The per-app Backups tab was the odd one out: snapshots and the
"Backup now" / "Open backup center" buttons all sat inside a single
flat .backup-app-card with no styling parity to Services or Tasks.
The Services tab uses .services-title (20px header + bottom border)
on top of a recessed .services-rows panel; Tasks uses the same recipe
with .tasks-title + .tasks-container. Backups now matches.
.backup-title is the header row — h3 + subtitle on the left,
Backup-now (primary) and Open-backup-center (secondary) buttons
pinned to the right so they stay reachable regardless of how long
the snapshot list grows. No pagination needed: the renderer already
soft-caps the displayed list at 50 with an "Open backup center"
overflow link, and per-app snapshot counts almost never exceed that.
.backup-snapshots-container is the dark panel (rgba bg 0.2, radius 8,
padding/margin 16) wrapping the existing status line + snapshot rows.
JS untouched — it still writes to #backup-app-card-status and
#backup-app-card-snapshots; only the outer shell changed.
Signed-off-by: librelad <librelad@digitalangels.vip>
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