feat(04-02): extend prototype and matrix pending state

- add saved session and last token tracking in prototype state
- add matrix load/reset pending store helpers

adapter/matrix/store.py

@@ -7,6 +7,8 @@ USER_META_PREFIX = "matrix_user:"
 ROOM_STATE_PREFIX = "matrix_state:"
 SKILLS_MSG_PREFIX = "matrix_skills_msg:"
 PENDING_CONFIRM_PREFIX = "matrix_pending_confirm:"
+LOAD_PENDING_PREFIX = "matrix_load_pending:"
+RESET_PENDING_PREFIX = "matrix_reset_pending:"
 
 
 async def get_room_meta(store: StateStore, room_id: str) -> dict | None:
@@ -74,3 +76,40 @@ async def clear_pending_confirm(
     store: StateStore, user_id: str, room_id: str | None = None
 ) -> None:
     await store.delete(_pending_confirm_key(user_id, room_id))
+
+
+def _load_pending_key(user_id: str, room_id: str) -> str:
+    return f"{LOAD_PENDING_PREFIX}{user_id}:{room_id}"
+
+
+async def get_load_pending(store: StateStore, user_id: str, room_id: str) -> dict | None:
+    return await store.get(_load_pending_key(user_id, room_id))
+
+
+async def set_load_pending(store: StateStore, user_id: str, room_id: str, data: dict) -> None:
+    await store.set(_load_pending_key(user_id, room_id), data)
+
+
+async def clear_load_pending(store: StateStore, user_id: str, room_id: str) -> None:
+    await store.delete(_load_pending_key(user_id, room_id))
+
+
+def _reset_pending_key(user_id: str, room_id: str) -> str:
+    return f"{RESET_PENDING_PREFIX}{user_id}:{room_id}"
+
+
+async def get_reset_pending(store: StateStore, user_id: str, room_id: str) -> dict | None:
+    return await store.get(_reset_pending_key(user_id, room_id))
+
+
+async def set_reset_pending(
+    store: StateStore,
+    user_id: str,
+    room_id: str,
+    data: dict,
+) -> None:
+    await store.set(_reset_pending_key(user_id, room_id), data)
+
+
+async def clear_reset_pending(store: StateStore, user_id: str, room_id: str) -> None:
+    await store.delete(_reset_pending_key(user_id, room_id))