added required code

backend/app/services/gemeni_classification.py

@@ -1,4 +1,4 @@
-from backend.config.settings import Settings
+from config.settings import Settings
 import google.generativeai as genai
 import json
 import email

backend/requirements.txt

@@ -14,3 +14,4 @@ pypdf==5.4.0
 langchain==0.3.21
 python-dotenv
 PyPDF2
+google.generativeai