Rootless Quadlet service 'frank-large' on dankclaw.

Ports:
- Engine: :8730 (loopback, unauth)
- Front-end: :8731
- Published: :7770

Constraints:
- Weights: Pinned (~68 GiB)
- Env Vars: Avoid TEMP, HOST, GPU_MAX_HEAP_SIZE (HIP runtime issue)

Logging:
- Use podman logs or journalctl.

Test Env:
- pyyaml missing, uv available, pip missing.
- Failures likely pre-existing.