Update requirements.txt

requirements.txt

@@ -6,6 +6,7 @@ openai==1.104.2
 nbformat==5.7.0
 nbconvert==7.5.0
 ipython==8.12.0
+ipykernel==6.25.0  
 
 # Data / file formats
 pandas==2.1.1
@@ -19,6 +20,13 @@ PyPDF2==3.0.0
 python-dotenv==1.0.1
 requests>=2.32.5,<3.0
 tqdm==4.65.0
+loguru==0.7.0 
+
+# Optional helpers (handy during development)
+black==23.9.1
+ruff==0.12.0
+pre-commit==3.4.0
+python-multipart==0.0.6
 
 # ML / vector / transformers (heavy — install only on suitable hosts)
 # Install these only on worker/dev machines where building wheels is OK