Reconstructs queue context for a training job

A GPU capacity row as it stands now, with last_modified so callers can judge whether the value matches what the dequeue gate saw at submit time. Capacity rows are not historicized: edits overwrite in place. Compare last_modified against the response's submitted_at — if it's later, the value may have changed.

A GPU capacity row as it stands now, with last_modified so callers can judge whether the value matches what the dequeue gate saw at submit time. Capacity rows are not historicized: edits overwrite in place. Compare last_modified against the response's submitted_at — if it's later, the value may have changed.

Jobs in the same (org, gpu_type) pool that were holding capacity at submitted_at

PENDING jobs in the same (org, gpu_type) pool that were ahead of the target in dequeue FIFO order at submitted_at (priority DESC then created ASC). These also block the target's release.

Every status event in [submitted_at, events_window_end] for the target job, every job in active_at_submit, and every job in pending_ahead_at_submit, oldest first.