quak backup now writes account.json with the account's email and user ID,
adds each album's ownerID, isShared, updationTime and, when present, its
magicMetadata, pubMagicMetadata and sharedMagicMetadata to the album's
JSON, and adds updationTime to each file's JSON. The fields and their order
match backup-metadata's account.json, _collection.json and per-file JSON.
The interface runBackup drives gains whoami, which the library passes
through from its client.
Model: opus-5-5
clawbot