Document deploying the FastAPI service to a Linux server end to end: venv +
CPU-only torch (avoid the CUDA build), opencv-python-headless, the two weight
layouts (HF cache offline vs local models/ folders) with the mirror/proxy/Xet
download workaround, environment variables, uvicorn --workers 1, a systemd unit,
verification, remote exposure, capacity notes, and a troubleshooting table.
Link to it from README.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
