The library file-storage helpers joined FILES_STORAGE_PATH with a database stored_name and never checked containment, so a crafted name could read or delete files outside the storage root after a malicious 1.x SQLite import (which copies stored_name verbatim). Add assertSafeStoredName() and apply it in every helper that resolves a stored name to a path, matching the containment guard object-storage already uses.
Reported by Alpesh Bhagwatkar.