feat: 组合根装配会话与导航（Tab + 登录 + 提交页）

IosClientKit/Sources/App/AppRootView.swift

@@ -1,36 +1,73 @@
 import SwiftUI
-import CoreUI
 import FeatureAuth
+import FeatureCheckin
 import FeatureHome
+import FeaturePlan
+import FeatureProfile
 
 public struct AppRootView: View {
     @State private var homeViewModel: HomeViewModel
+    @State private var checkinViewModel: CheckinViewModel
+    @State private var planViewModel: PlanViewModel
+    @State private var profileViewModel: ProfileViewModel
+    @State private var authViewModel: AuthViewModel
+    @State private var selectedTab: AppTab = .home
+    @State private var isAuthPresented = false
 
     public init() {
         _homeViewModel = State(initialValue: AppContainer.makeHomeViewModel())
+        _checkinViewModel = State(initialValue: AppContainer.makeCheckinViewModel())
+        _planViewModel = State(initialValue: AppContainer.makePlanViewModel())
+        _profileViewModel = State(initialValue: AppContainer.makeProfileViewModel())
+        _authViewModel = State(initialValue: AppContainer.makeAuthViewModel())
     }
 
     public var body: some View {
-        TabView {
+        TabView(selection: $selectedTab) {
             NavigationStack {
-                HomeScreen(viewModel: homeViewModel)
+                HomeScreen(
+                    viewModel: homeViewModel,
+                    onNavigateToCheckin: { selectedTab = .checkin },
+                    onNavigateToPlan: { selectedTab = .plan },
+                    onNavigateToAuth: { isAuthPresented = true }
+                )
             }
             .tabItem { Label("首页", systemImage: "house.fill") }
+            .tag(AppTab.home)
 
             NavigationStack {
-                PlaceholderView("计划", systemImage: "calendar")
-            }
-            .tabItem { Label("计划", systemImage: "calendar") }
-
-            NavigationStack {
-                PlaceholderView("打卡", systemImage: "checkmark.seal.fill")
+                CheckinScreen(viewModel: checkinViewModel, onNavigateToAuth: { isAuthPresented = true })
             }
             .tabItem { Label("打卡", systemImage: "checkmark.seal.fill") }
+            .tag(AppTab.checkin)
 
             NavigationStack {
-                AuthScreen()
+                PlanScreen(
+                    viewModel: planViewModel,
+                    onNavigateToAuth: { isAuthPresented = true },
+                    makePlanSubmitViewModel: { type, periodKey in
+                        AppContainer.makePlanSubmitViewModel(type: type, periodKey: periodKey)
+                    }
+                )
+            }
+            .tabItem { Label("计划", systemImage: "calendar") }
+            .tag(AppTab.plan)
+
+            NavigationStack {
+                ProfileScreen(viewModel: profileViewModel, onNavigateToAuth: { isAuthPresented = true })
             }
             .tabItem { Label("我的", systemImage: "person.crop.circle") }
+            .tag(AppTab.profile)
+        }
+        .sheet(isPresented: $isAuthPresented) {
+            AuthScreen(viewModel: authViewModel, onLoggedIn: { isAuthPresented = false })
         }
     }
 }
+
+private enum AppTab: Hashable {
+    case home
+    case checkin
+    case plan
+    case profile
+}