`hideLabel` was recomputed from the incoming slug on every load, and a live `code` reload carries no query at all — so a piece that arrived with `?nolabel` grew its corner label back the moment it was edited. Which is the one moment a preview card is actually being watched: the label was absent on arrival and present on every save after. Suppression belongs to the view, not to the piece. Boot already treats it that way, preserving `nolabel` across navigations, and a disk worker serves exactly one view for its whole life — so the flag latches there. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>