Add a "System config" card to the backup dashboard with two actions wired through
the task processor (same path as "Backup all apps"):
- "Back up now" -> libreportal backup system
- "Restore…" -> libreportal restore system (confirm dialog explains it lands
in a staging folder and never overwrites live config)
Card copy explains why it matters (the backup-location creds otherwise live only on
the box). Click handlers + runBackupSystem/confirmRestoreSystem added; JS parses,
data-actions match handlers, commands match the CLI subcommands.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
c2c10103b8