fix(predict): import SUPABASE_URL in app/api/predict.py to resolve NameError during supabase logs persistence

app/api/predict.py

@@ -7,7 +7,7 @@ from fastapi import APIRouter, File, Form, Header, HTTPException, UploadFile
 import requests
 
 from app.core.config import (
-    SUPABASE_SERVICE_ROLE_KEY, SUPABASE_TIMEOUT_SECONDS,
+    SUPABASE_URL, SUPABASE_SERVICE_ROLE_KEY, SUPABASE_TIMEOUT_SECONDS,
     SUPABASE_RAW_BUCKET, SUPABASE_PROCESSED_BUCKET,
     MODEL_SERVICE_HEADER_NAME, supabase_configured, LOGGER,
 )