fix: clean up rate limit handler — alias slowapi import, rename wrapper to handle_rate_limit

app/api/main.py

@@ -1,7 +1,7 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from app.api.routes import router
-from slowapi import _rate_limit_exceeded_handler
+from slowapi import _rate_limit_exceeded_handler as _slowapi_handler
 from slowapi.errors import RateLimitExceeded
 from app.api.limiter import limiter
 import os
@@ -9,9 +9,11 @@ from prometheus_fastapi_instrumentator import Instrumentator
 from starlette.requests import Request
 from starlette.responses import Response
 
-async def _rate_limit_exceeded_handler(request: Request, exc: Exception) -> Response:
+
+async def handle_rate_limit(request: Request, exc: Exception) -> Response:
     return await _slowapi_handler(request, exc)  # type: ignore[arg-type]
 
+
 app = FastAPI(
     title="AI Code Review Agent",
     description="Multi-agent AI platform that simulates a software engineering team",