- Weld steps never drag UVs across a hull UV0 seam: seam crossings and seam vertices are protected like corners,
flips stay inside one source UV island.
- Short seam merge and slide are judged by their end state (local worst angle), per target r4's wording.
- Stand-in UV0 on the hand cage (export_uv.py, hull_uv.obj); bevel strip UVs measured on loop strips only.
- Note: round-4 section with the flat-split before/after pair first, tables per call, open questions.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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