feat: 初始提交

backend/requirements.txt

@@ -0,0 +1,20 @@
+fastapi==0.110.0
+uvicorn[standard]==0.29.0
+sqlalchemy==2.0.29
+asyncmy==0.2.9
+aiosqlite==0.21.0
+alembic==1.13.1
+passlib[bcrypt]==1.7.4
+bcrypt>=3.2.0,<4.0.0
+python-jose==3.3.0
+python-dotenv==1.0.1
+pydantic==2.12.2
+pydantic-settings==2.11.0
+python-multipart==0.0.9
+openai==2.3.0
+httpx==0.28.1
+email-validator==2.1.1
+cryptography>=41.0.0
+libsql-client==0.3.1
+ollama==0.6.0
+langchain-text-splitters==0.3.11