The header popup marks each subagent with a rolling spinner while it
works and a green dot once it is done; the cards had no marker at all,
because their only candidate signal never existed. SessionSummary has
no completion field, so the row read was dead and always false — the
popup takes its answer from subagentTiming.lastTurnCompleted, and so
does a card now. A session that is not a subagent never carries that
projection, so its own folded steps against a stopped session stand in.
The glyph is the harness's own StateDot primitive at one fixed size, so
a card flipping between states never shifts its title.
bowenliang123
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