fix(tests): nonisolated deinit for MainActor back-deploy crash

GdeiAssistant-iOS/Features/Auth/Repositories/MockAuthRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockAuthRepository: AuthRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private let validUsername = "gdeiassistant"
     private let validPassword = "gdeiassistant"
 

GdeiAssistant-iOS/Features/Auth/ViewModels/LoginViewModel.swift

@@ -16,6 +16,10 @@ final class LoginViewModel: ObservableObject {
         self.authManager = authManager
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     var currentDataSourceMode: DataSourceMode {
         authManager.currentDataSourceMode
     }

GdeiAssistant-iOS/Features/CET/Repositories/MockCETRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockCETRepository: CETRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func fetchCaptchaImageBase64() async throws -> String {
         try await Task.sleep(nanoseconds: 120_000_000)
         return MockSeedData.cetCaptchaBase64

GdeiAssistant-iOS/Features/CET/ViewModels/CETViewModel.swift

@@ -19,6 +19,10 @@ final class CETViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard dashboard == nil else { return }
         await refreshCaptcha()

GdeiAssistant-iOS/Features/Card/Repositories/MockCardRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockCardRepository: CardRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private var isReportedLoss = false
 
     func fetchDashboard(on date: Date) async throws -> CampusCardDashboard {

GdeiAssistant-iOS/Features/Card/ViewModels/CardViewModel.swift

@@ -15,6 +15,10 @@ final class CardViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard dashboard == nil else { return }
         await loadDashboard()

GdeiAssistant-iOS/Features/Charge/Repositories/MockChargeRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockChargeRepository: ChargeRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func fetchCardInfo() async throws -> CampusCardDashboard {
         try await Task.sleep(for: .milliseconds(250))
         return CampusCardDashboard(

GdeiAssistant-iOS/Features/Charge/ViewModels/ChargeViewModel.swift

@@ -36,6 +36,10 @@ final class ChargeViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() {
         guard !hasLoaded else { return }
         hasLoaded = true

GdeiAssistant-iOS/Features/Collection/Repositories/MockCollectionRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockCollectionRepository: CollectionRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private var borrowedBooks: [CollectionBorrowItem] = [
         CollectionBorrowItem(id: "c_borrow_1", sn: "sn_1001", code: "code_1001", title: "iOS 架构设计实践", author: "王磊", borrowDate: "2026-03-01", returnDate: "2026-03-22", renewCount: 0),
         CollectionBorrowItem(id: "c_borrow_2", sn: "sn_1002", code: "code_1002", title: "数据库系统概论", author: "陈小华", borrowDate: "2026-02-24", returnDate: "2026-03-17", renewCount: 1)

GdeiAssistant-iOS/Features/Collection/ViewModels/CollectionViewModel.swift

@@ -22,6 +22,10 @@ final class CollectionViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func search() async {
         let trimmed = FormValidationSupport.trimmed(keyword)
         guard !trimmed.isEmpty else {

GdeiAssistant-iOS/Features/Community/Repositories/MockCommunityRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockCommunityRepository: CommunityRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private var likeCountOverrides: [String: Int] = [:]
     private var commentCountOverrides: [String: Int] = [:]
     private var addedComments: [String: [CommunityComment]] = [:]

GdeiAssistant-iOS/Features/Community/ViewModels/CommunityFeedViewModel.swift

@@ -15,6 +15,10 @@ final class CommunityFeedViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard !hasLoaded else { return }
         await loadPosts()

GdeiAssistant-iOS/Features/Community/ViewModels/PostDetailViewModel.swift

@@ -19,6 +19,10 @@ final class PostDetailViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard detail == nil else { return }
         await loadDetail()

GdeiAssistant-iOS/Features/Community/ViewModels/TopicFeedViewModel.swift

@@ -18,6 +18,10 @@ final class TopicFeedViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard topic == nil && posts.isEmpty else { return }
         await load()

GdeiAssistant-iOS/Features/DataCenter/Repositories/MockDataCenterRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockDataCenterRepository: DataCenterRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func queryElectricity(_ query: ElectricityQuery) async throws -> ElectricityBill {
         try await Task.sleep(nanoseconds: 180_000_000)
         guard FormValidationSupport.hasText(query.name), FormValidationSupport.hasText(query.studentNumber) else {

GdeiAssistant-iOS/Features/DataCenter/ViewModels/DataCenterViewModel.swift

@@ -14,6 +14,10 @@ final class ElectricityFeesViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     var availableYears: [Int] {
         ElectricityQuery.yearOptions
     }
@@ -53,6 +57,10 @@ final class YellowPageViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard categories.isEmpty else { return }
         await refresh()

GdeiAssistant-iOS/Features/Dating/Repositories/MockDatingRepository.swift

@@ -14,6 +14,10 @@ final class MockDatingRepository: DatingRepository {
         myProfiles = Self.makeMyProfiles()
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func fetchProfiles(filter: DatingFilter) async throws -> [DatingProfile] {
         hallProfiles.filter { $0.area == filter.area }
     }

GdeiAssistant-iOS/Features/Dating/ViewModels/DatingViewModel.swift

@@ -14,6 +14,10 @@ final class DatingHallViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard profiles.isEmpty else { return }
         await refresh()
@@ -66,6 +70,10 @@ final class DatingCenterViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadData() async {
         isLoading = true
         errorMessage = nil
@@ -126,6 +134,10 @@ final class PublishDatingViewModel: ObservableObject {
         self.profileRepository = profileRepository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     var isFormValid: Bool {
         !nickname.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty &&
         selectedFaculty != ProfileFormSupport.unselectedOption &&

GdeiAssistant-iOS/Features/Delivery/Repositories/MockDeliveryRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockDeliveryRepository: DeliveryRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private var orders: [DeliveryOrder] = [
         DeliveryOrder(orderID: "delivery_001", displayName: "gdeiassistant", name: mockLocalizedText(simplifiedChinese: "代收", traditionalChinese: "代收", english: "Parcel pickup", japanese: "代理受取", korean: "대리수령"), pickupCode: "51233444567", contactPhone: "13800138000", price: 4.50, company: mockLocalizedText(simplifiedChinese: "菜鸟驿站", traditionalChinese: "菜鳥驛站", english: "Cainiao Station", japanese: "菜鳥ステーション", korean: "차이냐오 스테이션"), address: mockLocalizedText(simplifiedChinese: "南苑 3 栋 508", traditionalChinese: "南苑 3 棟 508", english: "South Court Bldg 3 Room 508", japanese: "南苑3棟508", korean: "남원 3동 508호"), state: .pending, remarks: mockLocalizedText(simplifiedChinese: "课后再送", traditionalChinese: "課後再送", english: "Deliver after class", japanese: "授業後にお願いします", korean: "수업 후 전달 부탁"), orderTime: mockLocalizedText(simplifiedChinese: "10分钟前", traditionalChinese: "10分鐘前", english: "10 min ago", japanese: "10分前", korean: "10분 전")),
         DeliveryOrder(orderID: "delivery_002", displayName: "20230018", name: mockLocalizedText(simplifiedChinese: "代收", traditionalChinese: "代收", english: "Parcel pickup", japanese: "代理受取", korean: "대리수령"), pickupCode: "40399881234", contactPhone: "13911112222", price: 6.00, company: mockLocalizedText(simplifiedChinese: "东门快递点", traditionalChinese: "東門快遞點", english: "East Gate Parcel Point", japanese: "東門宅配受取所", korean: "동문 택배 보관소"), address: mockLocalizedText(simplifiedChinese: "北苑 6 栋 203", traditionalChinese: "北苑 6 棟 203", english: "North Court Bldg 6 Room 203", japanese: "北苑6棟203", korean: "북원 6동 203호"), state: .delivering, remarks: mockLocalizedText(simplifiedChinese: "到宿舍楼下联系", traditionalChinese: "到宿舍樓下聯繫", english: "Message me when you arrive downstairs", japanese: "寮の下に着いたら連絡してください", korean: "기숙사 아래 도착하면 연락 주세요"), orderTime: mockLocalizedText(simplifiedChinese: "40分钟前", traditionalChinese: "40分鐘前", english: "40 min ago", japanese: "40分前", korean: "40분 전"))

GdeiAssistant-iOS/Features/Delivery/ViewModels/DeliveryViewModel.swift

@@ -16,6 +16,10 @@ final class DeliveryViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard orders.isEmpty else { return }
         await refresh()
@@ -78,6 +82,10 @@ final class PublishDeliveryViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     var isFormValid: Bool {
         FormValidationSupport.hasText(pickupPlace) &&
         FormValidationSupport.hasText(phone) &&

GdeiAssistant-iOS/Features/Evaluate/Repositories/MockEvaluateRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockEvaluateRepository: EvaluateRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func submit(_ submission: EvaluateSubmission) async throws {
         try await Task.sleep(nanoseconds: 300_000_000)
         _ = submission

GdeiAssistant-iOS/Features/Evaluate/ViewModels/EvaluateViewModel.swift

@@ -13,6 +13,10 @@ final class EvaluateViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func requestSubmit() {
         showConfirm = true
     }

GdeiAssistant-iOS/Features/Express/Repositories/MockExpressRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockExpressRepository: ExpressRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private var posts: [ExpressPost] = [
         ExpressPost(
             id: "express_001",

GdeiAssistant-iOS/Features/Express/ViewModels/ExpressViewModel.swift

@@ -14,6 +14,10 @@ final class ExpressViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         guard posts.isEmpty else { return }
         await refresh()
@@ -93,6 +97,10 @@ final class PublishExpressViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     var isFormValid: Bool {
         FormValidationSupport.hasText(nickname) &&
         FormValidationSupport.hasText(targetName) &&

GdeiAssistant-iOS/Features/Grade/Repositories/MockGradeRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockGradeRepository: GradeRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func fetchGrades(yearIndex: Int?) async throws -> GradeReport {
         try await Task.sleep(nanoseconds: 280_000_000)
         let index = yearIndex ?? 3

GdeiAssistant-iOS/Features/Grade/ViewModels/GradeViewModel.swift

@@ -21,6 +21,10 @@ final class GradeViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         if report == nil {
             await loadGrades(yearIndex: Int(selectedYear))

GdeiAssistant-iOS/Features/GraduateExam/Repositories/MockGraduateExamRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockGraduateExamRepository: GraduateExamRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func queryScore(_ query: GraduateExamQuery) async throws -> GraduateExamScore {
         try await Task.sleep(nanoseconds: 180_000_000)
         guard FormValidationSupport.hasText(query.name), FormValidationSupport.hasText(query.examNumber), FormValidationSupport.hasText(query.idNumber) else {

GdeiAssistant-iOS/Features/GraduateExam/ViewModels/GraduateExamViewModel.swift

@@ -14,6 +14,10 @@ final class GraduateExamViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func submit() async {
         guard FormValidationSupport.hasText(query.name), FormValidationSupport.hasText(query.examNumber), FormValidationSupport.hasText(query.idNumber) else {
             errorMessage = localizedString("graduateExam.formIncomplete")

GdeiAssistant-iOS/Features/Home/ViewModels/HomeViewModel.swift

@@ -17,6 +17,10 @@ final class HomeViewModel: ObservableObject {
         self.now = now
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         if loadedScheduleDay != Self.campusCalendar.startOfDay(for: now()) {
             await loadTodaySchedule()

GdeiAssistant-iOS/Features/Library/Repositories/MockLibraryRepository.swift

@@ -2,6 +2,10 @@ import Foundation
 
 @MainActor
 final class MockLibraryRepository: LibraryRepository {
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     private let validPasswords: Set<String> = ["library123", "123456"]
     private var renewedRecordIDs: Set<String> = []
 

GdeiAssistant-iOS/Features/Library/ViewModels/LibraryViewModel.swift

@@ -21,6 +21,10 @@ final class LibraryViewModel: ObservableObject {
         self.repository = repository
     }
 
+    // No actor-bound cleanup. Avoid the iOS 26.2 MainActor isolated-deinit
+    // back-deployment crash on synchronous release (swiftlang/swift#87316).
+    nonisolated deinit {}
+
     func loadIfNeeded() async {
         if books.isEmpty {
             await searchBooks()