feat(ios): AppSession 状态枚举接入路由 + TabBar 精简 + authorizationCode

- AuthManager: 移除 isAuthenticated/isRestoring，仅保留 AppSession 枚举
- App 入口: switch session 分发行路由，支持 disabled/deleted 状态页
- 新增 AccountStatusView（禁用/注销提示）
- ContentView: TabBar 5→4（学习/知识库/分析/我的），去掉 AI 首页
- StudyHomeView: 融合每日思考题，去掉 AI 输入栏和本周活跃
- AnalysisHomeView: 新增本周学习活跃柱状图
- AppleAuthRequest 新增 authorizationCode，LoginPage 提取传递
- APIError 支持 errorCode，APIClient 解析服务端 errorCode
- AuthManager.applyErrorCode() 根据错误码切换状态

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

AIStudyApp/AIStudyApp/AIStudyAppApp.swift

@@ -18,9 +18,11 @@ struct AIStudyAppApp: App {
     var body: some Scene {
         WindowGroup {
             Group {
-                if authManager.isRestoring {
+                switch authManager.session {
+                case .unknown:
                     SplashScreen()
-                } else if authManager.isAuthenticated {
+
+                case .authenticated:
                     if hasCompletedOnboarding {
                         ContentView()
                             .environmentObject(authManager)
@@ -28,9 +30,29 @@ struct AIStudyAppApp: App {
                         PostLoginOnboardingFlow(hasCompletedOnboarding: $hasCompletedOnboarding)
                             .environmentObject(authManager)
                     }
-                } else {
+
+                case .disabled:
+                    AccountStatusView(
+                        icon: "person.crop.circle.badge.xmark",
+                        title: "账号已被禁用",
+                        message: "您的账号已被管理员禁用，如有疑问请联系客服。",
+                        onBackToLogin: { authManager.session = .unauthenticated }
+                    )
+
+                case .deleted:
+                    AccountStatusView(
+                        icon: "person.crop.circle.badge.minus",
+                        title: "账号已注销",
+                        message: "您的账号已成功注销，欢迎随时回来重新注册。",
+                        onBackToLogin: { authManager.session = .unauthenticated }
+                    )
+
+                case .expired, .unauthenticated:
                     PreLoginFlow()
                         .environmentObject(authManager)
+
+                case .authenticating, .refreshing:
+                    SplashScreen()
                 }
             }
             .preferredColorScheme(effectiveColorScheme)
@@ -253,6 +275,7 @@ struct LoginPage: View {
             }
             let givenName = credential.fullName?.givenName
             let familyName = credential.fullName?.familyName
+            let authCode = credential.authorizationCode.flatMap { String(data: $0, encoding: .utf8) }
 
             isLoggingIn = true
             errorMessage = nil
@@ -264,6 +287,7 @@ struct LoginPage: View {
                     LoginPage.currentRawNonce = nil // 用完即清，防重放
                     let resp = try await AuthService.shared.appleLogin(
                         identityToken: tokenStr,
+                        authorizationCode: authCode,
                         givenName: givenName,
                         familyName: familyName,
                         nonce: rawNonce
@@ -325,6 +349,50 @@ struct OnboardingPage: View {
     }
 }
 
+// MARK: - Account Status (disabled / deleted)
+
+struct AccountStatusView: View {
+    let icon: String
+    let title: String
+    let message: String
+    let onBackToLogin: () -> Void
+
+    var body: some View {
+        ZStack {
+            ZXGradient.page.ignoresSafeArea()
+            VStack(spacing: 24) {
+                Image(systemName: icon)
+                    .font(.system(size: 56))
+                    .foregroundColor(Color.zxCoral.opacity(0.6))
+                    .padding(.bottom, 8)
+
+                Text(title)
+                    .font(.system(size: 22, weight: .heavy))
+                    .foregroundColor(Color.zxF0)
+
+                Text(message)
+                    .font(.system(size: 15))
+                    .foregroundColor(Color.zxF04)
+                    .multilineTextAlignment(.center)
+                    .lineSpacing(4)
+                    .padding(.horizontal, 40)
+
+                Button {
+                    onBackToLogin()
+                } label: {
+                    Text("返回首页")
+                        .font(.system(size: 15, weight: .semibold))
+                        .foregroundColor(Color.zxOnPrimary)
+                        .frame(width: 200, height: 48)
+                        .background(ZXGradient.brand)
+                        .clipShape(RoundedRectangle(cornerRadius: 14))
+                }
+                .padding(.top, 12)
+            }
+        }
+    }
+}
+
 // MARK: - GoalSetup
 
 struct GoalSetupPage: View {

AIStudyApp/AIStudyApp/ContentView.swift

@@ -1,72 +1,51 @@
 import SwiftUI
 
 struct ContentView: View {
-    @State private var selectedTab = "ai"
+    @State private var selectedTab = "study"
+
     var body: some View {
-        ZStack {
+        TabView(selection: $selectedTab) {
-            switch selectedTab {
+            NavigationStack {
-            case "ai": NavigationStack { AIHomeView().background(Color.zxBg0.ignoresSafeArea()) }
+                StudyHomeView()
-            case "library": NavigationStack { LibraryHomeView().background(Color.zxBg0.ignoresSafeArea()) }
+                    .background(Color.zxCanvas.ignoresSafeArea())
-            case "study": NavigationStack { StudyHomeView().background(Color.zxBg0.ignoresSafeArea()) }
-            case "analysis": NavigationStack { AnalysisHomeView().background(Color.zxBg0.ignoresSafeArea()) }
-            case "profile": NavigationStack { ProfileView().background(Color.zxBg0.ignoresSafeArea()) }
-            default: NavigationStack { AIHomeView() }
             }
-            VStack { Spacer(); ZXTabBar(active: $selectedTab) }.ignoresSafeArea(edges: .bottom)
+            .tabItem {
+                Label("学习", systemImage: "flame")
+            }
+            .tag("study")
+
+            NavigationStack {
+                LibraryHomeView()
+                    .background(Color.zxCanvas.ignoresSafeArea())
+            }
+            .tabItem {
+                Label("知识库", systemImage: "books.vertical")
+            }
+            .tag("library")
+
+            NavigationStack {
+                AnalysisHomeView()
+                    .background(Color.zxCanvas.ignoresSafeArea())
+            }
+            .tabItem {
+                Label("分析", systemImage: "chart.bar")
+            }
+            .tag("analysis")
+
+            NavigationStack {
+                ProfileView()
+                    .background(Color.zxCanvas.ignoresSafeArea())
+            }
+            .tabItem {
+                Label("我的", systemImage: "person.crop.circle")
+            }
+            .tag("profile")
         }
-        .animation(.easeInOut(duration: 0.2), value: selectedTab)
+        .tint(Color.zxPrimary)
-        .ignoresSafeArea(edges: .bottom)
     }
 }
 
-struct ZXTabBar: View {
+// MARK: - Shared Components
-    @Binding var active: String
-    private let items = [
-        ("ai", "AI", "brain.head.profile"),
-        ("library", "知识库", "books.vertical"),
-        ("study", "学习", "bolt"),
-        ("analysis", "分析", "chart.bar"),
-        ("profile", "我的", "person"),
-    ]
-
-    var body: some View {
-        HStack(spacing: 0) {
-            ForEach(items, id: \.0) { item in
-                let on = item.0 == active
-                Button {
-                    active = item.0
-                } label: {
-                    VStack(spacing: 4) {
-                        ZStack(alignment: .top) {
-                            if on {
-                                Capsule()
-                                    .fill(Color.zxPurple)
-                                    .frame(width: 20, height: 3)
-                                    .offset(y: -4)
-                            }
-                            Image(systemName: on ? "\(item.2).fill" : item.2)
-                                .font(.system(size: 22))
-                                .foregroundColor(on ? Color.zxPurple : Color.zxF03)
-                        }
-                        Text(item.1)
-                            .font(.system(size: 10, weight: on ? .semibold : .regular))
-                            .foregroundColor(on ? Color.zxPurple : Color.zxF03)
-                    }
-                    .frame(maxWidth: .infinity)
-                }
-                .accessibilityLabel("\(item.1)标签")
-            }
-        }
-        .padding(.top, 6)
-        .padding(.bottom, 34)
-        .frame(height: 83)
-        .background(.ultraThinMaterial)
-        .background(Color.zxBg0.opacity(0.95))
-        .overlay(alignment: .top) {
-            Rectangle().fill(Color.zxBorder008).frame(height: 1)
-        }
-    }
-}
 
 struct ZXIconBtn: View {
     let icon: String; let size: CGFloat; var branded = false; let action: () -> Void
@@ -140,4 +119,4 @@ struct ZXAIInputBar: View {
         .overlay(RoundedRectangle(cornerRadius: 20).stroke(Color.zxBorder008, lineWidth: 1))
         .clipShape(RoundedRectangle(cornerRadius: 20))
     }
-}
+}

AIStudyApp/AIStudyApp/Core/Auth/AuthManager.swift

@@ -5,10 +5,23 @@ extension Notification.Name {
     static let tokenExpired = Notification.Name("cloud.longde.AIStudyApp.tokenExpired")
 }
 
+enum AppSession: Equatable {
+    case unknown
+    case unauthenticated
+    case authenticating
+    case authenticated
+    case refreshing
+    case expired
+    case disabled
+    case deleted
+}
+
 @MainActor
 final class AuthManager: ObservableObject {
-    @Published var isAuthenticated = false
+    @Published var session: AppSession = .unknown
-    @Published var isRestoring = true
+
+    var isLoading: Bool { session == .unknown }
+    var isLoggedIn: Bool { session == .authenticated }
 
     static let shared = AuthManager()
 
@@ -30,12 +43,13 @@ final class AuthManager: ObservableObject {
         }
     }
 
+    // MARK: - Session restore
+
     func restoreSession() async {
-        isRestoring = true
+        session = .unknown
-        defer { isRestoring = false }
 
         guard let token = KeychainHelper.getAccessToken() else {
-            isAuthenticated = false
+            session = .unauthenticated
             return
         }
 
@@ -43,8 +57,9 @@ final class AuthManager: ObservableObject {
 
         do {
             let _: UserProfileResponse = try await APIClient.shared.request("/users/me")
-            isAuthenticated = true
+            session = .authenticated
         } catch {
+            session = .refreshing
             if let refreshed = await tryRefresh() {
                 await APIClient.shared.setToken(refreshed.accessToken)
                 KeychainHelper.save(
@@ -52,25 +67,30 @@ final class AuthManager: ObservableObject {
                     refreshToken: refreshed.refreshToken,
                     userId: refreshed.user?.id ?? ""
                 )
-                isAuthenticated = true
+                session = .authenticated
             } else {
                 await APIClient.shared.setToken(nil)
                 KeychainHelper.clear()
-                isAuthenticated = false
+                session = .expired
             }
         }
     }
 
+    // MARK: - Sign in
+
     func signIn(_ response: AuthResponse) async {
+        session = .authenticating
         await APIClient.shared.setToken(response.accessToken)
         KeychainHelper.save(
             accessToken: response.accessToken,
             refreshToken: response.refreshToken,
             userId: response.user?.id ?? ""
         )
-        isAuthenticated = true
+        session = .authenticated
     }
 
+    // MARK: - Sign out
+
     func signOut() async {
         if let refreshToken = KeychainHelper.getRefreshToken() {
             let body = RefreshRequest(refreshToken: refreshToken)
@@ -80,14 +100,31 @@ final class AuthManager: ObservableObject {
         }
         await APIClient.shared.setToken(nil)
         KeychainHelper.clear()
-        isAuthenticated = false
+        session = .unauthenticated
     }
 
+    // MARK: - Force session update from error code
+
+    func applyErrorCode(_ code: String?) {
+        switch code {
+        case "AUTH_USER_DISABLED":
+            session = .disabled
+        case "AUTH_USER_DELETED":
+            session = .deleted
+        case "AUTH_REFRESH_TOKEN_EXPIRED", "AUTH_REFRESH_TOKEN_REVOKED":
+            session = .expired
+        default:
+            break
+        }
+    }
+
+    // MARK: - Private
+
     private func handleUnauthorized() {
         Task {
             await APIClient.shared.setToken(nil)
             KeychainHelper.clear()
-            isAuthenticated = false
+            session = .unauthenticated
         }
     }
 

AIStudyApp/AIStudyApp/Core/Models/APIModels.swift

@@ -90,6 +90,7 @@ struct AuthUser: Codable, Identifiable {
 
 struct AppleAuthRequest: Codable {
     let identityToken: String
+    let authorizationCode: String?
     let fullName: AppleFullName?
     let nonce: String?
 

AIStudyApp/AIStudyApp/Core/Network/APIClient.swift

@@ -107,23 +107,40 @@ actor APIClient {
 
     // MARK: - Server error decoding
 
-    /// 从服务端错误响应中提取 message，避免丢弃真正的错误原因
+    /// 从服务端错误响应中提取 message 和 errorCode
+    func extractErrorInfo(_ data: Data) -> (message: String?, errorCode: String?) {
+        guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
+            return (nil, nil)
+        }
+        return (
+            message: json["message"] as? String,
+            errorCode: json["errorCode"] as? String
+        )
+    }
+
     private func decodeServerError(_ data: Data, fallback: APIError) -> APIError {
-        if let serverMsg = extractServerMessage(data) {
+        let info = extractErrorInfo(data)
-            return APIError.serverError(serverMsg)
+        if let serverMsg = info.message {
+            return APIError.serverError(serverMsg, code: info.errorCode)
         }
         return fallback
     }
+}
 
-    private func extractServerMessage(_ data: Data) -> String? {
+// MARK: - Server error info (public for AuthManager)
-        guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else {
+
+struct ServerErrorInfo {
+    let message: String
+    let errorCode: String?
+}
+
+extension APIClient {
+    nonisolated func parseErrorInfo(from data: Data) -> ServerErrorInfo? {
+        guard let json = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
+              let msg = json["message"] as? String else {
             return nil
         }
-        // NestJS GlobalExceptionFilter 格式: { success, statusCode, message }
+        return ServerErrorInfo(message: msg, errorCode: json["errorCode"] as? String)
-        if let msg = json["message"] as? String, !msg.isEmpty {
-            return msg
-        }
-        return nil
     }
 
     // MARK: - Decoding

AIStudyApp/AIStudyApp/Core/Network/APIError.swift

@@ -10,7 +10,13 @@ enum APIError: LocalizedError {
     case decodingFailed(String)
     case networkError(Error)
     case unauthorized
-    case serverError(String)
+    case serverError(String, code: String? = nil)
+
+    /// 语义错误码（如 AUTH_USER_DISABLED），用于 AppSession 状态判断
+    var errorCode: String? {
+        if case .serverError(_, let code) = self { return code }
+        return nil
+    }
 
     var errorDescription: String? {
         switch self {
@@ -19,7 +25,7 @@ enum APIError: LocalizedError {
         case .decodingFailed(let msg): return "数据解析失败: \(msg)"
         case .networkError(let e): return e.localizedDescription
         case .unauthorized: return "未授权，请重新登录"
-        case .serverError(let msg): return msg
+        case .serverError(let msg, _): return msg
         }
     }
 }

AIStudyApp/AIStudyApp/Core/Services/APIService.swift

@@ -30,9 +30,10 @@ class AuthService {
     static let shared = AuthService()
     private let client = APIClient.shared
 
-    func appleLogin(identityToken: String, givenName: String?, familyName: String?, nonce: String? = nil) async throws -> AuthResponse {
+    func appleLogin(identityToken: String, authorizationCode: String? = nil, givenName: String?, familyName: String?, nonce: String? = nil) async throws -> AuthResponse {
         let body = AppleAuthRequest(
             identityToken: identityToken,
+            authorizationCode: authorizationCode,
             fullName: givenName != nil
                 ? AppleAuthRequest.AppleFullName(givenName: givenName, familyName: familyName)
                 : nil,

AIStudyApp/AIStudyApp/Features/Analysis/AnalysisHomeView.swift

@@ -4,7 +4,7 @@ struct AnalysisHomeView: View {
     @StateObject private var viewModel = ActivityViewModel()
     var body: some View {
         ZStack {
-            Color.zxBg0.ignoresSafeArea()
+            Color.zxCanvas.ignoresSafeArea()
             VStack(spacing: 0) {
                 HStack {
                     Text("学习分析").font(.system(size: 22, weight: .heavy)).foregroundColor(Color.zxF0).tracking(-0.5)
@@ -29,6 +29,16 @@ struct AnalysisHomeView: View {
                             HStack { Text("掌握度趋势").font(.system(size: 14, weight: .bold)).foregroundColor(Color.zxF0); Spacer(); Text("↑ +8% 本周").font(.system(size: 12, weight: .semibold)).foregroundColor(Color.zxGreen) }
                             ZXChartView()
                         }.padding(16).background(Color.zxFill004).overlay(RoundedRectangle(cornerRadius: 20).stroke(Color.zxBorder006, lineWidth: 1)).clipShape(RoundedRectangle(cornerRadius: 20))
+                        VStack(alignment: .leading, spacing: 14) {
+                            Text("本周学习活跃").font(.system(size: 14, weight: .bold)).foregroundColor(Color.zxF0)
+                            ZXWeekBarChart()
+                            HStack {
+                                Text("总计 3.5 小时").font(.system(size: 11)).foregroundColor(Color.zxF03)
+                                Spacer()
+                                Text("日均 30 分钟").font(.system(size: 11)).foregroundColor(Color.zxF03)
+                            }
+                        }.padding(16).background(Color.zxFill004).overlay(RoundedRectangle(cornerRadius: 20).stroke(Color.zxBorder006, lineWidth: 1)).clipShape(RoundedRectangle(cornerRadius: 20))
+
                         VStack(alignment: .leading, spacing: 12) {
                             HStack { HStack(spacing: 8) { Image(systemName: "exclamationmark.triangle.fill").font(.system(size: 14)).foregroundColor(Color.zxYellow); Text("薄弱知识点").font(.system(size: 15, weight: .bold)).foregroundColor(Color.zxF0) }; Spacer(); NavigationLink(value: Route.weakPoints) { Text("全部 \(viewModel.focusItems.count) 个").font(.system(size: 12)).foregroundColor(Color.zxPurple) }.accessibilityLabel("查看全部薄弱知识点") }
                             ForEach(viewModel.focusItems.prefix(5)) { item in
@@ -101,3 +111,34 @@ struct ZXChartView: View {
         .animation(reduceMotion ? nil : .default, value: showChart)
     }
 }
+
+struct ZXWeekBarChart: View {
+    let data: [(String, CGFloat)] = [("一", 0.3), ("二", 0.5), ("三", 0.7), ("四", 0.45), ("五", 0.8), ("六", 0.9), ("日", 0.6)]
+    @State private var show = false
+
+    var body: some View {
+        VStack(spacing: 8) {
+            HStack(alignment: .bottom, spacing: 8) {
+                ForEach(data, id: \.0) { d in
+                    VStack(spacing: 6) {
+                        RoundedRectangle(cornerRadius: 6)
+                            .fill(
+                                LinearGradient(
+                                    colors: [Color.zxPurple.opacity(0.8), Color.zxAccent.opacity(0.6)],
+                                    startPoint: .top, endPoint: .bottom
+                                )
+                            )
+                            .frame(height: show ? d.1 * 80 : 4)
+                            .animation(.spring(response: 0.6, dampingFraction: 0.7), value: show)
+                        Text(d.0)
+                            .font(.system(size: 10))
+                            .foregroundColor(Color.zxF03)
+                    }
+                    .frame(maxWidth: .infinity)
+                }
+            }
+        }
+        .frame(height: 100)
+        .onAppear { show = true }
+    }
+}

AIStudyApp/AIStudyApp/Features/Study/StudyHomeView.swift

@@ -6,45 +6,237 @@ struct StudyHomeView: View {
     @StateObject private var reviewVM = ReviewViewModel()
 
     var body: some View {
-        ZStack { ZXGradient.page.ignoresSafeArea()
+        ZStack {
-            ScrollView { VStack(spacing: 16) {
+            Color.zxCanvas.ignoresSafeArea()
-                HStack { VStack(alignment: .leading, spacing: 2) { Text("学习工作台").font(.system(size: 20, weight: .heavy)).foregroundColor(Color.zxF0).tracking(-0.4) }; Spacer()
+
-                    if studyVM.isLoading { ZXLoadingView(size: 22, lineWidth: 2) }
+            ScrollView {
-                    HStack(spacing: 4) { Image(systemName: "flame.fill").font(.system(size: 14)).foregroundColor(Color.zxOrange); Text("14 天连续").font(.system(size: 13, weight: .bold)).foregroundColor(Color.zxOrange) }.padding(.horizontal, 12).padding(.vertical, 6).background(Color.zxOrangeBG(0.1)).clipShape(Capsule()).overlay(Capsule().stroke(Color(hex: "#F97316", opacity: 0.2), lineWidth: 1)) }
+                VStack(spacing: 16) {
-                    .padding(.horizontal, 20).padding(.top, ZXSpacing.statusBarH + 16).padding(.bottom, 4)
+                    // MARK: - Header
-                pc
+                    HStack {
-                VStack(alignment: .leading, spacing: 12) { HStack { Text("今日任务").font(.system(size: 15, weight: .bold)).foregroundColor(Color.zxF0); Spacer(); HStack(spacing: 4) { Image(systemName: "calendar").font(.system(size: 12)).foregroundColor(Color.zxF04); Text("AI 自动排期").font(.system(size: 12)).foregroundColor(Color.zxF04) } }
+                        Spacer()
-                    ForEach($studyHomeVM.tasks) { $t in
+                        if studyVM.isLoading {
-                        if t.tp == "回忆测试" {
+                            ZXLoadingView(size: 22, lineWidth: 2)
-                            NavigationLink(value: Route.activeRecall) { ZXSTaskRowView(task: t) { t.d.toggle() } }.foregroundColor(.primary)
+                        }
-                        } else if t.tp == "费曼练习" {
+                        HStack(spacing: 4) {
-                            NavigationLink(value: Route.aiChat) { ZXSTaskRowView(task: t) { t.d.toggle() } }.foregroundColor(.primary)
+                            Image(systemName: "flame.fill")
-                        } else if t.tp == "薄弱点" {
+                                .font(.system(size: 14))
-                            NavigationLink(value: Route.weakPoints) { ZXSTaskRowView(task: t) { t.d.toggle() } }.foregroundColor(.primary)
+                                .foregroundColor(Color.zxOrange)
-                        } else if t.tp == "间隔复习" {
+                            Text("14 天连续")
-                            NavigationLink(value: Route.reviewCard) { ZXSTaskRowView(task: t) { t.d.toggle() } }.foregroundColor(.primary)
+                                .font(.system(size: 13, weight: .bold))
-                        } else {
+                                .foregroundColor(Color.zxOrange)
-                            NavigationLink(value: Route.learningSession(taskTitle: t.t, taskType: t.tp, taskColorHex: t.ch)) { ZXSTaskRowView(task: t) { t.d.toggle() } }.foregroundColor(.primary)
+                        }
+                        .padding(.horizontal, 12)
+                        .padding(.vertical, 6)
+                        .background(Color.zxOrangeBG(0.1))
+                        .clipShape(Capsule())
+                        .overlay(Capsule().stroke(Color(hex: "#F97316", opacity: 0.2), lineWidth: 1))
+                    }
+                    .padding(.horizontal, 20)
+                    .padding(.top, ZXSpacing.statusBarH + 16)
+                    .padding(.bottom, 4)
+
+                    // MARK: - Progress
+                    progressCard
+
+                    // MARK: - Today's Tasks
+                    VStack(alignment: .leading, spacing: 12) {
+                        HStack {
+                            Text("今日任务")
+                                .font(.system(size: 15, weight: .bold))
+                                .foregroundColor(Color.zxF0)
+                            Spacer()
+                            HStack(spacing: 4) {
+                                Image(systemName: "calendar")
+                                    .font(.system(size: 12))
+                                    .foregroundColor(Color.zxF04)
+                                Text("AI 自动排期")
+                                    .font(.system(size: 12))
+                                    .foregroundColor(Color.zxF04)
+                            }
+                        }
+                        ForEach($studyHomeVM.tasks) { $t in
+                            if t.tp == "回忆测试" {
+                                NavigationLink(value: Route.activeRecall) {
+                                    ZXSTaskRowView(task: t) { t.d.toggle() }
+                                }
+                                .foregroundColor(.primary)
+                            } else if t.tp == "费曼练习" {
+                                NavigationLink(value: Route.aiChat) {
+                                    ZXSTaskRowView(task: t) { t.d.toggle() }
+                                }
+                                .foregroundColor(.primary)
+                            } else if t.tp == "薄弱点" {
+                                NavigationLink(value: Route.weakPoints) {
+                                    ZXSTaskRowView(task: t) { t.d.toggle() }
+                                }
+                                .foregroundColor(.primary)
+                            } else if t.tp == "间隔复习" {
+                                NavigationLink(value: Route.reviewCard) {
+                                    ZXSTaskRowView(task: t) { t.d.toggle() }
+                                }
+                                .foregroundColor(.primary)
+                            } else {
+                                NavigationLink(value: Route.learningSession(taskTitle: t.t, taskType: t.tp, taskColorHex: t.ch)) {
+                                    ZXSTaskRowView(task: t) { t.d.toggle() }
+                                }
+                                .foregroundColor(.primary)
+                            }
                         }
                     }
+                    .padding(.horizontal, 20)
+
+                    // MARK: - Daily Thinking
+                    dailyThinkingCard
+                        .padding(.horizontal, 20)
+
+                    // Bottom spacer
+                    Color.clear.frame(height: 100)
                 }
-                VStack(alignment: .leading, spacing: 14) { Text("本周学习活跃").font(.system(size: 15, weight: .bold)).foregroundColor(Color.zxF0)
-                    HStack(alignment: .bottom, spacing: 8) { ForEach(0..<7, id: \.self) { i in VStack(spacing: 8) { RoundedRectangle(cornerRadius: 6).fill(i == 6 ? Color.zxFill01 : Color(hex: "#7C6EFA", opacity: studyHomeVM.weekActivity[i] * 0.9 + 0.1)).frame(height: studyHomeVM.weekActivity[i] * 60).animation(.spring(response: 0.6, dampingFraction: 0.7).delay(Double(i) * 0.05), value: studyHomeVM.weekActivity[i]); Text(studyHomeVM.dayLabels[i]).font(.system(size: 10, weight: i == 2 ? .bold : .regular)).foregroundColor(i == 2 ? Color.zxPurple : Color.zxF03) }.frame(maxWidth: .infinity) } }
-                    HStack { Text("总计 3.5 小时").font(.system(size: 11)).foregroundColor(Color.zxF03); Spacer(); Text("日均 30 分钟").font(.system(size: 11)).foregroundColor(Color.zxF03) } }
-                .padding(.bottom, 120) }
-                .padding(.horizontal, 20) }
-                .scrollIndicators(.hidden)
-                .zxPullToRefresh { await studyVM.loadSessions() }
             }
-            .task { await studyVM.loadSessions() }
+            .scrollIndicators(.hidden)
-            .navigationDestination(for: Route.self) { $0.destination }
+            .zxPullToRefresh { await studyVM.loadSessions() }
+        }
+        .task { await studyVM.loadSessions() }
+        .navigationDestination(for: Route.self) { $0.destination }
     }
-    private var pc: some View { let dn = studyHomeVM.doneCount; let pct = CGFloat(dn) / 5
+
-        return VStack(spacing: 12) { HStack { VStack(alignment: .leading, spacing: 2) { Text("今日进度").font(.system(size: 13, weight: .medium)).foregroundColor(Color.zxF05); HStack(alignment: .lastTextBaseline, spacing: 6) { Text("\(dn)").font(.system(size: 26, weight: .black)).foregroundColor(Color.zxF0).contentTransition(.numericText()); Text("/ 5"); Text("个任务").font(.system(size: 14, weight: .medium)).foregroundColor(Color.zxF04) } }; Spacer()
+    // MARK: - Progress Card
-            ZStack { Circle().trim(from: 0, to: pct).stroke(ZXGradient.brand, style: StrokeStyle(lineWidth: 8, lineCap: .round)).rotationEffect(.degrees(-90)).frame(width: 64, height: 64).animation(.easeInOut(duration: 0.8), value: pct); Text("\(Int(pct * 100))%").font(.system(size: 14, weight: .heavy)).foregroundColor(Color.zxPurple).contentTransition(.numericText()) } }
+
-            ZStack(alignment: .leading) { RoundedRectangle(cornerRadius: 3).fill(Color.zxFill008).frame(height: 6); RoundedRectangle(cornerRadius: 3).fill(LinearGradient(colors: [Color.zxPurple, Color.zxAccent], startPoint: .leading, endPoint: .trailing)).frame(width: max(6, pct * (UIScreen.main.bounds.width - 72)), height: 6).animation(.easeInOut(duration: 0.6), value: pct) }
+    private var progressCard: some View {
-            HStack { VStack(alignment: .leading, spacing: 2) { Text("\(dn * 12) 分钟").font(.system(size: 13, weight: .bold)).foregroundColor(Color.zxF0); Text("已学").font(.system(size: 10)).foregroundColor(Color.zxF04) }; Spacer(); VStack(spacing: 2) { Text("\((5 - dn) * 11) 分钟").font(.system(size: 13, weight: .bold)).foregroundColor(Color.zxF0); Text("剩余").font(.system(size: 10)).foregroundColor(Color.zxF04) }; Spacer(); VStack(alignment: .trailing, spacing: 2) { Text("+5 点").font(.system(size: 13, weight: .bold)).foregroundColor(Color.zxF0); Text("掌握").font(.system(size: 10)).foregroundColor(Color.zxF04) } } }
+        let dn = studyHomeVM.doneCount
-            .padding(16).background(ZXGradient.progressCard).overlay(RoundedRectangle(cornerRadius: 20).stroke(Color(hex: "#7C6EFA", opacity: 0.15), lineWidth: 1)).clipShape(RoundedRectangle(cornerRadius: 20)) }
+        let pct = CGFloat(dn) / 5
+        return VStack(spacing: 12) {
+            HStack {
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("今日进度")
+                        .font(.system(size: 13, weight: .medium))
+                        .foregroundColor(Color.zxF05)
+                    HStack(alignment: .lastTextBaseline, spacing: 6) {
+                        Text("\(dn)")
+                            .font(.system(size: 26, weight: .black))
+                            .foregroundColor(Color.zxF0)
+                            .contentTransition(.numericText())
+                        Text("/ 5")
+                        Text("个任务")
+                            .font(.system(size: 14, weight: .medium))
+                            .foregroundColor(Color.zxF04)
+                    }
+                }
+                Spacer()
+                ZStack {
+                    Circle()
+                        .trim(from: 0, to: pct)
+                        .stroke(ZXGradient.brand, style: StrokeStyle(lineWidth: 8, lineCap: .round))
+                        .rotationEffect(.degrees(-90))
+                        .frame(width: 64, height: 64)
+                        .animation(.easeInOut(duration: 0.8), value: pct)
+                    Text("\(Int(pct * 100))%")
+                        .font(.system(size: 14, weight: .heavy))
+                        .foregroundColor(Color.zxPurple)
+                        .contentTransition(.numericText())
+                }
+            }
+            ZStack(alignment: .leading) {
+                RoundedRectangle(cornerRadius: 3)
+                    .fill(Color.zxFill008)
+                    .frame(height: 6)
+                RoundedRectangle(cornerRadius: 3)
+                    .fill(LinearGradient(colors: [Color.zxPurple, Color.zxAccent], startPoint: .leading, endPoint: .trailing))
+                    .frame(width: max(6, pct * (UIScreen.main.bounds.width - 72)), height: 6)
+                    .animation(.easeInOut(duration: 0.6), value: pct)
+            }
+            HStack {
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("\(dn * 12) 分钟")
+                        .font(.system(size: 13, weight: .bold))
+                        .foregroundColor(Color.zxF0)
+                    Text("已学")
+                        .font(.system(size: 10))
+                        .foregroundColor(Color.zxF04)
+                }
+                Spacer()
+                VStack(spacing: 2) {
+                    Text("\((5 - dn) * 11) 分钟")
+                        .font(.system(size: 13, weight: .bold))
+                        .foregroundColor(Color.zxF0)
+                    Text("剩余")
+                        .font(.system(size: 10))
+                        .foregroundColor(Color.zxF04)
+                }
+                Spacer()
+                VStack(alignment: .trailing, spacing: 2) {
+                    Text("+5 点")
+                        .font(.system(size: 13, weight: .bold))
+                        .foregroundColor(Color.zxF0)
+                    Text("掌握")
+                        .font(.system(size: 10))
+                        .foregroundColor(Color.zxF04)
+                }
+            }
+        }
+        .padding(16)
+        .background(ZXGradient.progressCard)
+        .overlay(RoundedRectangle(cornerRadius: 20).stroke(Color(hex: "#7C6EFA", opacity: 0.15), lineWidth: 1))
+        .clipShape(RoundedRectangle(cornerRadius: 20))
+        .padding(.horizontal, 20)
+    }
+
+    // MARK: - Daily Thinking Card
+
+    private var dailyThinkingCard: some View {
+        VStack(alignment: .leading, spacing: 14) {
+            HStack {
+                Image(systemName: "sparkles")
+                    .font(.system(size: 13))
+                    .foregroundColor(Color.zxPrimary)
+                    .frame(width: 30, height: 30)
+                    .background(Color.zxPrimarySoft)
+                    .clipShape(RoundedRectangle(cornerRadius: ZXRadius.sm))
+
+                Text("每日思考题")
+                    .font(.system(size: 14, weight: .semibold))
+                    .foregroundColor(Color.zxInkPrimary)
+
+                Spacer()
+
+                Text("待回答")
+                    .font(.system(size: 11, weight: .semibold))
+                    .foregroundColor(Color.zxAmberDeep)
+                    .padding(.horizontal, 8)
+                    .padding(.vertical, 3)
+                    .background(Color.zxAmberSoft)
+                    .clipShape(RoundedRectangle(cornerRadius: ZXRadius.xs))
+            }
+
+            Text("解释「注意力机制」在 Transformer 中的作用，不能使用搜索，用你自己的话说。")
+                .font(.system(size: 15, weight: .regular))
+                .foregroundColor(Color.zxInkPrimary)
+                .lineSpacing(6)
+
+            NavigationLink(value: Route.dailyThinking) {
+                HStack(spacing: 8) {
+                    Text("开始回答")
+                        .font(.system(size: 14, weight: .semibold))
+                    Image(systemName: "arrow.right")
+                        .font(.system(size: 12, weight: .semibold))
+                }
+                .foregroundColor(Color.zxOnPrimary)
+                .frame(maxWidth: .infinity)
+                .frame(height: 48)
+                .background(ZXGradient.brand)
+                .clipShape(RoundedRectangle(cornerRadius: ZXRadius.md))
+            }
+            .accessibilityLabel("开始回答每日思考题")
+        }
+        .padding(16)
+        .background(Color.zxSurfaceElevated)
+        .overlay(
+            RoundedRectangle(cornerRadius: ZXRadius.lg)
+                .stroke(Color.zxHairline, lineWidth: 0.5)
+        )
+        .clipShape(RoundedRectangle(cornerRadius: ZXRadius.lg))
+    }
+
 }
 
 struct ZXSTask: Identifiable { let id = UUID(); let t: String; let tp: String; let ch: String; let m: Int; var d: Bool; var c: Color { Color(hex: ch) } }