+                            isPasswordVisible: $viewModel.isPasswordVisible
+                        )
+                    }
+                    .padding(.horizontal, 32)
+                    
+                    Spacer()
+                        .frame(height: 80)
+                    
+                    // 忘记密码按钮
+                    HStack {
+                        Spacer()
+                        Button(action: {
+                            viewModel.onRecoverPasswordTapped()
+                        }) {
+                            Text("Forgot Password?")
+                                .font(.system(size: 14))
+                                .foregroundColor(.white.opacity(0.8))
+                        }
+                    }
+                    .padding(.horizontal, 32)
+                    .padding(.bottom, 20)
+                    
+                    // 登录按钮
+                    LoginButtonView(
+                        isLoading: viewModel.isLoading,
+                        isEnabled: viewModel.isLoginButtonEnabled,
+                        onTap: {
+                            viewModel.onLoginTapped()
+                        }
+                    )
+                    .padding(.horizontal, 32)
+                    
+                    Spacer()
+                }
+            }
+        }
+        .navigationBarHidden(true)
+        .navigationDestination(isPresented: $viewModel.showRecoverPassword) {
+            RecoverPasswordPage(
+                onBack: {
+                    viewModel.onRecoverPasswordBack()
+                }
+            )
+            .navigationBarHidden(true)
+        }
+        .onAppear {
+            viewModel.onBack = onBack
+            viewModel.onLoginSuccess = onLoginSuccess
+            
+            #if DEBUG
+            debugInfoSync("🐛 Debug模式: 已移除硬编码测试凭据")
+            #endif
+        }
+        .onChange(of: viewModel.loginStep) { _, newStep in
+            debugInfoSync("🔄 IDLoginView: loginStep 变化为 \(newStep)")
+            if newStep == .completed {
+                debugInfoSync("✅ IDLoginView: 登录成功，准备关闭自身")
+            }
+        }
+    }
+}
+
+#Preview {
+    IDLoginPage(
+        onBack: {},
+        onLoginSuccess: {}
+    )
+}