* TRIM: a pick after a closed polyline's last cut keeps only the complementary run (#726)
With no cutting intersection past the pick, trim_polyline used the first cut
plus the perimeter as the end of the piece and then kept the run from the
first cut to the last cut plus a whole perimeter, so one extra circuit of the
outline stayed (a 4 x 4 square became an open polyline of length 24 instead of
8). The kept run now ends at the last cut before the pick.
* Docs: update the progress docs for this change
Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, geometry, hardware, UI and localization parity docs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
NetterSilver