The sample regression fixture now carries each part's pierce, lead-in and
cut moves from the Cincinnati machine program as its saved cutting program.
A new test posts those saved programs without reassigning lead-ins and
requires the program body to equal the sample exactly: L2/L4 macro, G41/G42
side, lead-ins and every cut move (21,911 lines).
Mutation checks: dropping the largest-contour perimeter rule from the kerf
fix fails it at the first perimeter (L4 posted as L2), and forcing G41 fails
it at the first perimeter's G42. The existing tests still replace the saved
programs with OpenNest's own lead-ins first; their comment now says so
instead of describing the sample's leads wrongly.
aj
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