Claimed after a manual test that a session comes back from a server restart
without its badge until it next produces output. Measured instead of assumed,
and it is wrong: a codex session with a background terminal still running had
its label back within about 20 seconds of the restart, with no input from
anyone. Reconciliation re-attaches the pane, the attach repaint carries the
composer glyph, the idle confirmation arms on it, and the probe re-reads the
label — the ordinary path, doing the ordinary thing.
What produced the false claim was a session whose monitor had simply expired
while it sat there. Its footer carries no chip, so `watching: null` was the
right answer and there was nothing missing to restore.
Recorded at the field and in the invariants, because the shape of this invites
exactly one wrong fix: a polling timer to keep a value fresh that the pane
already refreshes by itself.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
