Project the decrypted store into plain, key-free records the GUI reads
across Electron IPC: PhotoRecord, AlbumRecord, LibrarySnapshot, and the
LibraryChange a subscription delivers.
snapshot() is synchronous (RAM only): one PhotoRecord per fileID, deduped
across memberships with every album id, newest first. subscribe({ onChange })
fires a LibraryChange (changed full records plus removed id sets) only when a
refresh alters the projection; a no-op refresh fires nothing.
Magic-metadata field names are taken from the repo fixtures: w/h and
visibility. Edited-name/edited-time precedence is pubMagicMetadata over basic
metadata; takenAt is exposed in milliseconds (Ente stores microseconds).
Model: opus-4-8
sneak