fix: persist room operation cancellation across lost admission acknowledgments

control/chat_api.py

@@ -185,5 +185,14 @@ async def voice_cancel(room: str, rid: str, request: Request):
     return {'run': await request.app.state.chat_runs.cancel(account['id'], rid)}
 
 
+@router.post('/internal/chat/rooms/{room}/operations/{key}/cancel', dependencies=[Depends(internal_authorized)])
+async def voice_cancel_operation(room: str, key: str, request: Request):
+    account = await room_owner(request, room)
+    try:
+        return await request.app.state.chat_runs.cancel_operation(account['id'], account['conversation_id'], key)
+    except KeyError:
+        raise HTTPException(404, 'Chat resource not found') from None
+
+
 def create_chat_router():
     return router