Cutting-planning, diagnostics and fill tests drew the same circles,
squares, clockwise rectangles, closed polygons, rounded rectangles and
right-midpoint rectangle contours in private helpers. They now use
TestHelpers; files whose helper had its own default size keep a
one-line wrapper for it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Nest windows now rerun the overlap check once the layout has been
unchanged for 0.5 s, instead of leaving 'Overlaps: not checked'. Edits
show 'Overlaps: check pending...'; drags are caught by the paint-time
pose stamp, collection edits by their events. The check waits while a
mouse button, modal dialog or fill is active, supersedes a running check
when the layout moves again, and does not retry a canceled or failed
layout until it changes. Rechecks use the incremental analyzer, so only
the moved parts' neighbors are recomputed.
Automatic results update only the canvas label (the status bar keeps the
last command's message) and keep Display > Off. Check Active Plate still
runs immediately. InvalidateOverlapCheck now also drops cached material.