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suixinkan/Features/Main/Views/PlaceholderRootViews.swift

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+//
+//  PlaceholderRootViews.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/6/18.
+//
+
+import SwiftUI
+
+/// 首页根视图，占位承载后续首页迁移内容。
+struct HomeRootView: View {
+    var body: some View {
+        HomeView()
+    }
+}
+
+/// 订单根视图，占位承载后续订单模块迁移内容。
+struct OrdersRootView: View {
+    var body: some View {
+        PlaceholderTabRootView(title: "订单", systemImage: "doc.text")
+    }
+}
+
+/// 数据根视图，占位承载后续统计模块迁移内容。
+struct StatisticsRootView: View {
+    var body: some View {
+        PlaceholderTabRootView(title: "数据", systemImage: "chart.bar")
+    }
+}
+
+/// 我的根视图，当前承载个人信息页面。
+struct ProfileRootView: View {
+    var body: some View {
+        ProfileView()
+    }
+}
+
+/// 通用 Tab 占位视图，用于未迁移模块的临时入口。
+private struct PlaceholderTabRootView: View {
+    @Environment(RouterPath.self) private var router
+
+    let title: String
+    let systemImage: String
+
+    var body: some View {
+        VStack(spacing: 16) {
+            Image(systemName: systemImage)
+                .font(.system(size: 44, weight: .semibold))
+                .foregroundStyle(.tint)
+
+            Text(title)
+                .font(.title2.weight(.semibold))
+
+            Button {
+                router.navigate(to: .placeholder(title: "\(title)详情"))
+            } label: {
+                Label("打开详情", systemImage: "chevron.right")
+            }
+            .buttonStyle(.borderedProminent)
+        }
+        .frame(maxWidth: .infinity, maxHeight: .infinity)
+        .background(Color(.systemGroupedBackground))
+    }
+}
+
+/// 通用占位详情页，用于验证 Tab 内 NavigationStack 跳转。
+struct PlaceholderDetailView: View {
+    let title: String
+
+    var body: some View {
+        Text(title)
+            .font(.title3.weight(.medium))
+            .frame(maxWidth: .infinity, maxHeight: .infinity)
+            .background(Color(.systemGroupedBackground))
+            .navigationTitle(title)
+    }
+}