Get job progress, exact credits, webhook delivery state, and video rows

A monitor-created job includes optional monitor_id identifying its account watch; ordinary API jobs omit it. Monitor-created jobs use account daily caps and remain account-owned after creator-key changes or OAuth disconnection. Ordinary API-key requests retain their per-key limits and may continue when monitor admission reaches its account cap. A job created with translate=true includes translate: true and translation_credits, the credits charged for its translated videos, beside credits; each of its video rows carries translation_credits. Other jobs omit those additions.