- generate_synthetic.py: Type 1/2 (one-line) and Type 3/4 (two-line) supported
- Hangul char map covers all 37 glyphs available in the asset bundle
- Two-line plates emit two separate PGNet polygons (top region+digits, bottom char+digits)
- REGION_MAP is a best-effort guess and flagged for visual verification
- Optional --dict flag prints coverage diagnostics
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>