Follow-up to the image strip, addressing the review:
- Composition: stack the plots and the thumbnail strip vertically (plots on top
with more height, strip below) instead of sharing horizontal space — both
benefit from width, and the strip needs less height.
- Processing dock is hidden by default and narrower; it reveals itself only when
a reprocessing job starts (new jobStarted signal), and the Processing
perspective no longer force-shows it.
- Thumbnail spot overlays now use the same feature (indexed) / spot colours as
the main viewer, and follow the side-panel colour pickers.
- New strip selection modes "Resolution" and "Background": pick images that span
that metric's distribution (a quick histogram-representative selection).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>