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_store.py

@@ -3,11 +3,14 @@ from __future__ import annotations
 import pytest
 
 from adapter.matrix.store import (
+    clear_pending_confirm,
+    get_pending_confirm,
     get_room_meta,
     get_room_state,
     get_skills_message_id,
     get_user_meta,
     next_chat_id,
+    set_pending_confirm,
     set_room_meta,
     set_room_state,
     set_skills_message_id,
@@ -70,3 +73,14 @@ async def test_next_chat_id_increments(store: InMemoryStore):
 async def test_skills_message_roundtrip(store: InMemoryStore):
     await set_skills_message_id(store, "!room", "$event")
     assert await get_skills_message_id(store, "!room") == "$event"
+
+
+async def test_pending_confirm_roundtrip(store: InMemoryStore):
+    assert await get_pending_confirm(store, "!room:m.org") is None
+
+    meta = {"action_id": "test", "description": "Do thing"}
+    await set_pending_confirm(store, "!room:m.org", meta)
+    assert await get_pending_confirm(store, "!room:m.org") == meta
+
+    await clear_pending_confirm(store, "!room:m.org")
+    assert await get_pending_confirm(store, "!room:m.org") is None