feat: 新增应用设置功能及相关视图

- 在MainFeature中集成AppSettingFeature，支持应用设置页面的导航与状态管理。
- 新增AppSettingView以展示用户头像和昵称编辑功能，提升用户体验。
- 更新MainView以支持应用设置页面的展示，增强导航功能。

yana/Features/AppSettingFeature.swift

@@ -0,0 +1,27 @@
+import Foundation
+import ComposableArchitecture
+
+struct AppSettingFeature: Reducer {
+    struct State: Equatable {
+        var nickname: String = "hahahaha"
+        var avatarURL: String? = nil
+    }
+    enum Action: Equatable {
+        case onAppear
+        case editNicknameTapped
+        case logoutTapped
+        // 可扩展更多 action
+    }
+    func reduce(into state: inout State, action: Action) -> Effect<Action> {
+        switch action {
+        case .onAppear:
+            return .none
+        case .editNicknameTapped:
+            // 预留编辑昵称逻辑
+            return .none
+        case .logoutTapped:
+            // 预留登出逻辑
+            return .none
+        }
+    }
+} 

yana/Features/MainFeature.swift

@@ -15,12 +15,14 @@ struct MainFeature: Reducer {
         // 新增：导航路径和设置页面 State
         var navigationPath: [Destination] = []
         var settingState: SettingFeature.State? = nil
+        var appSettingState: AppSettingFeature.State? = nil
     }
     
     // 新增：导航目标
     enum Destination: Hashable, Equatable {
         case setting
         case test
+        case appSetting
     }
     
     @CasePathable
@@ -35,6 +37,8 @@ struct MainFeature: Reducer {
         case settingButtonTapped
         case settingAction(SettingFeature.Action)
         case testButtonTapped
+        case appSettingButtonTapped
+        case appSettingAction(AppSettingFeature.Action)
     }
     
     var body: some ReducerOf<Self> {
@@ -66,8 +70,8 @@ struct MainFeature: Reducer {
                 return .none
             case .me(.settingButtonTapped):
                 // 触发 push 到设置页
-                state.settingState = SettingFeature.State()
+                state.appSettingState = AppSettingFeature.State()
-                state.navigationPath.append(.setting)
+                state.navigationPath.append(.appSetting)
                 return .none
             case .me:
                 return .none
@@ -76,6 +80,9 @@ struct MainFeature: Reducer {
                 if !newPath.contains(.setting) {
                     state.settingState = nil
                 }
+                if !newPath.contains(.appSetting) {
+                    state.appSettingState = nil
+                }
                 state.navigationPath = newPath
                 return .none
             case .settingButtonTapped:
@@ -87,11 +94,20 @@ struct MainFeature: Reducer {
             case .testButtonTapped:
                 state.navigationPath.append(.test)
                 return .none
+            case .appSettingButtonTapped:
+                state.appSettingState = AppSettingFeature.State()
+                state.navigationPath.append(.appSetting)
+                return .none
+            case .appSettingAction:
+                return .none
             }
         }
         // 设置页作用域
         .ifLet(\ .settingState, action: /Action.settingAction) {
             SettingFeature()
         }
+        .ifLet(\ .appSettingState, action: /Action.appSettingAction) {
+            AppSettingFeature()
+        }
     }
 } 

yana/Views/AppSettingView.swift

@@ -0,0 +1,98 @@
+import SwiftUI
+import ComposableArchitecture
+
+struct AppSettingView: View {
+    let store: StoreOf<AppSettingFeature>
+    
+    var body: some View {
+        WithViewStore(self.store, observe: { $0 }) { viewStore in
+            ZStack {
+                Color(red: 22/255, green: 17/255, blue: 44/255).ignoresSafeArea()
+                VStack(spacing: 0) {
+                    Spacer().frame(height: 24)
+                    // 顶部标题
+                    Text("Edit")
+                        .font(.system(size: 22, weight: .semibold))
+                        .foregroundColor(.white)
+                        .padding(.top, 8)
+                    // 头像
+                    ZStack(alignment: .bottomTrailing) {
+                        Image("avatar_placeholder")
+                            .resizable()
+                            .aspectRatio(contentMode: .fill)
+                            .frame(width: 120, height: 120)
+                            .clipShape(Circle())
+                        Button(action: {}) {
+                            ZStack {
+                                Circle().fill(Color.purple).frame(width: 36, height: 36)
+                                Image(systemName: "camera.fill")
+                                    .foregroundColor(.white)
+                            }
+                        }
+                        .offset(x: 8, y: 8)
+                    }
+                    .padding(.top, 24)
+                    // 昵称
+                    HStack {
+                        Text("Nickname")
+                            .foregroundColor(.white)
+                        Spacer()
+                        Text(viewStore.nickname)
+                            .foregroundColor(.gray)
+                        Image(systemName: "chevron.right")
+                            .foregroundColor(.gray)
+                    }
+                    .padding(.horizontal, 32)
+                    .padding(.vertical, 18)
+                    .onTapGesture {
+                        viewStore.send(.editNicknameTapped)
+                    }
+                    Divider().background(Color.gray.opacity(0.3))
+                        .padding(.horizontal, 32)
+                    // 其他设置项
+                    VStack(spacing: 0) {
+                        settingRow("Personal Information and Permissions")
+                        settingRow("Help")
+                        settingRow("Clear Cache")
+                        settingRow("Check for Updates")
+                        settingRow("Log Out")
+                        settingRow("About Us")
+                    }
+                    .background(Color.clear)
+                    .padding(.horizontal, 0)
+                    Spacer()
+                    // 底部大按钮
+                    Button(action: {
+                        viewStore.send(.logoutTapped)
+                    }) {
+                        Text("Log out of account")
+                            .font(.system(size: 18, weight: .semibold))
+                            .foregroundColor(.white)
+                            .frame(maxWidth: .infinity)
+                            .padding(.vertical, 18)
+                            .background(Color.white.opacity(0.08))
+                            .cornerRadius(28)
+                            .padding(.horizontal, 32)
+                    }
+                    .padding(.bottom, 32)
+                }
+            }
+        }
+    }
+    // 设置项行
+    func settingRow(_ title: String) -> some View {
+        return VStack(spacing: 0) {
+            HStack {
+                Text(title)
+                    .foregroundColor(.white)
+                Spacer()
+                Image(systemName: "chevron.right")
+                    .foregroundColor(.gray)
+            }
+            .padding(.horizontal, 32)
+            .padding(.vertical, 18)
+            Divider().background(Color.gray.opacity(0.3))
+                .padding(.horizontal, 32)
+        }
+    }
+} 

yana/Views/MainView.swift

@@ -78,6 +78,18 @@ struct MainView: View {
                         )
                     case .test:
                         TestPushView()
+                    case .appSetting:
+                        IfLetStore(
+                            self.store.scope(
+                                state: \.appSettingState,
+                                action: MainFeature.Action.appSettingAction
+                            ),
+                            then: { appSettingStore in
+                                WithPerceptionTracking {
+                                    AppSettingView(store: appSettingStore)
+                                }
+                            }
+                        )
                     }
                 }
             }