The scrollbar thumb centred a 4px bar in a 10px track behind a
transparent border, so it floated three pixels shy of the right edge.
The thumb is the track now — a thin 6px rounded bar sitting flush
against the divider line, where a scrollbar belongs.
The group heading is a heading now, not a project row: the smoke test
measured a group against the projects filed under it and read the
section icon as a dot. It measures a group against "Projekter" — the
tier it shares — and reads the icon both headings carry.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
