backend/requirements.txt

# Web Framework
fastapi==0.109.0
uvicorn[standard]==0.27.0
sse-starlette==1.8.2

# Database
motor==3.3.2
pymongo==4.6.1

# Data Validation
pydantic==2.5.3
pydantic-settings==2.1.0

# HTTP Client
httpx==0.26.0

# AI/ML - Local Inference (ONNX Runtime only, no PyTorch needed at runtime)
numpy<2.0.0
transformers==4.37.2
optimum[onnxruntime]==1.16.2
huggingface-hub==0.20.3

# Rate Limiting
slowapi==0.1.9

# Utilities
python-dotenv==1.0.0
jieba==0.42.1

# Keyword Expansion (FastText)
gensim==4.3.3

# Code Quality
ruff==0.1.14
mypy==1.8.0

# Testing
pytest==7.4.4
pytest-asyncio==0.23.3
pytest-cov==4.1.0
anyio==4.12.1
zhconv==1.4.3