fixed import issues

app/deps.py

@@ -4,10 +4,9 @@ from typing import Optional, TYPE_CHECKING
 import pathlib
 import logging
 import time
-from datetime import datetime 
 # ── Third-Party ────────────────────────────────────────────────────────────────
 import duckdb
-from fastapi import HTTPException, Header, Request, Depends, Query
+from fastapi import HTTPException, Header, Query
 from upstash_redis import Redis
 from collections import defaultdict
 

app/routers/ai_query.py

@@ -1,6 +1,5 @@
 # app/routers/ai_query.py
 from fastapi import APIRouter, Depends, HTTPException, Query
-from typing import Dict, Any
 from app.service.vector_service import VectorService
 from app.service.llm_service import LocalLLMService # Your existing LLM file
 from app.deps import verify_api_key