Alinea la funcion al contrato de control de cola (punto 3 del roadmap ComfyUI):
- firma keyword-only: clear_pending (vacia pendientes con POST /queue {clear:true}) + timeout
- output {ok, interrupted, cleared, queue_remaining, error}; GET /queue al final
- no lanza en fallo de red: degrada a {ok:False, error}
- test con mock HTTP local (golden + clear + cola vacia + error path), 4/4 verde
- .md autosuficiente con gotchas + capability growth log
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>