Folder tree now indents 20px per level (chevron width + gap) so a child's
chevron column lines up under its parent's label, and depth-1 rows nest
under the section eyebrow instead of starting flush with it. Spacer for
leaf rows matches the chevron button footprint so rows align regardless
of expandability.
Sidebar open/close buttons (previously split between TopBar and each
panel header) collapse into two toggles at the ends of the FilterBar.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
dtoro
a6eb406052