fix(01-01): stop auto-registering unknown matrix rooms

- resolve known room chat ids from stored metadata only
- return an explicit unregistered fallback and warn in logs

adapter/matrix/room_router.py

@@ -1,23 +1,17 @@
 from __future__ import annotations
 
-from adapter.matrix.store import get_room_meta, next_chat_id, set_room_meta
+import structlog
+
+from adapter.matrix.store import get_room_meta
 from core.store import StateStore
 
+logger = structlog.get_logger(__name__)
+
 
 async def resolve_chat_id(store: StateStore, room_id: str, matrix_user_id: str) -> str:
     meta = await get_room_meta(store, room_id)
     if meta and meta.get("chat_id"):
         return meta["chat_id"]
 
-    chat_id = await next_chat_id(store, matrix_user_id)
-    await set_room_meta(
-        store,
-        room_id,
-        {
-            "room_type": "chat",
-            "chat_id": chat_id,
-            "display_name": f"Чат {chat_id}",
-            "matrix_user_id": matrix_user_id,
-        },
-    )
-    return chat_id
+    logger.warning("unregistered_room", room_id=room_id, user=matrix_user_id)
+    return f"unregistered:{room_id}"