- Edited ROIs now override the file's for every subsequently loaded image
and survive settings changes, until a new file is opened (previously a
delete/add was lost on the next image). Tracked via an roi_override_ that
is re-applied to curr_experiment and to each loaded image's dataset.
- The ROI selector is a compact combobox instead of a list widget.
- "Show labels" and "Translucent fill" share one row to save space.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>