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>

suixinkanTests/BindAcquirerViewModelTests.swift

@@ -0,0 +1,133 @@
+//
+//  BindAcquirerViewModelTests.swift
+//  suixinkanTests
+//
+//  Created by Codex on 2026/7/3.
+//
+
+import XCTest
+@testable import suixinkan
+
+/// 绑定获客员 ViewModel 分账比例校验测试。
+@MainActor
+final class BindAcquirerViewModelTests: XCTestCase {
+    /// 测试分账比例输入只保留数字且最多 3 位。
+    func testUpdateCommissionRateDraftFiltersInput() {
+        let viewModel = BindAcquirerViewModel()
+        viewModel.updateCommissionRateDraft("12a3.4")
+        XCTAssertEqual(viewModel.commissionRateDraft, "123")
+        viewModel.updateCommissionRateDraft("1234")
+        XCTAssertEqual(viewModel.commissionRateDraft, "123")
+    }
+
+    /// 测试未填写分账比例时提交失败。
+    func testAcceptBindRequiresCommissionRate() async {
+        let viewModel = BindAcquirerViewModel()
+        let api = BindAcquirerMockAPI()
+        await viewModel.load(api: api, saleUserId: 101)
+
+        do {
+            try await viewModel.acceptBind(api: api)
+            XCTFail("Expected validation error")
+        } catch let error as CooperationOrderCommissionRateValidationError {
+            XCTAssertEqual(error.message, "请输入分账比例")
+        } catch {
+            XCTFail("Unexpected error: \(error)")
+        }
+        XCTAssertEqual(api.acceptBindCalls.count, 0)
+    }
+
+    /// 测试分账比例超出范围时提交失败。
+    func testAcceptBindRejectsOutOfRangeCommissionRate() async {
+        let viewModel = BindAcquirerViewModel()
+        let api = BindAcquirerMockAPI()
+        await viewModel.load(api: api, saleUserId: 101)
+        viewModel.updateCommissionRateDraft("101")
+
+        do {
+            try await viewModel.acceptBind(api: api)
+            XCTFail("Expected validation error")
+        } catch let error as CooperationOrderCommissionRateValidationError {
+            XCTAssertEqual(error.message, "分账比例需在0到100之间")
+        } catch {
+            XCTFail("Unexpected error: \(error)")
+        }
+        XCTAssertEqual(api.acceptBindCalls.count, 0)
+    }
+
+    /// 测试合法分账比例时调用 accept-bind 接口。
+    func testAcceptBindPassesCommissionRateToAPI() async throws {
+        let viewModel = BindAcquirerViewModel()
+        let api = BindAcquirerMockAPI()
+        await viewModel.load(api: api, saleUserId: 101)
+        viewModel.updateCommissionRateDraft("20")
+
+        try await viewModel.acceptBind(api: api)
+
+        XCTAssertEqual(api.acceptBindCalls.count, 1)
+        XCTAssertEqual(api.acceptBindCalls.first?.saleUserId, 101)
+        XCTAssertEqual(api.acceptBindCalls.first?.commissionRate, 20)
+    }
+}
+
+@MainActor
+private final class BindAcquirerMockAPI: CooperationOrderServing {
+    struct AcceptBindCall {
+        let saleUserId: Int
+        let commissionRate: Int
+    }
+
+    var acceptBindCalls: [AcceptBindCall] = []
+
+    func cooperativeSalers(storeId: Int?, page: Int, pageSize: Int) async throws -> CooperativeSalerListPayload {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserInviteInfo(saleUserId: Int) async throws -> SaleUserInviteInfo {
+        SaleUserInviteInfo(
+            saleUserId: saleUserId,
+            salerName: "测试获客员",
+            salerPhone: "13800138000"
+        )
+    }
+
+    func saleUserAcceptBind(saleUserId: Int, commissionRate: Int) async throws {
+        acceptBindCalls.append(AcceptBindCall(saleUserId: saleUserId, commissionRate: commissionRate))
+    }
+
+    func saleUserReferralLeads(page: Int, pageSize: Int) async throws -> ListPayload<ReferralLead> {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserAcquisitionOrders(keyword: String?, page: Int, pageSize: Int) async throws -> ListPayload<AcquisitionOrder> {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserReferralOrders(saleUserId: Int, page: Int, pageSize: Int) async throws -> ReferralOrderListPayload {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserBindReferralOrder(orderNumber: String, referralOrderNo: String) async throws {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserUpdateReferralOrderStatus(id: Int, status: Int) async throws {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserUpdateRemark(saleUserId: Int, photogRemarkName: String) async throws {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserCommissionRateSendSmsCode(phone: String) async throws {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+
+    func saleUserUpdateCommissionRate(
+        saleUserId: Int,
+        commissionRate: Int,
+        smsCode: String
+    ) async throws -> CooperativeSaler {
+        fatalError("Not used in BindAcquirerViewModelTests")
+    }
+}