Update requirements.txt to include essential LangChain packages

requirements.txt

@@ -1,121 +1,6 @@
-aiofiles==24.1.0
-aiohappyeyeballs==2.6.1
-aiohttp==3.11.18
-aiosignal==1.3.2
-annotated-types==0.7.0
-anyio==4.9.0
-asttokens==3.0.0
-attrs==25.3.0
-cachetools==5.5.2
-certifi==2025.4.26
-charset-normalizer==3.4.2
-click==8.1.8
-comm==0.2.2
-dataclasses-json==0.6.7
-debugpy==1.8.14
-decorator==5.2.1
-executing==2.2.0
-fastapi==0.115.12
-ffmpy==0.5.0
-filelock==3.18.0
-filetype==1.2.0
-frozenlist==1.6.0
-fsspec==2025.3.2
-google-ai-generativelanguage==0.6.18
-google-api-core==2.24.2
-google-auth==2.40.1
-googleapis-common-protos==1.70.0
-gradio==5.29.0
-gradio_client==1.10.0
-greenlet==3.2.1
-groovy==0.1.2
-grpcio==1.72.0rc1
-grpcio-status==1.72.0rc1
-h11==0.16.0
-hf-xet==1.1.0
-httpcore==1.0.9
-httpx==0.28.1
-httpx-sse==0.4.0
-huggingface-hub==0.31.1
-idna==3.10
-jedi==0.19.2
-Jinja2==3.1.6
-jsonpatch==1.33
-jsonpointer==3.0.0
-langchain==0.3.25
-langchain-community==0.3.23
-langchain-core==0.3.59
-langchain-google-genai==2.1.4
-langchain-text-splitters==0.3.8
-langgraph==0.4.3
-langgraph-checkpoint==2.0.25
-langgraph-prebuilt==0.1.8
-langgraph-sdk==0.1.66
-langsmith==0.3.42
-markdown-it-py==3.0.0
-MarkupSafe==3.0.2
-marshmallow==3.26.1
-matplotlib-inline==0.1.7
-mdurl==0.1.2
-multidict==6.4.3
-mypy_extensions==1.1.0
-nest-asyncio==1.6.0
-numpy==2.2.5
-orjson==3.10.18
-ormsgpack==1.9.1
-packaging==24.2
-pandas==2.2.3
-parso==0.8.4
-pexpect==4.9.0
-pillow==11.2.1
-platformdirs==4.3.8
-prompt_toolkit==3.0.51
-propcache==0.3.1
-proto-plus==1.26.1
-protobuf==6.30.2
-psutil==7.0.0
-ptyprocess==0.7.0
-pure_eval==0.2.3
-pyasn1==0.6.1
-pyasn1_modules==0.4.2
-pydantic==2.11.4
-pydantic-settings==2.9.1
-pydantic_core==2.33.2
-pydub==0.25.1
-Pygments==2.19.1
-python-dateutil==2.9.0.post0
-python-dotenv==1.1.0
-python-multipart==0.0.20
-pytz==2025.2
-PyYAML==6.0.2
-pyzmq==26.4.0
-requests==2.32.3
-requests-toolbelt==1.0.0
-rich==14.0.0
-rsa==4.9.1
-ruff==0.11.8
-safehttpx==0.1.6
-semantic-version==2.10.0
-shellingham==1.5.4
-six==1.17.0
-sniffio==1.3.1
-SQLAlchemy==2.0.40
-stack-data==0.6.3
-starlette==0.46.2
-tenacity==9.1.2
-tomlkit==0.13.2
-tornado==6.4.2
-tqdm==4.67.1
-traitlets==5.14.3
-typer==0.15.3
-typing-inspect==0.9.0
-typing-inspection==0.4.0
-typing_extensions==4.13.2
-tzdata==2025.2
-urllib3==2.4.0
-uvicorn==0.34.2
-wcwidth==0.2.13
-websockets==15.0.1
-xxhash==3.5.0
-yarl==1.20.0
-zstandard==0.23.0
+huggingface_hub
+langchain-text-splitters 
+langchain-community 
+langgraph
+langchain-google-genai
+langchain[google-genai]