AJ Isaacs 722f758e94 feat: dual-tangent arc fitting and DXF version export ...

Add ArcFit.FitWithDualTangent to constrain replacement arcs to match
tangent directions at both endpoints, preventing kinks without
introducing gaps. Add DXF year selection to CAD converter export.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-30 09:16:09 -04:00

6.8 KiB

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