All three plugin engines turned a RotationPolicy into trial angles by hand
(fixed angle, stepped sweep, or right angles plus the minimum-bounding-
rectangle angle for Automatic), each with its own normalization, dedup and
sweep caps. EnumerateAngles gives one deterministic, Allows-checked list;
RotationCandidates.ForShape adds the MBR-aligning angles via the existing
Polygon.FindBestRotation, and DistinctOutlines drops angles where the part
looks identical. A cap of one returns the sweep start rather than throwing,
since engines request a single sample for small orientation budgets.
Co-Authored-By: Codex <noreply@openai.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
