Add custom main tab bar with global scan-to-verify flow.

Introduce configurable custom TabBar with order badge, central scanner routing to verification orders, and update the migration checklist for recently completed modules.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/App/Navigation/NavigationRouter.swift

@@ -72,6 +72,7 @@ final class RouterPath {
 final class AppRouter {
     var selectedTab: AppTab = .home
     var selectedOrdersEntry: OrdersEntry = .storeOrders
+    private(set) var pendingOrderScanCode: String?
     private var routers: [AppTab: RouterPath] = [:]
 
     /// 获取指定 Tab 对应的路由路径容器，不存在时自动创建。
@@ -106,10 +107,24 @@ final class AppRouter {
         selectedTab = .orders
     }
 
+    /// 切换到核销订单入口，并暂存全局扫码结果等待订单页消费。
+    func routeToOrderVerification(scannedCode: String) {
+        pendingOrderScanCode = scannedCode
+        selectOrders(entry: .verificationOrders)
+    }
+
+    /// 读取并清空待处理的全局扫码结果，确保同一次扫码只被处理一次。
+    func consumePendingOrderScanCode() -> String? {
+        let code = pendingOrderScanCode
+        pendingOrderScanCode = nil
+        return code
+    }
+
     /// 重置主 Tab 选择和所有 Tab 的导航历史。
     func reset() {
         selectedTab = .home
         selectedOrdersEntry = .storeOrders
+        pendingOrderScanCode = nil
         routers.values.forEach { $0.reset() }
     }
 }