Hamza c1fd34f145 Fix text centering and add label length setting to web UI ...

- Use ctx.textAlign='center' instead of manual offset with Math.max clamp
- Add label length selector (30/40/50mm) to settings
- Compute canvas size from label length at 8 dots/mm (203 DPI)
- Preview updates when label length changes

Fixes #3

2026-02-24 22:04:50 +01:00

23 KiB

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