Kyle Isom 5993d20995 Implement Phase 5: SVG, JPG, PDF rendering ...

- SVG: strokes → SVG path elements with dashed/arrow support,
  coordinates scaled from 300 DPI to 72 DPI
- JPG: rasterization at 300 DPI using Go image package, Bresenham
  line drawing with round pen circles
- PDF: minimal PDF generation with raw operators, no external library
- 6 tests: SVG output, dashed style, arrow heads, JPG magic bytes,
  PDF header, page size calculations

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

2026-03-24 19:54:32 -07:00

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