Self-contained single-file HTML export for cards. Mobile-first,
dark theme, zero dependencies. Each card type gets its own
interactive treatment: snippet tap-to-copy, template slot filling,
checklist with progress bar, decision structured layout, link
tap targets. Filter chips by type, search across all cards.
Usage: nib export -f html -o deck.html
nib export -f html -t triage -o triage.html
- nib export: dump all entities to JSON (stdout or --output file)
- nib backup: atomic SQLite backup via VACUUM INTO (WAL-safe)
- Store.Backup() method on db layer
- Tests for both commands