The setup-in-progress banner floats over arbitrary page content (the aurora
gradient, apps grid, task logs) but filled at rgba(--bg-rgb, 0.45) with no
backdrop blur, so the page bled through and it looked washed-out. Mirror the
.notification treatment already used for floating toasts: a near-solid panel
(0.85) over a frosted backdrop, plus a lift shadow. Stays theme-aware via
--bg-rgb (near-black on dark themes, near-white on light).
Signed-off-by: librelad <librelad@digitalangels.vip>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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