Fixed
- Toast success/warning/danger now use dark text in dark mode — previously white text on vivid lime/amber/pink backgrounds had contrast ratios of ~1.3–1.5:1 (unreadable); now 13–15:1 (WCAG AAA)
- List stagger animation tapers naturally (35→30→25→22→18→15→12→9→7ms steps) and covers 9 items before capping, replacing the abrupt constant 175ms from item 6 onward