Member Library Platform 0.10.0

The catalogue import now runs in resumable steps from the Migration page with a live progress bar and a timestamped log: a rollback snapshot is saved before anything is written, then records, relationships, and the homepage/Access Groups finish in batches of 100 short requests, so production timeouts can no longer cut an import in half. Records whose fingerprint already matches production are skipped. A failed step shows its error and offers Resume, and the pre-import snapshot stays available to roll a partial import back exactly.