Mirror the hide flow for watched: marking a video watched (card, modal toggle,
or auto-watch) raises a toast and a bell-history entry with an Unwatch action —
no Find-in-feed, just revert. NotifMeta becomes a discriminated union
(video-hidden | video-watched); unhide/unwatch share one revert-to-new helper.
- Add a theme-aware glass surface system (.glass/.glass-card + ambient backdrop,
performance-mode opt-out) and apply it across panels, popovers, toasts, cards,
sidebar widgets, channel rows, video cards and login.
- SettingsPanel: slide in/out animation, glass styling, wrapping pill tabs (no
horizontal scrollbar) with a prominent active state.
- Notifications: auto-dismiss can be switched off (stays until closed); the test
notification now also triggers the alert sound; resume a suspended AudioContext.
- Add an app-wide, toggleable hint/tooltip system (lib/hints + Tooltip) and wire
hints across the settings and channel-manager surfaces; persisted per account.
- NotificationCenter closes on outside click (document listener, not an overlay
that the blurred header trapped) and no longer needs a second bell click.
- Toasts show a level-colored countdown bar and auto-dismiss faster (6s default).
- Hidden-video notifications carry structured meta so the center offers an in-app
'Find in feed' (jump to that channel's hidden videos) and a one-click 'Unhide',
working even after a reload when the live Undo callback is gone.
- Replace the toast store with a notification store: levels (info/success/
warning/error/fatal), requiresInteraction, and a persisted history.
- Move toasts to the top-right, styled per level, with manual dismiss.
- Add a bell in the header opening a Notification Center (history, unread badge,
'needs attention' vs info, clear all).
- Capture network failures and 5xx responses (api layer) and render crashes
(ErrorBoundary) as notifications.
- Sound + server-sourced events + per-account settings remain for 6b.
