P5-17: MessageQuickReactions moved from 3-dots menu to hover toolbar;
shows 5 recent emoji directly on hover. Clicking a quick-reaction also
closes any open emoji picker (setEmojiBoardAnchor). Line separator
removed from component.
P5-7: LotusToastContainer slides in from bottom-right when window is
focused — replaces OS notification for in-focus events. Correct room
path (DM vs home) derived from mDirectAtom. Invite toast routes to
inbox. 4s auto-dismiss. Full TDS styling via CSS custom properties.
P5-8: Confirmed already implemented upstream (MentionHighlightPulse,
0.6s scale+glow, one-shot, prefers-reduced-motion). Marked complete.
Code-review fixes: toast navigation used nonexistent /room/ route;
emoji picker stayed open after toolbar quick-reaction.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
