- DB: 7 new user prefs (sound per slot, per-type toggles, vibration, mute, volume).
- API: PATCH /auth/me/notification-preferences with whitelisted partial update,
integer guard for volume, and hydrated AuthUser response. AuthUser now exposes
the 7 new fields.
- Frontend: Web Audio synth library (8 sounds), settings popover with global
mute/vibration/volume/per-type toggles, slot tabs, sound preview buttons,
shift+click on bell for quick mute. Concurrency-safe optimistic updates with
monotonic seq counter. RTL-correct toggle knob transforms.
- Socket hook plays sound on notification_created (orders/meetings only) when
tab is hidden, respecting global mute and per-type toggles.
- Audio unlock hook mounted globally to satisfy autoplay restrictions.
- AR/EN translations added.
Pre-existing TS errors in executive-meetings.ts (font_settings) and pre-existing
test failures in test workflow are unrelated to this task.
riyadhafraa
242f63ab26