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backend/requirements.txt

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+# FastAPI Backend for Flexible Test Platform
+fastapi==0.115.0
+uvicorn[standard]==0.30.0
+sqlalchemy[asyncio]==2.0.31
+asyncpg==0.29.0
+pydantic==2.8.2
+pydantic-settings==2.4.0
+python-dotenv==1.0.1
+httpx==0.27.0
+PyYAML==6.0.1
+# Qwen/Tongyi API
+dashscope==1.20.0
+# For local model support
+openai==1.35.0
+aiohttp==3.9.5
+requests==2.32.3
+python-multipart==0.0.9
+langchain_community
+langchain_openai
+langchain_huggingface
+sentence_transformers