test(01-04): add matrix space regression coverage

- add MAT-01..MAT-07 and MAT-09..MAT-12 regression tests for matrix adapter
- extend store and dispatcher coverage for pending confirmations and settings dashboard
- verify matrix adapter suite and full pytest suite stay green

tests/adapter/matrix/test_confirm.py

@@ -0,0 +1,96 @@
+from __future__ import annotations
+
+from adapter.matrix.handlers.confirm import make_handle_cancel, make_handle_confirm
+from adapter.matrix.store import get_pending_confirm, set_pending_confirm
+from core.auth import AuthManager
+from core.chat import ChatManager
+from core.protocol import IncomingCallback, OutgoingMessage
+from core.settings import SettingsManager
+from core.store import InMemoryStore
+from sdk.mock import MockPlatformClient
+
+
+async def test_mat09_yes_reads_pending_confirm():
+    store = InMemoryStore()
+    platform = MockPlatformClient()
+    chat_mgr = ChatManager(platform, store)
+    auth_mgr = AuthManager(platform, store)
+    settings_mgr = SettingsManager(platform, store)
+
+    await set_pending_confirm(
+        store,
+        "C1",
+        {
+            "action_id": "delete_file",
+            "description": "Удалить файл config.yaml",
+            "payload": {},
+        },
+    )
+
+    handler = make_handle_confirm(store)
+    event = IncomingCallback(
+        user_id="@alice:example.org",
+        platform="matrix",
+        chat_id="C1",
+        action="confirm",
+        payload={"source": "command", "command": "yes"},
+    )
+    result = await handler(event, auth_mgr, platform, chat_mgr, settings_mgr)
+
+    assert len(result) == 1
+    assert isinstance(result[0], OutgoingMessage)
+    assert "Удалить файл config.yaml" in result[0].text
+    assert await get_pending_confirm(store, "C1") is None
+
+
+async def test_no_clears_pending_confirm():
+    store = InMemoryStore()
+    platform = MockPlatformClient()
+    chat_mgr = ChatManager(platform, store)
+    auth_mgr = AuthManager(platform, store)
+    settings_mgr = SettingsManager(platform, store)
+
+    await set_pending_confirm(
+        store,
+        "C1",
+        {
+            "action_id": "delete_file",
+            "description": "Удалить файл",
+            "payload": {},
+        },
+    )
+
+    handler = make_handle_cancel(store)
+    event = IncomingCallback(
+        user_id="@alice:example.org",
+        platform="matrix",
+        chat_id="C1",
+        action="cancel",
+        payload={"source": "command", "command": "no"},
+    )
+    result = await handler(event, auth_mgr, platform, chat_mgr, settings_mgr)
+
+    assert len(result) == 1
+    assert "отменено" in result[0].text.lower()
+    assert await get_pending_confirm(store, "C1") is None
+
+
+async def test_yes_without_pending_returns_no_pending():
+    store = InMemoryStore()
+    platform = MockPlatformClient()
+    chat_mgr = ChatManager(platform, store)
+    auth_mgr = AuthManager(platform, store)
+    settings_mgr = SettingsManager(platform, store)
+
+    handler = make_handle_confirm(store)
+    event = IncomingCallback(
+        user_id="@alice:example.org",
+        platform="matrix",
+        chat_id="C1",
+        action="confirm",
+        payload={},
+    )
+    result = await handler(event, auth_mgr, platform, chat_mgr, settings_mgr)
+
+    assert len(result) == 1
+    assert "Нет ожидающих" in result[0].text