Bookmarks are files. Not records.
Cove is an Obsidian plugin that treats each bookmark as a .md file with YAML frontmatter — nothing more. There is no .json cache, no proprietary database, no migration ever needed.
If you uninstall Cove tomorrow, every bookmark is still a plain markdown note in your vault — openable, searchable, and exportable like everything else Obsidian touches. The export is the storage.