gui: let task chips bring back a quiet row's activity line

is_visible() also checks ancestors, so once the line was hidden its own chips could never reveal it; read the chip box's own flag.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
14e4801669Lucenx9 committed on 10/10/2026, 1:58:41 PMparent89724c3
1 file changedLine totals unavailable