"Backup now" and "Open backup center" looked off compared to the rest of
the app page — the secondary link sat underlined with a trailing arrow
glyph instead of a real button, and neither carried an icon. Re-skins
both to use the .btn .btn-primary / .btn .btn-secondary pattern the
config Save / Reset buttons use, so the three action surfaces on an
app page read as one family.
Backup now .btn .btn-primary + upload-cloud SVG (16x16)
Open backup center .btn .btn-secondary + external-link SVG (16x16)
The "Open backup center" link is now SPA-routed (preventDefault + call
navigateToRoute) so clicking it doesn't trigger a full page reload —
same behaviour as the deep-link cells in the global Snapshots table.
href is still /backup so cmd/ctrl-click and right-click → open-in-new-tab
still work the natural way.
Applied to both apps-unified-layout.html and the legacy app-content.html
since the existing app-page surface lives in both templates.
Signed-off-by: librelad <librelad@digitalangels.vip>
713cba76f0