An owned corpus of those deck kinds survives open, save and reopen. The
check found the handout master — printed header, footer, date and slide
number — was dropped on save, so import and export now keep that part.
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>