diff --git a/src/core/tests/Deal.Tests.Unit/Api/DiscoveryWorkerSchedulerTests.cs b/src/core/tests/Deal.Tests.Unit/Api/DiscoveryWorkerSchedulerTests.cs
index e954560..68fc2e1 100644
--- a/src/core/tests/Deal.Tests.Unit/Api/DiscoveryWorkerSchedulerTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Api/DiscoveryWorkerSchedulerTests.cs
@@ -104,7 +104,7 @@ public sealed class DiscoveryWorkerSchedulerTests
         var services = new ServiceCollection();
         services.AddSingleton<ITenantContext>(tenantContext);
         services.AddSingleton<ITenantRepository>(tenants.Repository);
-        services.AddSingleton<IMlClient>(new FakeMlClient());
+        services.AddSingleton<IMlClient>(new TestMlClient().Client);
         services.AddSingleton<IAiTools>(_ => TestAiTools.New());
         // Тенант-scoped адаптеры: фейк выбирает хранилище по ITenantContext, который цикл заполняет SetTenant
         // (эталон PipelineWorkerSchedulerTests/ConnectionStringProvider.ForTenant).
diff --git a/src/core/tests/Deal.Tests.Unit/Api/RuntimeDepthsCollectorTests.cs b/src/core/tests/Deal.Tests.Unit/Api/RuntimeDepthsCollectorTests.cs
index 7fe73cc..f2dba86 100644
--- a/src/core/tests/Deal.Tests.Unit/Api/RuntimeDepthsCollectorTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Api/RuntimeDepthsCollectorTests.cs
@@ -154,7 +154,7 @@ public sealed class RuntimeDepthsCollectorTests
             }).ToArray()).Repository);
 
         services.AddScoped<IPipelineStore>(provider => pipelineByTenant[CurrentTenant(provider)]);
-        services.AddScoped<IMlClient>(_ => new FakeMlClient());
+        services.AddScoped<IMlClient>(_ => new TestMlClient().Client);
         services.AddScoped<PipelineIngestService>();
         services.AddScoped<PipelineProcessingService>();
         services.AddScoped<IMlLearningStore>(provider => outboxByTenant[CurrentTenant(provider)]);
@@ -172,4 +172,4 @@ public sealed class RuntimeDepthsCollectorTests
         ITenantContext context = provider.GetRequiredService<ITenantContext>();
         return context.TenantId!.Value.Value;
     }
-}
\ No newline at end of file
+}
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/CardsServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Contracts/CardsServiceTests.cs
index 8ae48b4..4c5e0c1 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/CardsServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Contracts/CardsServiceTests.cs
@@ -84,7 +84,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_ToBoard_WritesJournalAndPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", "inbox", sourceMsg: "Нужен Python-разработчик"));
 
@@ -105,7 +105,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_ToInbox_WritesJournalWithoutPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", "b_py", sourceMsg: "Нужен Python-разработчик", prevCol: "inbox"));
 
@@ -124,7 +124,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_ToUnknownBoard_Returns400Text()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", "inbox", sourceMsg: "Нужен Python-разработчик"));
 
         CardResultDto result = await service.MoveDashboardCardAsync("l_1", "b_ghost", CancellationToken.None);
@@ -148,7 +148,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_CardMissing_ReturnsNullLead()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py"));
 
         CardResultDto result = await service.MoveDashboardCardAsync("l_ghost", "b_py", CancellationToken.None);
@@ -162,7 +162,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_SameColumn_NoOpWithoutJournalAndPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", "b_py", sourceMsg: "Нужен Python-разработчик", isNew: true));
 
@@ -179,7 +179,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_ToBoardWithoutRules_MatchHitsEmptyButPushSent()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_free")); // правил нет
         store.SeedCard(Card("l_1", "inbox", sourceMsg: "Любой текст"));
 
@@ -195,7 +195,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_FromBoardToBoard_PrevColIsOldBoardAndPushNewLabel()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_java", Rules(stack: new[] { "java" })));
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", "b_java", sourceMsg: "Нужен Java-разработчик", prevCol: "inbox"));
@@ -214,7 +214,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_EmptySourceText_UsesTitleForMatchHitsAndPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", "inbox", title: "Middle Python-разработчик", sourceMsg: "  "));
 
@@ -228,7 +228,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_EmptySourceAndTitle_JournalWithoutPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py"));
         store.SeedCard(Card("l_1", "inbox"));
 
@@ -263,7 +263,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_FromArchive_Returns400AndWritesNothing()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py"));
         store.SeedCard(Card("l_1", KanbanColumns.Archive, sourceMsg: "Старая вакансия", prevCol: "b_py"));
 
@@ -279,7 +279,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Move_FromTrash_Returns400AndWritesNothing()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py"));
         store.SeedCard(Card("l_1", KanbanColumns.Trash, sourceMsg: "Спам-текст", prevCol: "b_py"));
 
@@ -296,7 +296,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Trash_FromInbox_MovesToTrashWithJournalAndSpamPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", "inbox", sourceMsg: "Предлагаю услуги продвижения", isNew: true));
 
         CardDto? result = await service.TrashCardAsync("l_1", CancellationToken.None);
@@ -318,7 +318,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Trash_AlreadyInTrash_NoOpWithoutJournalAndPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", KanbanColumns.Trash, sourceMsg: "Текст"));
 
         CardDto? result = await service.TrashCardAsync("l_1", CancellationToken.None);
@@ -331,7 +331,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Trash_FromArchive_WritesJournalWithoutPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", KanbanColumns.Archive, sourceMsg: "Старая карточка", prevCol: "b_py"));
 
         CardDto? result = await service.TrashCardAsync("l_1", CancellationToken.None);
@@ -346,7 +346,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Trash_CardMissing_ReturnsNull()
     {
-        (CardsService service, _, _, FakeMlClient ml) = Create();
+        (CardsService service, _, _, TestMlClient ml) = Create();
 
         CardDto? result = await service.TrashCardAsync("l_ghost", CancellationToken.None);
 
@@ -358,7 +358,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Restore_FromTrash_ToPrevColBoard_UnlearnsSpam()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py", Rules(stack: new[] { "python" })));
         store.SeedCard(Card("l_1", KanbanColumns.Trash, sourceMsg: "Нужен Python-разработчик", prevCol: "b_py"));
 
@@ -383,7 +383,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Restore_FromArchive_NoPush()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedBoard(Board("b_py"));
         store.SeedCard(Card("l_1", KanbanColumns.Archive, sourceMsg: "Старая карточка", prevCol: "b_py"));
 
@@ -399,7 +399,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Restore_FromTrash_PrevColDeletedBoard_FallsBackToInbox()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", KanbanColumns.Trash, sourceMsg: "Текст", prevCol: "b_gone"));
 
         string? back = await service.RestoreCardAsync("l_1", CancellationToken.None);
@@ -618,7 +618,7 @@ public sealed class CardsServiceTests
     [Fact]
     public async Task Counts_ColumnsNewAndMlStats()
     {
-        (CardsService service, FakeKanjStore store, _, FakeMlClient ml) = Create();
+        (CardsService service, FakeKanjStore store, _, TestMlClient ml) = Create();
         store.SeedCard(Card("l_1", "inbox", isNew: true));
         store.SeedCard(Card("l_2", "inbox"));
         store.SeedCard(Card("l_3", "b_py"));
@@ -711,12 +711,12 @@ public sealed class CardsServiceTests
 
     // ─── Хелперы ──────────────────────────────────────────────────────────
 
-    private static (CardsService Service, FakeKanjStore Store, FakeSettingsStore Settings, FakeMlClient Ml) Create()
+    private static (CardsService Service, FakeKanjStore Store, FakeSettingsStore Settings, TestMlClient Ml) Create()
     {
         var store = new FakeKanjStore();
         var settings = new FakeSettingsStore();
-        var ml = new FakeMlClient();
-        return (new CardsService(store, settings, ml, new TestFileStorage().Storage), store, settings, ml);
+        var ml = new TestMlClient();
+        return (new CardsService(store, settings, ml.Client, new TestFileStorage().Storage), store, settings, ml);
     }
 
     // Доска с правилами (ContainerRulesDto) либо без них.
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryEvaluatorTests.cs b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryEvaluatorTests.cs
index 3520c6e..fb8b4e1 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryEvaluatorTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryEvaluatorTests.cs
@@ -30,7 +30,7 @@ public sealed class DiscoveryEvaluatorTests
     [Fact]
     public async Task EvaluateMessage_MlSpam_NotFit()
     {
-        (DiscoveryEvaluator evaluator, _, FakeMlClient ml, _) = Create(aiEnabled: false, mlEnabled: true);
+        (DiscoveryEvaluator evaluator, _, TestMlClient ml, _) = Create(aiEnabled: false, mlEnabled: true);
         ml.Predict = new MlPredictResultDto(
             Take: true, Label: "spam", Scores: new Dictionary<string, double>(), Hits: 3, Ready: true, Margin: 0.9,
             Terms: Array.Empty<string>(), Type: null);
@@ -46,7 +46,7 @@ public sealed class DiscoveryEvaluatorTests
     [Fact]
     public async Task EvaluateMessage_AiFits_ReturnsAiVerdict()
     {
-        (DiscoveryEvaluator evaluator, _, FakeMlClient ml, IAiTools ai) = Create(aiEnabled: true, mlEnabled: false);
+        (DiscoveryEvaluator evaluator, _, TestMlClient ml, IAiTools ai) = Create(aiEnabled: true, mlEnabled: false);
         ai.ReturnsFit(new AiEvaluateFitResultDto(Fit: true, "тема совпадает"));
 
         DiscoveryMessageFit fit = await evaluator.EvaluateMessageAsync(
@@ -168,14 +168,14 @@ public sealed class DiscoveryEvaluatorTests
         => new(id, text, DateMs: 1_700_000_000_000 + id, topic, TopicTitle: null);
 
     // Создаёт оценщик на фейках: флаги веток выставляются сценарием.
-    private static (DiscoveryEvaluator Evaluator, FakeSettingsStore Settings, FakeMlClient Ml, IAiTools Ai) Create(bool aiEnabled, bool mlEnabled)
+    private static (DiscoveryEvaluator Evaluator, FakeSettingsStore Settings, TestMlClient Ml, IAiTools Ai) Create(bool aiEnabled, bool mlEnabled)
     {
         var settings = new FakeSettingsStore();
         settings.Preload(SettingsKeys.AiEnabled, aiEnabled ? "true" : "false");
         settings.Preload(SettingsKeys.MlEnabled, mlEnabled ? "true" : "false");
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         var ai = TestAiTools.New();
-        return (new DiscoveryEvaluator(settings, ml, ai), settings, ml, ai);
+        return (new DiscoveryEvaluator(settings, ml.Client, ai), settings, ml, ai);
     }
 
     // Задача как строка DiscTasks (адаптер-форма; нужны только keywords/description/threshold).
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
index 698a23a..6e3d55a 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
@@ -432,7 +432,7 @@ public sealed class DiscoveryWorkerServiceTests
         var settings = new FakeSettingsStore();
         settings.Preload(SettingsKeys.MlEnabled, "false");
         settings.Preload(SettingsKeys.AiEnabled, "false");
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         var ai = TestAiTools.New();
         var log = new DiscoveryLogService(store.Store);
         var blacklist = new DiscoveryBlacklistService(store.Store);
@@ -443,7 +443,7 @@ public sealed class DiscoveryWorkerServiceTests
         var pacer = Substitute.For<IDiscoveryPacer>();
         var gateway = new TestDiscoveryGateway();
         var worker = new DiscoveryWorkerService(
-            store.Store, tasks, candidates, log, new DiscoveryEvaluator(settings, ml, ai), banGuard, pacer, gateway.Gateway);
+            store.Store, tasks, candidates, log, new DiscoveryEvaluator(settings, ml.Client, ai), banGuard, pacer, gateway.Gateway);
         return new Fixture(store, settings, gateway, pacer, worker, tasks);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/PipelineWorkerGrpcAiTests.cs b/src/core/tests/Deal.Tests.Unit/Contracts/PipelineWorkerGrpcAiTests.cs
index 4ea2314..834776d 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/PipelineWorkerGrpcAiTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Contracts/PipelineWorkerGrpcAiTests.cs
@@ -167,7 +167,7 @@ public sealed class PipelineWorkerGrpcAiTests
         var settings = new FakeSettingsStore();
         var pipelineStore = new TestPipelineStore();
         var kanjStore = new FakeKanjStore();
-        var mlClient = new FakeMlClient { Predict = NotReadyPrediction() };
+        var mlClient = new TestMlClient { Predict = NotReadyPrediction() };
         var rules = new IncomingRules(settings);
         var fieldsParser = new LocalFieldsParser(settings);
 
@@ -192,11 +192,11 @@ public sealed class PipelineWorkerGrpcAiTests
                 NullLogger<BudgetedAiClassifier>.Instance)
             : grpcClassifier;
 
-        var processing = new PipelineProcessingService(pipelineStore.Store, mlClient, new PipelineIngestService(pipelineStore.Store));
+        var processing = new PipelineProcessingService(pipelineStore.Store, mlClient.Client, new PipelineIngestService(pipelineStore.Store));
         var composer = new CardComposer(kanjStore, settings);
         var writer = new PipelineCardWriter(kanjStore, pipelineStore.Store, composer);
         var worker = new PipelineWorkerService(
-            pipelineStore.Store, settings, rules, kanjStore, mlClient, aiClassifier, processing, writer, fieldsParser);
+            pipelineStore.Store, settings, rules, kanjStore, mlClient.Client, aiClassifier, processing, writer, fieldsParser);
         return new Context(worker, pipelineStore, kanjStore, settings, limits);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Infrastructure/CardMoverTests.cs b/src/core/tests/Deal.Tests.Unit/Infrastructure/CardMoverTests.cs
index a44505c..96baee1 100644
--- a/src/core/tests/Deal.Tests.Unit/Infrastructure/CardMoverTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Infrastructure/CardMoverTests.cs
@@ -82,7 +82,7 @@ public sealed class CardMoverTests
     private static (CardMover Mover, FakeKanjStore Store) Create()
     {
         var store = new FakeKanjStore();
-        var cardsService = new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), new TestFileStorage().Storage);
+        var cardsService = new CardsService(store, new FakeSettingsStore(), new TestMlClient().Client, new TestFileStorage().Storage);
         return (new CardMover(cardsService), store);
     }
 }
diff --git a/src/core/tests/Deal.Tests.Unit/Modules/Kanban/CardsServiceRemindersTests.cs b/src/core/tests/Deal.Tests.Unit/Modules/Kanban/CardsServiceRemindersTests.cs
index af636eb..3f99402 100644
--- a/src/core/tests/Deal.Tests.Unit/Modules/Kanban/CardsServiceRemindersTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Modules/Kanban/CardsServiceRemindersTests.cs
@@ -195,7 +195,7 @@ public sealed class CardsServiceRemindersTests
             settings.Preload(SettingsKeys.RemindersEnabled, "false");
         }
 
-        return (new CardsService(store, settings, new FakeMlClient(), new TestFileStorage().Storage), store, settings);
+        return (new CardsService(store, settings, new TestMlClient().Client, new TestFileStorage().Storage), store, settings);
     }
 
     // Текущее время в epoch-мс (UTC) — для посева напоминаний в прошлом/будущем.
diff --git a/src/core/tests/Deal.Tests.Unit/Modules/Kanban/MlReviewServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Modules/Kanban/MlReviewServiceTests.cs
index 757fa62..ce11110 100644
--- a/src/core/tests/Deal.Tests.Unit/Modules/Kanban/MlReviewServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Modules/Kanban/MlReviewServiceTests.cs
@@ -21,13 +21,13 @@ public sealed class MlReviewServiceTests
     private static MlReviewService Create(
         TestPipelineStore pipeline,
         FakeKanjStore kanj,
-        FakeMlClient ml,
+        TestMlClient ml,
         out CardsService cards)
     {
         var settings = new FakeSettingsStore();
-        cards = new CardsService(kanj, settings, ml, new TestFileStorage().Storage);
-        var processing = new PipelineProcessingService(pipeline.Store, ml, new PipelineIngestService(pipeline.Store));
-        return new MlReviewService(pipeline.Store, kanj, cards, processing, ml);
+        cards = new CardsService(kanj, settings, ml.Client, new TestFileStorage().Storage);
+        var processing = new PipelineProcessingService(pipeline.Store, ml.Client, new PipelineIngestService(pipeline.Store));
+        return new MlReviewService(pipeline.Store, kanj, cards, processing, ml.Client);
     }
 
     private static QueueItemDto QueueRow(
@@ -78,7 +78,7 @@ public sealed class MlReviewServiceTests
         pipeline.SeedRejected(RejectedRow(102, "из отсева"));
         var kanj = new FakeKanjStore();
         kanj.SeedCard(Card(103, "из карточки"));
-        MlReviewService service = Create(pipeline, kanj, new FakeMlClient(), out _);
+        MlReviewService service = Create(pipeline, kanj, new TestMlClient(), out _);
 
         IReadOnlyList<MlCandidateDto> items = await service.CandidatesAsync(Dialog, 10, CancellationToken.None);
 
@@ -97,7 +97,7 @@ public sealed class MlReviewServiceTests
         var pipeline = new TestPipelineStore();
         pipeline.SeedQueue(QueueRow(101, "нужный", Dialog));
         pipeline.SeedQueue(QueueRow(201, "другой", "d_2"));
-        MlReviewService service = Create(pipeline, new FakeKanjStore(), new FakeMlClient(), out _);
+        MlReviewService service = Create(pipeline, new FakeKanjStore(), new TestMlClient(), out _);
 
         IReadOnlyList<MlCandidateDto> items = await service.CandidatesAsync(Dialog, 10, CancellationToken.None);
 
@@ -111,7 +111,7 @@ public sealed class MlReviewServiceTests
         var pipeline = new TestPipelineStore();
         pipeline.SeedQueue(QueueRow(101, "a", "d_1"));
         pipeline.SeedQueue(QueueRow(201, "b", "d_2"));
-        MlReviewService service = Create(pipeline, new FakeKanjStore(), new FakeMlClient(), out _);
+        MlReviewService service = Create(pipeline, new FakeKanjStore(), new TestMlClient(), out _);
 
         IReadOnlyList<MlCandidateDto> items = await service.CandidatesAsync(null, 10, CancellationToken.None);
 
@@ -127,7 +127,7 @@ public sealed class MlReviewServiceTests
             pipeline.SeedQueue(QueueRow(100 + i, $"текст {i}"));
         }
 
-        MlReviewService service = Create(pipeline, new FakeKanjStore(), new FakeMlClient(), out _);
+        MlReviewService service = Create(pipeline, new FakeKanjStore(), new TestMlClient(), out _);
 
         IReadOnlyList<MlCandidateDto> items = await service.CandidatesAsync(Dialog, 2, CancellationToken.None);
 
@@ -139,7 +139,7 @@ public sealed class MlReviewServiceTests
     {
         var pipeline = new TestPipelineStore();
         pipeline.SeedQueue(QueueRow(101, "текст"));
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         MlReviewService service = Create(pipeline, new FakeKanjStore(), ml, out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, MlReviewService.ActionSkip, CancellationToken.None);
@@ -156,7 +156,7 @@ public sealed class MlReviewServiceTests
     {
         var kanj = new FakeKanjStore();
         kanj.SeedCard(Card(101, "спамный текст"));
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         MlReviewService service = Create(new TestPipelineStore(), kanj, ml, out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, MlReviewService.ActionSpam, CancellationToken.None);
@@ -174,7 +174,7 @@ public sealed class MlReviewServiceTests
     {
         var pipeline = new TestPipelineStore();
         pipeline.SeedQueue(QueueRow(101, "рекламный текст"));
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         MlReviewService service = Create(pipeline, new FakeKanjStore(), ml, out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, MlReviewService.ActionSpam, CancellationToken.None);
@@ -201,7 +201,7 @@ public sealed class MlReviewServiceTests
             Kind = ContainerKinds.Board,
         });
         kanj.SeedCard(Card(101, "python разработчик"));
-        var ml = new FakeMlClient();
+        var ml = new TestMlClient();
         MlReviewService service = Create(new TestPipelineStore(), kanj, ml, out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, "board:b_py", CancellationToken.None);
@@ -218,7 +218,7 @@ public sealed class MlReviewServiceTests
     {
         var kanj = new FakeKanjStore();
         kanj.SeedCard(Card(101, "текст"));
-        MlReviewService service = Create(new TestPipelineStore(), kanj, new FakeMlClient(), out _);
+        MlReviewService service = Create(new TestPipelineStore(), kanj, new TestMlClient(), out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, "board:missing", CancellationToken.None);
 
@@ -232,7 +232,7 @@ public sealed class MlReviewServiceTests
     {
         var pipeline = new TestPipelineStore();
         pipeline.SeedQueue(QueueRow(101, "текст"));
-        MlReviewService service = Create(pipeline, new FakeKanjStore(), new FakeMlClient(), out _);
+        MlReviewService service = Create(pipeline, new FakeKanjStore(), new TestMlClient(), out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 101, "что-то", CancellationToken.None);
 
@@ -244,7 +244,7 @@ public sealed class MlReviewServiceTests
     [Fact]
     public async Task Apply_MessageNotFound_ReturnsNull()
     {
-        MlReviewService service = Create(new TestPipelineStore(), new FakeKanjStore(), new FakeMlClient(), out _);
+        MlReviewService service = Create(new TestPipelineStore(), new FakeKanjStore(), new TestMlClient(), out _);
 
         MlApplyResult? result = await service.ApplyAsync(Dialog, 999, MlReviewService.ActionSpam, CancellationToken.None);
 
diff --git a/src/core/tests/Deal.Tests.Unit/Modules/Pipeline/PipelineProcessingServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Modules/Pipeline/PipelineProcessingServiceTests.cs
index a0d8c0a..1e96f9a 100644
--- a/src/core/tests/Deal.Tests.Unit/Modules/Pipeline/PipelineProcessingServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Modules/Pipeline/PipelineProcessingServiceTests.cs
@@ -168,7 +168,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_RecordNotFound_ReturnsNull()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
 
         RejectReturnResultDto? result = await service.ReturnAsync("r_missing", string.Empty, CancellationToken.None);
 
@@ -180,7 +180,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_AlreadyReturned_Returns400()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected("r_1", returned: true, returnReason: "было"));
 
         RejectReturnResultDto? result = await service.ReturnAsync("r_1", "ещё раз", CancellationToken.None);
@@ -195,7 +195,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_DuplicateSource_Returns400()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected("r_1", decidedBy: "dup", stage: "dup"));
 
         RejectReturnResultDto? result = await service.ReturnAsync("r_1", string.Empty, CancellationToken.None);
@@ -209,7 +209,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_EmptyText_Returns400()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected("r_1", text: "   "));
 
         RejectReturnResultDto? result = await service.ReturnAsync("r_1", string.Empty, CancellationToken.None);
@@ -223,7 +223,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_SpamStage_UnlearnsSpamMarksRecordAndEnqueuesForceRow()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected(
             "r_1",
             text: "  Продвижение в каналах  ",
@@ -270,7 +270,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_NonSpamStage_NoLearningPushButEnqueuesForceRow()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected(
             "r_1",
             text: "Короткое сообщение",
@@ -309,7 +309,7 @@ public sealed class PipelineProcessingServiceTests
     [Fact]
     public async Task ReturnAsync_NoSourceInfo_EnqueuesDirectlyWithDefaultHue()
     {
-        (PipelineProcessingService service, FakePipelineStore store, FakeMlClient ml) = Create();
+        (PipelineProcessingService service, FakePipelineStore store, TestMlClient ml) = Create();
         store.SeedRejected(Rejected(
             "r_old",
             text: "Старая запись без ссылки на исходное",
@@ -382,11 +382,11 @@ public sealed class PipelineProcessingServiceTests
     // ─── Помощники ──────────────────────────────────────────────────────────
 
     // Сервис на общих фейках: очередь/отсев и ML-клиент одного сценария.
-    private static (PipelineProcessingService Service, FakePipelineStore Store, FakeMlClient Ml) Create()
+    private static (PipelineProcessingService Service, FakePipelineStore Store, TestMlClient Ml) Create()
     {
         FakePipelineStore store = new();
-        FakeMlClient ml = new();
-        PipelineProcessingService service = new(store, ml, new PipelineIngestService(store));
+        TestMlClient ml = new();
+        PipelineProcessingService service = new(store, ml.Client, new PipelineIngestService(store));
         return (service, store, ml);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Support/AdminTickOrchestratorTests.cs b/src/core/tests/Deal.Tests.Unit/Support/AdminTickOrchestratorTests.cs
index 6e04a29..6a70087 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/AdminTickOrchestratorTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/AdminTickOrchestratorTests.cs
@@ -3,6 +3,7 @@ using Deal.Api.Dtos;
 using Deal.Api.Events;
 using Deal.Api.Services;
 using Deal.Contracts.Integrations.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Kanban.Application.Models;
 using Deal.Modules.Kanban.Application.Services;
 using Deal.Modules.Pipeline.Application.Models;
@@ -195,7 +196,7 @@ public sealed class AdminTickOrchestratorTests
 
     // Собирает оркестратор на общих фейках: StorageTickService и воркер делят KanjStore/Settings,
     // обработка и воркер — PipelineStore, напоминания — тот же KanjStore/Settings (CardsService);
-    // ML «не готов» (FakeMlClient.Predict не задан → сбой → «не уверен»).
+    // ML «не готов» (TestMlClient.Predict не задан → сбой → «не уверен»).
     // withThrowingQueueRead: true — чтение очереди воркером бросает (сценарий сбоя pump).
     // withThrowingReminderCheck: true — выборка due-напоминаний бросает (сценарий сбоя проверки).
     // Возвращает: Оркестратор, фейки и подписку канала тенанта.
@@ -211,23 +212,23 @@ public sealed class AdminTickOrchestratorTests
                     throw new InvalidOperationException("Тестовый сбой чтения очереди (ListAsync)."));
         }
         var kanjStore = new FakeKanjStore();
-        var mlClient = new FakeMlClient();
+        var mlClient = new TestMlClient();
         var aiClassifier = new TestAiClassifier();
         var rules = new IncomingRules(settings);
         var fieldsParser = new LocalFieldsParser(settings);
         var ingest = new PipelineIngestService(store.Store);
-        var processing = new PipelineProcessingService(store.Store, mlClient, ingest);
+        var processing = new PipelineProcessingService(store.Store, mlClient.Client, ingest);
         var composer = new CardComposer(kanjStore, settings);
         var writer = new PipelineCardWriter(kanjStore, store.Store, composer);
         var worker = new PipelineWorkerService(
-            store.Store, settings, rules, kanjStore, mlClient, aiClassifier.Classifier, processing, writer, fieldsParser);
+            store.Store, settings, rules, kanjStore, mlClient.Client, aiClassifier.Classifier, processing, writer, fieldsParser);
 
         var broker = new SseBroker();
         var tickService = new StorageTickService(kanjStore, settings);
         var toastPublisher = new StorageToastPublisher(broker);
         var pumpGate = new PipelinePumpGate();
         FakeKanjStore reminderStore = withThrowingReminderCheck ? new ThrowingDueKanjStore() : kanjStore;
-        var cardsService = new CardsService(reminderStore, settings, mlClient, new TestFileStorage().Storage);
+        var cardsService = new CardsService(reminderStore, settings, mlClient.Client, new TestFileStorage().Storage);
         var orchestrator = new AdminTickOrchestrator(
             tickService, processing, worker, cardsService, toastPublisher, broker, pumpGate,
             NullLogger<AdminTickOrchestrator>.Instance);
diff --git a/src/core/tests/Deal.Tests.Unit/Support/CardReclassifierTests.cs b/src/core/tests/Deal.Tests.Unit/Support/CardReclassifierTests.cs
index 900cd3f..6123faa 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/CardReclassifierTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/CardReclassifierTests.cs
@@ -1,5 +1,6 @@
 using System.Text.Json;
 using Deal.Contracts.Integrations.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Cards.Application.Sources;
 using Deal.Modules.Kanban.Application.Models;
 using Deal.Modules.Kanban.Application.Services;
@@ -23,7 +24,7 @@ public sealed class CardReclassifierTests
         CardReclassifier Reclassifier,
         FakeKanjStore Store,
         FakeSettingsStore Settings,
-        FakeMlClient MlClient,
+        TestMlClient MlClient,
         TestAiClassifier AiClassifier,
         ReclassifyGate Gate);
 
@@ -33,14 +34,14 @@ public sealed class CardReclassifierTests
     {
         var settings = new FakeSettingsStore();
         var store = new FakeKanjStore();
-        var mlClient = new FakeMlClient();
+        var mlClient = new TestMlClient();
         var aiClassifier = new TestAiClassifier();
         var fieldsParser = new LocalFieldsParser(settings);
         var composer = new CardComposer(store, settings);
-        var cardsService = new CardsService(store, settings, mlClient, new TestFileStorage().Storage);
+        var cardsService = new CardsService(store, settings, mlClient.Client, new TestFileStorage().Storage);
         var gate = new ReclassifyGate();
         var reclassifier = new CardReclassifier(
-            store, settings, aiClassifier.Classifier, fieldsParser, composer, cardsService, mlClient, gate);
+            store, settings, aiClassifier.Classifier, fieldsParser, composer, cardsService, mlClient.Client, gate);
         return new Context(reclassifier, store, settings, mlClient, aiClassifier, gate);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Support/CardsServiceFilesTests.cs b/src/core/tests/Deal.Tests.Unit/Support/CardsServiceFilesTests.cs
index 11ad5f7..fb54620 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/CardsServiceFilesTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/CardsServiceFilesTests.cs
@@ -242,7 +242,7 @@ public sealed class CardsServiceFilesTests
     {
         var store = new FakeKanjStore();
         var storage = new TestFileStorage();
-        return (new CardsService(store, new FakeSettingsStore(), new FakeMlClient(), storage.Storage), store, storage);
+        return (new CardsService(store, new FakeSettingsStore(), new TestMlClient().Client, storage.Storage), store, storage);
     }
 
     // Карточка с полями по умолчанию (planned, CreatedAtMs=1, UpdatedAtMs=1; Files пуст).
diff --git a/src/core/tests/Deal.Tests.Unit/Support/CardsServiceSelectedTests.cs b/src/core/tests/Deal.Tests.Unit/Support/CardsServiceSelectedTests.cs
index 75765cb..8e2969d 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/CardsServiceSelectedTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/CardsServiceSelectedTests.cs
@@ -531,12 +531,12 @@ public sealed class CardsServiceSelectedTests
 
     // ─── Хелперы ──────────────────────────────────────────────────────────
 
-    private static (CardsService Service, FakeKanjStore Store, FakeSettingsStore Settings, FakeMlClient Ml) Create()
+    private static (CardsService Service, FakeKanjStore Store, FakeSettingsStore Settings, TestMlClient Ml) Create()
     {
         var store = new FakeKanjStore();
         var settings = new FakeSettingsStore();
-        var ml = new FakeMlClient();
-        return (new CardsService(store, settings, ml, new TestFileStorage().Storage), store, settings, ml);
+        var ml = new TestMlClient();
+        return (new CardsService(store, settings, ml.Client, new TestFileStorage().Storage), store, settings, ml);
     }
 
     // Тело PATCH из пар «ключ → значение» (presence = наличие пары; null — явный JSON-null).
diff --git a/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerSchedulerTests.cs b/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerSchedulerTests.cs
index 6e70d73..06d1752 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerSchedulerTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerSchedulerTests.cs
@@ -3,6 +3,7 @@ using Deal.Api.Events;
 using Deal.Api.Services;
 using Deal.Contracts.Integrations.Abstractions;
 using Deal.Contracts.Integrations.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Infrastructure.Data;
 using Deal.Modules.Kanban.Application.Abstractions;
 using Deal.Modules.Kanban.Application.Models;
@@ -167,7 +168,7 @@ public sealed class PipelineWorkerSchedulerTests
         services.AddSingleton<SseBroker>();
         services.AddSingleton<ITenantRepository>(tenants.Repository);
         services.AddSingleton(pumpGate);
-        services.AddSingleton<IMlClient>(new FakeMlClient());
+        services.AddSingleton<IMlClient>(new TestMlClient().Client);
         services.AddSingleton<IAiClassifier>(aiClassifier.Classifier);
         // Тенант-scoped адаптеры: фейк выбирает хранилище по ITenantContext, который цикл заполняет SetTenant
         // (эталон StorageTickSchedulerTests/ConnectionStringProvider.ForTenant).
diff --git a/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerServiceTests.cs
index 110df58..c053e42 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/PipelineWorkerServiceTests.cs
@@ -1,5 +1,6 @@
 using System.Text.Json;
 using Deal.Contracts.Integrations.Models;
+using Deal.Tests.Unit.Support;
 using Deal.Modules.Kanban.Application.Models;
 using Deal.Modules.Pipeline.Application.Models;
 using Deal.Modules.Pipeline.Application.Parse;
@@ -27,7 +28,7 @@ public sealed class PipelineWorkerServiceTests
         TestPipelineStore PipelineStore,
         FakeKanjStore KanjStore,
         FakeSettingsStore Settings,
-        FakeMlClient MlClient,
+        TestMlClient MlClient,
         TestAiClassifier AiClassifier);
 
     // Собирает контекст: дефолты настроек/досок, ML «не готов» (как LocalMlClient), ИИ-фильтр пропускает.
@@ -38,15 +39,15 @@ public sealed class PipelineWorkerServiceTests
         var settings = new FakeSettingsStore();
         var store = pipelineStore ?? new TestPipelineStore();
         var kanjStore = new FakeKanjStore();
-        var mlClient = new FakeMlClient { Predict = NotReadyPrediction() };
+        var mlClient = new TestMlClient { Predict = NotReadyPrediction() };
         var aiClassifier = new TestAiClassifier();
         var rules = new IncomingRules(settings);
         var fieldsParser = new LocalFieldsParser(settings);
-        var processing = new PipelineProcessingService(store.Store, mlClient, new PipelineIngestService(store.Store));
+        var processing = new PipelineProcessingService(store.Store, mlClient.Client, new PipelineIngestService(store.Store));
         var composer = new CardComposer(kanjStore, settings);
         var writer = new PipelineCardWriter(kanjStore, store.Store, composer);
         var worker = new PipelineWorkerService(
-            store.Store, settings, rules, kanjStore, mlClient, aiClassifier.Classifier, processing, writer, fieldsParser);
+            store.Store, settings, rules, kanjStore, mlClient.Client, aiClassifier.Classifier, processing, writer, fieldsParser);
         return new Context(worker, store, kanjStore, settings, mlClient, aiClassifier);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Support/StorageTickSchedulerTests.cs b/src/core/tests/Deal.Tests.Unit/Support/StorageTickSchedulerTests.cs
index 22e6d47..2f582aa 100644
--- a/src/core/tests/Deal.Tests.Unit/Support/StorageTickSchedulerTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/StorageTickSchedulerTests.cs
@@ -322,7 +322,7 @@ public sealed class StorageTickSchedulerTests
         services.AddScoped<ICardStore>(provider => storesByTenant[TenantOf(provider)]);
         services.AddScoped<ISettingsStore>(provider => settingsByTenant[TenantOf(provider)]);
         services.AddScoped<IPipelineStore>(provider => pipelineStoresByTenant[TenantOf(provider)].Store);
-        services.AddSingleton<IMlClient>(new FakeMlClient());
+        services.AddSingleton<IMlClient>(new TestMlClient().Client);
         services.AddSingleton<IFileStorage>(new TestFileStorage().Storage);
         services.AddScoped<PipelineIngestService>();
         services.AddScoped<PipelineProcessingService>();
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/FakeMlClient.cs b/src/core/tests/Deal.Tests.Unit/Support/TestMlClient.cs
similarity index 54%
rename from src/core/tests/Deal.Tests.Unit/Contracts/FakeMlClient.cs
rename to src/core/tests/Deal.Tests.Unit/Support/TestMlClient.cs
index 38dde69..15ccccb 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/FakeMlClient.cs
+++ b/src/core/tests/Deal.Tests.Unit/Support/TestMlClient.cs
@@ -1,15 +1,22 @@
 using Deal.Contracts.Integrations.Abstractions;
 using Deal.Contracts.Integrations.Models;
+using NSubstitute;
 
-namespace Deal.Tests.Unit.Contracts;
+namespace Deal.Tests.Unit.Support;
 
 /// <summary>
-/// In-memory реализация <see cref="IMlClient"/> для unit-тестов CardsService и воркера pump.
+/// Подставка <see cref="IMlClient"/>: сервисы получают NSubstitute-подставку (<see cref="Client"/>),
+/// тесты управляют сценариями через свойства (как раньше — через фейк).
 /// </summary>
-public sealed class FakeMlClient : IMlClient
+public sealed class TestMlClient
 {
     private readonly List<(string Text, string Label, double Delta)> _pushed = [];
 
+    /// <summary>
+    /// Подставка порта ML-клиента (создаётся в конструкторе).
+    /// </summary>
+    public IMlClient Client { get; }
+
     /// <summary>
     /// Ответ StatusAsync
     /// </summary>
@@ -26,37 +33,30 @@ public sealed class FakeMlClient : IMlClient
     public int PredictCalls { get; private set; }
 
     /// <summary>
-    /// Обучающие сигналы, отправленные через <see cref="PushAsync"/>
+    /// Обучающие сигналы, отправленные через <see cref="IMlClient.PushAsync"/>
     /// </summary>
     public IReadOnlyList<(string Text, string Label, double Delta)> Pushed => _pushed.ToList();
 
-    /// <inheritdoc />
-    public Task<MlStatusResponseDto> StatusAsync(CancellationToken ct) => Task.FromResult(Status);
-
-    /// <inheritdoc />
-    public Task PushAsync(
-        string text,
-        string label,
-        double delta,
-        CancellationToken ct)
+    /// <summary>
+    /// Создаёт подставку с поведением по умолчанию.
+    /// </summary>
+    public TestMlClient()
     {
-        _pushed.Add((text, label, delta));
-        return Task.CompletedTask;
+        Client = Substitute.For<IMlClient>();
+        Client.StatusAsync(Arg.Any<CancellationToken>())
+            .Returns(ci => Status);
+        Client.When(c => c.PushAsync(Arg.Any<string>(), Arg.Any<string>(), Arg.Any<double>(), Arg.Any<CancellationToken>()))
+            .Do(ci => _pushed.Add((ci.ArgAt<string>(0), ci.ArgAt<string>(1), ci.ArgAt<double>(2))));
+        Client.PredictAsync(Arg.Any<string>(), Arg.Any<CancellationToken>())
+            .Returns<MlPredictResultDto>(ci =>
+            {
+                PredictCalls++;
+                return Predict ?? throw new NotSupportedException();
+            });
+        Client.ResetAsync(Arg.Any<CancellationToken>())
+            .Returns<MlResetResultDto>(_ => throw new NotSupportedException());
     }
 
-    /// <inheritdoc />
-    public Task<MlPredictResultDto> PredictAsync(string text, CancellationToken ct)
-    {
-        PredictCalls++;
-        return Predict is null
-            ? throw new NotSupportedException()
-            : Task.FromResult(Predict);
-    }
-
-    /// <inheritdoc />
-    public Task<MlResetResultDto> ResetAsync(CancellationToken ct) =>
-        throw new NotSupportedException();
-
     // Статус по умолчанию: модель не готова, все счётчики 0 (форма MlStatusResponseDto).
     // Возвращает: Пустой статус (ml/ai/learning = 0), как у LocalMlClient до действий.
     private static MlStatusResponseDto DefaultStatus()