Upd history clearer

app.py

@@ -333,6 +333,14 @@ async def delete_chat_history(user_id: str, project_id: str):
     try:
         rag.db["chat_sessions"].delete_many({"user_id": user_id, "project_id": project_id})
         logger.info(f"[CHAT] Cleared history for user {user_id} project {project_id}")
+        # Also clear in-memory LRU for this user to avoid stale context
+        try:
+            from memo.memory import MemoryLRU
+            memory = app.state.__dict__.setdefault("memory_lru", MemoryLRU())
+            memory.clear(user_id)
+            logger.info(f"[CHAT] Cleared in-memory LRU for user {user_id}")
+        except Exception as me:
+            logger.warning(f"[CHAT] Failed to clear in-memory LRU for user {user_id}: {me}")
         return MessageResponse(message="Chat history cleared")
     except Exception as e:
         raise HTTPException(500, detail=f"Failed to clear chat history: {str(e)}")

memo/memory.py

@@ -30,3 +30,10 @@ class MemoryLRU:
 
     def all(self, user_id: str) -> List[str]:
         return list(self._store[user_id])
+
+    def clear(self, user_id: str) -> None:
+        """
+        Clear all cached summaries for the given user.
+        """
+        if user_id in self._store:
+            self._store[user_id].clear()