v0.3.0

Changelog

• fa57099 Add barcode printing (1D + 2D) with wide and HRI options
• 4f84f96 Add built-in sample print jobs to the Try it UI
• 541d9cf Add document endpoint: server-side receipt layout in one job
• 55ffbaf Add optional per-line text formatting
• 9efcbcb Embed Roboto + Gelasio fonts as SVG fallbacks, log font misses
• 036ff6c Embed literal git tag as version so web UI matches the release tag
• 1798ffb Harden SVG endpoint: recover render panics, bundle deterministic fonts
• dc11f03 Merge branch 'main' into claude/practical-sutherland-af667d
• 4e1a433 feat: print SVG
• 145f6de layout test file
• affd803 updated readme