Keep error pages full-viewport, lift the unsaved bar above the
mobile keyboard, make status/heading layouts stack cleanly on small
screens, route service DB backups to volume-backups, and tighten
volume backup grid/forms. Cover with feature tests.
- Gate volume backup retention and S3 controls by update permission
- Preserve backup records when S3 deletion fails
- Share SFTP download streaming with consistent missing-file handling
- Handle schedule creation errors and link service database backups
Add polymorphic volume backup scheduling for persistent volumes and directories, expose schedule management via API, and reorganize backup configuration and execution views.