Savegames now lists independent save slots made with the loaded ROM: new game, continue, rename, duplicate, export and delete. The native database moves to IndexedDB version 2; the singleton save becomes "Save 1" inside the upgrade transaction, so it migrates exactly once and the old store is left untouched. Each write adds a generation and drops older ones in one transaction, keeping two records with CRC-32 checksums: a damaged newest record falls back to the previous one. Slots and records from a newer player are kept and never written. Imports are checked in a scratch world before anything changes and previewed with the trainer, progress, saved time, game data version and the slots of the same trainer; they go into a new save or replace one, whose previous record stays recoverable. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>