garrettmills e734ef650b Add deck rename and duplicate operations ...

New Catalog::rename_deck / duplicate_deck (duplicating format, commander,
notes, and every deck_cards row under a new name), with tests covering
the UNIQUE(name) collision cases the UI needs to surface as friendly
errors rather than raw SQL messages.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

2026-07-07 21:21:26 -05:00

..

mtgc-core

Add deck rename and duplicate operations

2026-07-07 21:21:26 -05:00