Extension lines now walk in from the dimension line until they come 6px from
the drawing's outline, as on the CAD Converter, passing measured points that
are off the outline (a rounded rectangle's sharp corners). The flange bolt
circle is a leader landing on the dotted circle from outside, between holes,
instead of a linear dimension whose extension lines crossed the flange.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>