epaint panics in set_fonts on a face skrifa can't open. Every system font
file is now checked with the same skrifa call (plus a readable cmap)
before it reaches FontDefinitions; a bad candidate is skipped with a
warning and the next one is tried, and a final pass drops any remaining
unparseable face from the definitions and every family.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, hardware, UI and localization parity docs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
