Extend the migration module beyond Booklore and Grimmory so an existing Audiobookshelf or
Calibre-Web Automated library can be moved into BookOrbit without rebuilding user state by
hand. Audiobookshelf supports both a live API connection and an offline backup file, while
Calibre-Web Automated reads a stopped snapshot of the app and metadata databases.
Match source books by ASIN in addition to ISBN, and batch the ISBN, ASIN, file hash, file
path, and title/author lookups so planning a large library issues a bounded number of
queries rather than one per book. Route the batched author comparison through the shared
accent-insensitive predicate, which now accepts a SQL fragment so a per-row pattern column
is matched the same way a bound literal is.
Extract the shared source connection form into MigrationSourceFields so the modal and the
settings page stay in sync as source types are added, and allow a mapping to skip a source
user instead of forcing every account to be imported.
Closes#986