The header list watches its session's roster through ctx.jobs.watchRows
while mounted and reads rows and observed views from one jobs snapshot. A
row is expandable while the job is live or once it left retained output
behind; it shows the live progress line or the terminal detail. The web
e2e drivers kill through visibleTo(), and the client fixtures the roster
removal missed drop their jobs baselines.
A steer or follow-up accepted while a turn is closing is now claimed by a
fresh turn at the driver's clean exit instead of stranding in the inbox;
cancellation and pre-step rejection still park accepted work. Continuable
subagent follow-ups accept image parts: the wire is upload-shaped, the Host
admits and persists each batch before inbox acceptance, and delivery is
refused when the child model declines image input. The queue dock renders
durable image thumbnails instead of an [image] text marker.
Fixes#3186
Yichen Jiang