Added
- Add Google Drive as an explicitly selected storage destination for new Documents files and Calendar attachments, with least-privilege OAuth connection, testing, account safeguards, and provider status. Existing files stay on their recorded backend, and SQLite backups contain Drive metadata and file IDs rather than Drive-hosted binaries.
Fixed
- Keep Calendar attachment access aligned with event visibility and assignees, including existing linked attachments, so private or restricted files cannot become household-visible through Documents.