Cleanup of the four cosmetic items flagged in the PR-AB.b layout audit:
- Settings tab: the "Host-Side Signal Processing" group note used DARK_WARNING
(orange) but is purely explanatory, not a caution — converted to italic
DARK_INFO (blue) so it matches the equally-informational Bench-mode note
in the next group.
- AGC group ALWAYS-ON badge: added margin-bottom so it reads as a header
rather than sitting flush against the first AGC Target row.
- Detected Targets table: "Velocity (m/s)" header was clipping its leading
V against the column divider under Stretch resize mode (column width
~92 px, header text ~140 px). Header text shortened to "Vel (m/s)" so
it sits comfortably alongside Range/Confidence/Magnitude/SNR/Track ID;
QHeaderView::section padding bumped 10→12 px for general daylight.
- AGC Monitor strip: Gain/Peak/Total Saturations labels now share a uniform
DARK_FG colour. Only the value text on the AGC mode label still carries
colour (green ALWAYS-ON / AUTO, blue MANUAL), so colour means state
rather than label-decoration.
Regression: GUI v7 150/150.