Tasks Refined

Task creation and editing now use difficulty as the primary input, with XP derived automatically from the chosen difficulty level.

The My Tasks screen was refreshed with more minimal cards, cleaner All / Open / Done filters, and a more consistent visual language throughout.

The task inspect modal was rebuilt for performance — blur effects were removed and open/drag smoothness was significantly improved.

The app logo, launcher icon, and splash visuals were also refreshed with the new Aura branding.