main moved brush_sections.rs to panels/ with its tests in
panels/brush_sections/tests.rs, and gave the Angle and Roundness fields
accessible names. Keep the PR's left column and right-hand widget with
main's accessible names, move the PR's three layout tests and
section_harness_width into the new tests file, and find the captions with
main's caption_rect (get_by_label now also matches the named fields).
Docs: both sides' status entries kept.
Co-Authored-By: augrclk <217665348+augrclk@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
a3712435c3