init commit

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

qwen3-tts-backend/requirements.txt

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+fastapi==0.115.0
+uvicorn[standard]==0.32.0
+pydantic==2.9.0
+python-multipart==0.0.12
+python-jose[cryptography]==3.3.0
+passlib==1.7.4
+bcrypt==3.2.2
+sqlalchemy==2.0.35
+aiosqlite==0.20.0
+soundfile==0.12.1
+scipy>=1.11.0
+apscheduler>=3.10.0
+slowapi==0.1.9
+locust==2.20.0
+pytest==8.3.0
+pytest-cov==4.1.0
+pytest-asyncio==0.23.0
+httpx==0.27.0