Перевести FakeTelegramStore на NSubstitute

Хелпер Support/TestTelegramStore: словари каталога/превью + NSubstitute-подставка,
все методы порта читают состояние на момент вызова (семантика sync/upsert/
мониторов/бэкфилла сохранена). Потребители (5 файлов) перетипизированы на
.Store, фейк удалён, тесты 1340 зелёные.

src/core/tests/Deal.Tests.Unit/Api/TgStatusServiceTests.cs

@@ -42,7 +42,7 @@ public sealed class TgStatusServiceTests
     [Fact]
     public async Task GetAsync_GatewayUnavailable_ReturnsIdleFormWithKvAccountCountAndKeys()
     {
-        (TgStatusService service, FakeTelegramStore store, FakeSettingsStore settings, TestTelegramGateway gateway, _, TestGlobalSettingsStore globalSettings) = Create();
+        (TgStatusService service, TestTelegramStore store, FakeSettingsStore settings, TestTelegramGateway gateway, _, TestGlobalSettingsStore globalSettings) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true));
         store.Seed(Dialog("d_2", "Группа", "group", Monitor: true));
         store.Seed(Dialog("d_off", "Выключен", "channel", Monitor: false));
@@ -68,7 +68,7 @@ public sealed class TgStatusServiceTests
     [Fact]
     public async Task GetAsync_ReadyGateway_ComposesLiveFieldsWithKvAccountMonitoredAndKeys()
     {
-        (TgStatusService service, FakeTelegramStore store, FakeSettingsStore settings, TestTelegramGateway gateway, _, TestGlobalSettingsStore globalSettings) = Create();
+        (TgStatusService service, TestTelegramStore store, FakeSettingsStore settings, TestTelegramGateway gateway, _, TestGlobalSettingsStore globalSettings) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true));
         settings.Preload(SettingsKeys.TgAccount, "\"@realuser\"");
         PreloadKeys(globalSettings, "123456", "abcdefghijklmnop");
@@ -105,15 +105,15 @@ public sealed class TgStatusServiceTests
     // ─── Хелперы ────────────────────────────────────────────────────────────
 
     // Собирает сервис на фейках (FakeTelegramGateway/Store/SettingsStore/GlobalSettingsStore + FakeSecretCipher).
-    private static (TgStatusService Service, FakeTelegramStore Store, FakeSettingsStore Settings, TestTelegramGateway Gateway, FakeSecretCipher Cipher, TestGlobalSettingsStore GlobalSettings) Create()
+    private static (TgStatusService Service, TestTelegramStore Store, FakeSettingsStore Settings, TestTelegramGateway Gateway, FakeSecretCipher Cipher, TestGlobalSettingsStore GlobalSettings) Create()
     {
-        var store = new FakeTelegramStore();
+        var store = new TestTelegramStore();
         var settings = new FakeSettingsStore();
         var gateway = new TestTelegramGateway();
         var cipher = new FakeSecretCipher();
         var globalSettings = new TestGlobalSettingsStore();
         var keys = new TelegramKeysService(globalSettings.Store, cipher);
-        var dialogs = new DialogsService(store, settings, gateway.Gateway, NullLogger<DialogsService>.Instance);
+        var dialogs = new DialogsService(store.Store, settings, gateway.Gateway, NullLogger<DialogsService>.Instance);
         var service = new TgStatusService(gateway.Gateway, dialogs, settings, keys);
         return (service, store, settings, gateway, cipher, globalSettings);
     }

src/core/tests/Deal.Tests.Unit/Contracts/DialogsServiceTests.cs

@@ -21,7 +21,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task Sync_NewDialogsAutoMonitorNewDefaultTrue_TurnMonitoringOn()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
 
         int count = await service.SyncFromTelegramAsync(Catalog(
             Entry("d_1", "Канал", "channel"),
@@ -38,7 +38,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task Sync_AutoMonitorNewFalse_AddsNewDialogsUnmonitored()
     {
-        (DialogsService service, FakeTelegramStore store, FakeSettingsStore settings, _) = Create();
+        (DialogsService service, TestTelegramStore store, FakeSettingsStore settings, _) = Create();
         settings.Preload(SettingsKeys.AutoMonitorNew, "false");
 
         int count = await service.SyncFromTelegramAsync(Catalog(Entry("d_1", "Канал", "channel")), CancellationToken.None);
@@ -55,7 +55,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task Sync_ExistingDialog_UpdatesMetadataAndKeepsUserMonitor()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Старое имя", "channel", Monitor: false, Backfilled: true));
 
         await service.SyncFromTelegramAsync(
@@ -76,7 +76,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task Sync_DialogLeftCatalog_IsDeleted()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_left", "Ушёл", "channel", Monitor: true, Backfilled: true));
 
         int count = await service.SyncFromTelegramAsync(Catalog(Entry("d_stay", "Остался", "group")), CancellationToken.None);
@@ -93,7 +93,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task Sync_EmptyCatalog_ReturnsZeroAndKeepsRows()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: true));
 
         int count = await service.SyncFromTelegramAsync([], CancellationToken.None);
@@ -110,7 +110,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitor_EnableFirstTimeNotBackfilled_SetsFlagCallsGatewayAndNeedsBackfill()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: false, Backfilled: false));
 
         TelegramMonitorToggleDto result = await service.SetMonitorAsync("d_1", enabled: true, CancellationToken.None);
@@ -127,7 +127,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitor_EnableAlreadyBackfilled_NoBackfillNeeded()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: false, Backfilled: true));
 
         TelegramMonitorToggleDto result = await service.SetMonitorAsync("d_1", enabled: true, CancellationToken.None);
@@ -143,7 +143,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitor_Disable_TurnsOffAndNotifiesMirror()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: true));
 
         TelegramMonitorToggleDto result = await service.SetMonitorAsync("d_1", enabled: false, CancellationToken.None);
@@ -160,7 +160,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitor_UnknownDialog_NoOpWithoutGatewayCall()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
 
         TelegramMonitorToggleDto result = await service.SetMonitorAsync("missing", enabled: true, CancellationToken.None);
 
@@ -178,7 +178,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitorAll_Enable_ReturnsCountAndNotBackfilledIdsAndNotifiesMirror()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_a", "А", "channel", Monitor: false, Backfilled: true));
         store.Seed(Dialog("d_b", "Б", "channel", Monitor: false, Backfilled: false));
         store.Seed(Dialog("d_c", "В", "group", Monitor: false, Backfilled: false));
@@ -197,7 +197,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SetMonitorAll_Disable_TurnsAllOffAndEmptyBackfillList()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_a", "А", "channel", Monitor: true, Backfilled: false));
         store.Seed(Dialog("d_b", "Б", "channel", Monitor: true, Backfilled: true));
 
@@ -215,7 +215,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task MarkBackfilled_SetsFlagOnDialog()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
 
         await service.MarkBackfilledAsync("d_1", CancellationToken.None);
@@ -230,7 +230,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task ReadRecent_OneDialogFails_ContinuesWithOthersAndMarksOnlySuccessful()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
         store.Seed(Dialog("d_2", "Группа", "group", Monitor: true, Backfilled: false));
         store.Seed(Dialog("d_3", "Форум", "forum", Monitor: true, Backfilled: false));
@@ -251,7 +251,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task BackfillOne_UnknownOrAlreadyBackfilledWithoutForce_ReturnsZeroWithoutRpc()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_known", "Канал", "channel", Monitor: true, Backfilled: true));
         store.Seed(Dialog("d_fresh", "Группа", "group", Monitor: false, Backfilled: false));
 
@@ -272,7 +272,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task BackfillOne_ForceTrue_BackfillsAlreadyBackfilledDialogAndMarksAgain()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: true));
 
         int processed = await service.BackfillOneAsync("d_1", force: true, CancellationToken.None);
@@ -290,7 +290,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task ReadRecent_OnlyMonitoredDialogs_BackfillsEachMonitoredWithForce()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: true));
         store.Seed(Dialog("d_2", "Группа", "group", Monitor: true, Backfilled: false));
         store.Seed(Dialog("d_off", "Выключен", "channel", Monitor: false, Backfilled: false));
@@ -309,7 +309,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task ReadRecent_NoMonitoredDialogs_ReturnsZeroWithoutGatewayCalls()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_off", "Выключен", "channel", Monitor: false, Backfilled: false));
 
         int count = await service.ReadRecentAsync(CancellationToken.None);
@@ -326,7 +326,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task List_ReturnsMonitoredFirstByNameOrderWithLastMessage()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         DateTimeOffset lastAt = DateTimeOffset.UtcNow.AddMinutes(-5);
         store.Seed(Dialog("d_gamma", "Гамма", "channel", Monitor: true, Backfilled: true, LastText: "привет", LastAt: lastAt));
         store.Seed(Dialog("d_alpha", "Альфа", "group", Monitor: false, Backfilled: false));
@@ -352,7 +352,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SavePreview_PersistsPreviewRowAndTouchesDialogLast()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
         string longText = new('т', 5000);
         DateTimeOffset msgAt = DateTimeOffset.UtcNow.AddMinutes(-1);
@@ -375,7 +375,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SavePreview_EmptyText_DoesNotTouchStore()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
 
         await service.SavePreviewAsync("d_1", msgId: 7, "   ", DateTimeOffset.UtcNow, CancellationToken.None);
@@ -391,7 +391,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SavePreview_NoMsgId_UpdatesLastOnly()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
 
         await service.SavePreviewAsync("d_1", msgId: null, "Новое сообщение", null, CancellationToken.None);
@@ -407,7 +407,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task SavePreview_DuplicateMessageId_KeepsFirstRow()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
         store.Seed(Dialog("d_1", "Канал", "channel", Monitor: true, Backfilled: false));
         DateTimeOffset firstAt = DateTimeOffset.UtcNow.AddMinutes(-2);
 
@@ -426,7 +426,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task AddDiscoveredMonitored_NewDialog_CreatesMonitoredRowAndNotifiesMirror()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
 
         await service.AddDiscoveredMonitoredAsync("d_100", "Канал", "channel_handle", "channel", "#a33", CancellationToken.None);
 
@@ -447,7 +447,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task AddDiscoveredMonitored_ExistingDialog_UpdatesMetadataAndForcesMonitorOn()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         store.Seed(Dialog("d_100", "Старое имя", "group", Monitor: false, Backfilled: true));
 
         await service.AddDiscoveredMonitoredAsync("d_100", "Новое имя", "new_handle", "channel", "#c21", CancellationToken.None);
@@ -468,7 +468,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task AddDiscoveredMonitored_EmptyNameAndHue_FallBackToDialogIdAndDefaultHue()
     {
-        (DialogsService service, FakeTelegramStore store, _, _) = Create();
+        (DialogsService service, TestTelegramStore store, _, _) = Create();
 
         await service.AddDiscoveredMonitoredAsync("d_100", "   ", string.Empty, string.Empty, string.Empty, CancellationToken.None);
 
@@ -485,7 +485,7 @@ public sealed class DialogsServiceTests
     [Fact]
     public async Task AddDiscoveredMonitored_GatewayMirrorFails_RowStillWritten()
     {
-        (DialogsService service, FakeTelegramStore store, _, TestTelegramGateway gateway) = Create();
+        (DialogsService service, TestTelegramStore store, _, TestTelegramGateway gateway) = Create();
         gateway.SetMonitorFailures.Add("d_100");
 
         await service.AddDiscoveredMonitoredAsync("d_100", "Канал", string.Empty, "channel", "#666", CancellationToken.None);
@@ -496,13 +496,13 @@ public sealed class DialogsServiceTests
 
     // ─── Хелперы ────────────────────────────────────────────────────────────
 
-    // Собирает сервис на фейках (FakeTelegramStore — семантика адаптера; настройки/гейт чистые).
-    private static (DialogsService Service, FakeTelegramStore Store, FakeSettingsStore Settings, TestTelegramGateway Gateway) Create()
+    // Собирает сервис на фейках (TestTelegramStore — семантика адаптера; настройки/гейт чистые).
+    private static (DialogsService Service, TestTelegramStore Store, FakeSettingsStore Settings, TestTelegramGateway Gateway) Create()
     {
-        var store = new FakeTelegramStore();
+        var store = new TestTelegramStore();
         var settings = new FakeSettingsStore();
         var gateway = new TestTelegramGateway();
-        return (new DialogsService(store, settings, gateway.Gateway, NullLogger<DialogsService>.Instance), store, settings, gateway);
+        return (new DialogsService(store.Store, settings, gateway.Gateway, NullLogger<DialogsService>.Instance), store, settings, gateway);
     }
 
     // Строка каталога минимально (id/имя/kind + флаги/хвост каталога).

src/core/tests/Deal.Tests.Unit/Support/TelegramIngressServiceTests.cs

@@ -35,11 +35,11 @@ public sealed class TelegramIngressServiceTests
     public async Task SyncDialogs_KnownTenant_AppliesCatalogAndReturnsMonitoredIds()
     {
         var registry = TestRegistry.With(Tenant(TenantA));
-        var dialogs = new FakeTelegramStore();
+        var dialogs = new TestTelegramStore();
 
         await RunAsync(
             registry,
-            services => services.AddScoped<ITelegramStore>(_ => dialogs),
+            services => services.AddScoped<ITelegramStore>(_ => dialogs.Store),
             async channel =>
             {
                 var request = new SyncDialogsRequest();
@@ -63,14 +63,14 @@ public sealed class TelegramIngressServiceTests
         var registry = TestRegistry.With(Tenant(TenantA));
         var settings = new FakeSettingsStore();
         settings.Preload(SettingsKeys.AutoMonitorNew, "false");
-        var dialogs = new FakeTelegramStore();
+        var dialogs = new TestTelegramStore();
 
         await RunAsync(
             registry,
             services =>
             {
                 services.AddScoped<ISettingsStore>(_ => settings);
-                services.AddScoped<ITelegramStore>(_ => dialogs);
+                services.AddScoped<ITelegramStore>(_ => dialogs.Store);
             },
             async channel =>
             {

src/core/tests/Deal.Tests.Unit/Support/TelegramIngressTestHost.cs

@@ -100,7 +100,7 @@ internal static class TelegramIngressTestHost
             }
 
             builder.Services.AddScoped<ISettingsStore>(_ => new FakeSettingsStore());
-            builder.Services.AddScoped<ITelegramStore>(_ => new FakeTelegramStore());
+            builder.Services.AddScoped<ITelegramStore>(_ => new TestTelegramStore().Store);
             builder.Services.AddScoped<ITelegramGateway>(_ => new TestTelegramGateway().Gateway);
             builder.Services.AddTelegramModule();
 

src/core/tests/Deal.Tests.Unit/Support/TelegramSourceIngestObserverTests.cs

@@ -20,7 +20,7 @@ public sealed class TelegramSourceIngestObserverTests
     [Fact]
     public async Task OnIngestedAsync_KnownKind_SavesPreview()
     {
-        (TelegramSourceIngestObserver observer, FakeTelegramStore store) = Create();
+        (TelegramSourceIngestObserver observer, TestTelegramStore store) = Create();
         store.Seed(Dialog());
         DateTimeOffset receivedAt = DateTimeOffset.UtcNow.AddMinutes(-1);
 
@@ -40,7 +40,7 @@ public sealed class TelegramSourceIngestObserverTests
     [Fact]
     public async Task OnIngestedAsync_ForeignKind_DoesNotTouchStore()
     {
-        (TelegramSourceIngestObserver observer, FakeTelegramStore store) = Create();
+        (TelegramSourceIngestObserver observer, TestTelegramStore store) = Create();
         store.Seed(Dialog());
 
         await observer.OnIngestedAsync(Item("avito", DialogId, "7", "Текст", DateTimeOffset.UtcNow), CancellationToken.None);
@@ -56,7 +56,7 @@ public sealed class TelegramSourceIngestObserverTests
     [Fact]
     public async Task OnIngestedAsync_NoOriginRef_DoesNotTouchStore()
     {
-        (TelegramSourceIngestObserver observer, FakeTelegramStore store) = Create();
+        (TelegramSourceIngestObserver observer, TestTelegramStore store) = Create();
         store.Seed(Dialog());
 
         await observer.OnIngestedAsync(Item("telegram", null, "7", "Текст", DateTimeOffset.UtcNow), CancellationToken.None);
@@ -66,11 +66,11 @@ public sealed class TelegramSourceIngestObserverTests
     }
 
     // Собирает наблюдателя на фейковом хранилище диалогов.
-    private static (TelegramSourceIngestObserver Observer, FakeTelegramStore Store) Create()
+    private static (TelegramSourceIngestObserver Observer, TestTelegramStore Store) Create()
     {
-        var store = new FakeTelegramStore();
+        var store = new TestTelegramStore();
         var dialogs = new DialogsService(
-            store,
+            store.Store,
             new FakeSettingsStore(),
             new TestTelegramGateway().Gateway,
             NullLogger<DialogsService>.Instance);

src/core/tests/Deal.Tests.Unit/Support/TestTelegramStore.cs

@@ -1,28 +1,70 @@
 using Deal.Contracts.Integrations.Models;
 using Deal.Modules.Telegram.Application;
 using Deal.Modules.Telegram.Application.Models;
-using Deal.Tests.Unit.Support;
+using NSubstitute;
 
-namespace Deal.Tests.Unit.Contracts;
+namespace Deal.Tests.Unit.Support;
 
 /// <summary>
-/// In-memory реализация <see cref="ITelegramStore"/> для юнит-тестов DialogsService/ингресса.
+/// Подставка <see cref="ITelegramStore"/> на словарях: сервисы получают NSubstitute-подставку
+/// (<see cref="Store"/>), тесты сеют данные через <see cref="Seed"/>/<see cref="SeedMessage"/>
+/// и читают состояние через <see cref="Dialogs"/>/<see cref="Messages"/>.
 /// </summary>
-public sealed class FakeTelegramStore : ITelegramStore
+public sealed class TestTelegramStore
 {
     private readonly Dictionary<string, FakeTelegramDialogRow> _dialogs = new(StringComparer.Ordinal);
     private readonly Dictionary<string, FakeTelegramMessageRow> _messages = new(StringComparer.Ordinal);
 
     /// <summary>
-    /// Строки каталога фейка
+    /// Подставка порта Telegram-хранилища (создаётся в конструкторе).
+    /// </summary>
+    public ITelegramStore Store { get; }
+
+    /// <summary>
+    /// Строки каталога подставки
     /// </summary>
     public IReadOnlyList<FakeTelegramDialogRow> Dialogs => _dialogs.Values.ToList();
 
     /// <summary>
-    /// Строки превью фейка
+    /// Строки превью подставки
     /// </summary>
     public IReadOnlyList<FakeTelegramMessageRow> Messages => _messages.Values.ToList();
 
+    /// <summary>
+    /// Создаёт подставку с пустыми словарями.
+    /// </summary>
+    public TestTelegramStore()
+    {
+        Store = Substitute.For<ITelegramStore>();
+        Store.SyncFromTelegramAsync(Arg.Any<IReadOnlyCollection<TelegramDialogEntryDto>>(), Arg.Any<bool>(), Arg.Any<CancellationToken>())
+            .Returns(ci => SyncFromTelegram(
+                ci.ArgAt<IReadOnlyCollection<TelegramDialogEntryDto>>(0), ci.ArgAt<bool>(1)));
+        Store.ListAsync(Arg.Any<CancellationToken>()).Returns(ci => ListDialogs());
+        Store.ListMonitoredIdsAsync(Arg.Any<CancellationToken>()).Returns(ci => ListMonitoredIds());
+        Store.When(s => s.SetMonitorAsync(Arg.Any<string>(), Arg.Any<bool>(), Arg.Any<CancellationToken>()))
+            .Do(ci => SetMonitor(ci.ArgAt<string>(0), ci.ArgAt<bool>(1)));
+        Store.SetMonitorAllAsync(Arg.Any<bool>(), Arg.Any<CancellationToken>())
+            .Returns(ci => SetMonitorAll(ci.ArgAt<bool>(0)));
+        Store.GetBackfilledAsync(Arg.Any<string>(), Arg.Any<CancellationToken>())
+            .Returns(ci => GetBackfilled(ci.ArgAt<string>(0)));
+        Store.ListNotBackfilledIdsAsync(Arg.Any<CancellationToken>()).Returns(ci => ListNotBackfilledIds());
+        Store.When(s => s.SetBackfilledAsync(Arg.Any<string>(), Arg.Any<CancellationToken>()))
+            .Do(ci => SetBackfilled(ci.ArgAt<string>(0)));
+        Store.When(s => s.UpsertDiscoveredMonitoredAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<CancellationToken>()))
+            .Do(ci => UpsertDiscoveredMonitored(
+                ci.ArgAt<string>(0), ci.ArgAt<string>(1), ci.ArgAt<string>(2), ci.ArgAt<string>(3), ci.ArgAt<string>(4)));
+        Store.When(s => s.SavePreviewAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<DateTimeOffset>(), Arg.Any<CancellationToken>()))
+            .Do(ci => SavePreview(
+                ci.ArgAt<string>(0), ci.ArgAt<string>(1), ci.ArgAt<string>(2), ci.ArgAt<DateTimeOffset>(3)));
+        Store.When(s => s.TouchDialogLastAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<DateTimeOffset>(), Arg.Any<CancellationToken>()))
+            .Do(ci => TouchDialogLast(ci.ArgAt<string>(0), ci.ArgAt<string>(1), ci.ArgAt<DateTimeOffset>(2)));
+        Store.ListMessagesAsync(Arg.Any<string>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(ci => ListMessages(ci.ArgAt<string>(0), ci.ArgAt<int>(1)));
+    }
+
     /// <summary>
     /// Кладёт строку каталога напрямую
     /// </summary>
@@ -41,15 +83,11 @@ public sealed class FakeTelegramStore : ITelegramStore
         _messages[row.Id] = row;
     }
 
-    /// <inheritdoc />
-    public Task<int> SyncFromTelegramAsync(
-        IReadOnlyCollection<TelegramDialogEntryDto> entries,
-        bool autoMonitorNew,
-        CancellationToken ct)
+    private int SyncFromTelegram(IReadOnlyCollection<TelegramDialogEntryDto> entries, bool autoMonitorNew)
     {
         if (entries.Count == 0)
         {
-            return Task.FromResult(0);
+            return 0;
         }
 
         DateTimeOffset now = DateTimeOffset.UtcNow;
@@ -81,47 +119,36 @@ public sealed class FakeTelegramStore : ITelegramStore
             _dialogs.Remove(id);
         }
 
-        return Task.FromResult(entries.Count);
+        return entries.Count;
     }
 
-    /// <inheritdoc />
-    public Task<IReadOnlyList<TelegramDialogDto>> ListAsync(CancellationToken ct)
+    private IReadOnlyList<TelegramDialogDto> ListDialogs()
     {
-        IReadOnlyList<TelegramDialogDto> items = _dialogs.Values
+        return _dialogs.Values
             .OrderByDescending(row => row.Monitor)
             .ThenBy(row => row.Name)
             .Select(ToDialogDto)
             .ToList();
-        return Task.FromResult(items);
     }
 
-    /// <inheritdoc />
-    public Task<IReadOnlyCollection<string>> ListMonitoredIdsAsync(CancellationToken ct)
+    private IReadOnlyCollection<string> ListMonitoredIds()
     {
-        IReadOnlyCollection<string> ids = _dialogs.Values
+        return _dialogs.Values
             .Where(row => row.Monitor)
             .OrderBy(row => row.Id)
             .Select(row => row.Id)
             .ToList();
-        return Task.FromResult(ids);
     }
 
-    /// <inheritdoc />
-    public Task SetMonitorAsync(
-        string dialogId,
-        bool enabled,
-        CancellationToken ct)
+    private void SetMonitor(string dialogId, bool enabled)
     {
         if (_dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? existing))
         {
             _dialogs[dialogId] = existing with { Monitor = enabled, UpdatedAt = DateTimeOffset.UtcNow };
         }
-
-        return Task.CompletedTask;
     }
 
-    /// <inheritdoc />
-    public Task<int> SetMonitorAllAsync(bool enabled, CancellationToken ct)
+    private int SetMonitorAll(bool enabled)
     {
         int count = _dialogs.Count;
         DateTimeOffset now = DateTimeOffset.UtcNow;
@@ -130,50 +157,32 @@ public sealed class FakeTelegramStore : ITelegramStore
             _dialogs[id] = _dialogs[id] with { Monitor = enabled, UpdatedAt = now };
         }
 
-        return Task.FromResult(count);
+        return count;
     }
 
-    /// <inheritdoc />
-    public Task<bool?> GetBackfilledAsync(string dialogId, CancellationToken ct)
+    private bool? GetBackfilled(string dialogId)
     {
-        if (_dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? row))
-        {
-            return Task.FromResult<bool?>(row.Backfilled);
-        }
-
-        return Task.FromResult<bool?>(null);
+        return _dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? row) ? row.Backfilled : null;
     }
 
-    /// <inheritdoc />
-    public Task<IReadOnlyCollection<string>> ListNotBackfilledIdsAsync(CancellationToken ct)
+    private IReadOnlyCollection<string> ListNotBackfilledIds()
     {
-        IReadOnlyCollection<string> ids = _dialogs.Values
+        return _dialogs.Values
             .Where(row => !row.Backfilled)
             .OrderBy(row => row.Id)
             .Select(row => row.Id)
             .ToList();
-        return Task.FromResult(ids);
     }
 
-    /// <inheritdoc />
-    public Task SetBackfilledAsync(string dialogId, CancellationToken ct)
+    private void SetBackfilled(string dialogId)
     {
         if (_dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? existing))
         {
             _dialogs[dialogId] = existing with { Backfilled = true };
         }
-
-        return Task.CompletedTask;
     }
 
-    /// <inheritdoc />
-    public Task UpsertDiscoveredMonitoredAsync(
-        string dialogId,
-        string name,
-        string handle,
-        string kind,
-        string hue,
-        CancellationToken ct)
+    private void UpsertDiscoveredMonitored(string dialogId, string name, string handle, string kind, string hue)
     {
         if (_dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? existing))
         {
@@ -194,54 +203,32 @@ public sealed class FakeTelegramStore : ITelegramStore
                 dialogId, name, handle, kind, hue,
                 Monitor: true, LastText: string.Empty, LastAt: null, Backfilled: false, UpdatedAt: DateTimeOffset.UtcNow);
         }
-
-        return Task.CompletedTask;
     }
 
-    /// <inheritdoc />
-    public Task SavePreviewAsync(
-        string messageId,
-        string dialogId,
-        string text,
-        DateTimeOffset msgAt,
-        CancellationToken ct)
+    private void SavePreview(string messageId, string dialogId, string text, DateTimeOffset msgAt)
     {
         if (!_messages.ContainsKey(messageId))
         {
             _messages[messageId] = new FakeTelegramMessageRow(messageId, dialogId, text, msgAt, LeadId: null);
         }
-
-        return Task.CompletedTask;
     }
 
-    /// <inheritdoc />
-    public Task TouchDialogLastAsync(
-        string dialogId,
-        string text,
-        DateTimeOffset at,
-        CancellationToken ct)
+    private void TouchDialogLast(string dialogId, string text, DateTimeOffset at)
     {
         if (_dialogs.TryGetValue(dialogId, out FakeTelegramDialogRow? existing))
         {
             _dialogs[dialogId] = existing with { LastText = text, LastAt = at, UpdatedAt = at };
         }
-
-        return Task.CompletedTask;
     }
 
-    /// <inheritdoc />
-    public Task<IReadOnlyList<TelegramMessageDto>> ListMessagesAsync(
-        string dialogId,
-        int limit,
-        CancellationToken ct)
+    private IReadOnlyList<TelegramMessageDto> ListMessages(string dialogId, int limit)
     {
-        IReadOnlyList<TelegramMessageDto> items = _messages.Values
+        return _messages.Values
             .Where(row => row.DialogId == dialogId)
             .OrderByDescending(row => row.MsgAt)
             .Take(limit)
             .Select(row => new TelegramMessageDto(row.Id, row.Text, row.MsgAt.ToUnixTimeMilliseconds(), row.LeadId is not null))
             .ToList();
-        return Task.FromResult(items);
     }
 
     private static TelegramDialogDto ToDialogDto(FakeTelegramDialogRow row)