修复合作获客扫码绑定崩溃与 Toast 层级，并接入分成比例修改。

将扫码页提升到列表层弹出并补齐 AppDelegate.window，避免扫码时 UIKit 取主窗口崩溃；Toast 改用独立 UIWindow 显示在 sheet 之上；合作获客员支持短信验证修改分成比例，同时优化冷启动根视图创建时机并补充相关测试。

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

suixinkan/Features/CooperationOrder/ViewModels/BindAcquirerViewModel.swift

@@ -15,6 +15,7 @@ final class BindAcquirerViewModel: ObservableObject {
     @Published var isLoading = false
     @Published var isAlreadyBound = false
     @Published var errorMessage: String?
+    @Published var commissionRateDraft = ""
 
     private var saleUserId = 0
 
@@ -27,6 +28,7 @@ final class BindAcquirerViewModel: ObservableObject {
         if self.saleUserId == saleUserId && (inviteInfo != nil || isAlreadyBound) { return }
         self.saleUserId = saleUserId
         isAlreadyBound = false
+        commissionRateDraft = ""
         isLoading = true
         errorMessage = nil
         defer { isLoading = false }
@@ -54,10 +56,21 @@ final class BindAcquirerViewModel: ObservableObject {
         }
     }
 
+    /// 更新分账比例输入，只保留数字且最多 3 位。
+    func updateCommissionRateDraft(_ text: String) {
+        commissionRateDraft = String(text.filter(\.isNumber).prefix(3))
+    }
+
     /// 提交接受绑定。
     func acceptBind(api: CooperationOrderServing) async throws {
         guard saleUserId > 0, !isAlreadyBound else { return }
-        try await api.saleUserAcceptBind(saleUserId: saleUserId)
+        guard let commissionRate = Int(commissionRateDraft.trimmingCharacters(in: .whitespacesAndNewlines)) else {
+            throw CooperationOrderCommissionRateValidationError(message: "请输入分账比例")
+        }
+        guard (0...100).contains(commissionRate) else {
+            throw CooperationOrderCommissionRateValidationError(message: "分账比例需在0到100之间")
+        }
+        try await api.saleUserAcceptBind(saleUserId: saleUserId, commissionRate: commissionRate)
     }
 
     /// 处理绑定错误，识别已绑定状态。