Privacy: replace the runtime google_fonts fetch with a locally bundled
EB Garamond (variable TTFs + OFL license), so the app no longer contacts
Google's servers. Removes the google_fonts dependency.
PDF export:
- Add a normal/compressed image-quality choice in the export dialog.
Compressed re-encodes slides as JPEG (q60) at 1280px for a small handout,
saved as a separate "-compact" file.
- Add a configurable export directory (Settings → Exportmap); when unset,
exports land next to the deck as before.
- Prefix every export with a UTC timestamp (YYYYMMDDHHMMSS) so exports sort
chronologically and never overwrite each other.
Tests: export service (compression, output dir, timestamp) and an export
dialog widget test asserting the quality choice renders.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
