Toolbar redesigned: three-section layout (back+brand / centered search
with icon / tool buttons). Brand icon in accent purple. Zoom buttons in
compact pill group. Tool labels visible on desktop, icon-only on mobile.
Added keyboard shortcuts modal (keyboard icon button): lists all 10
shortcuts with styled kbd elements.
Fixes:
- Mouse wheel zoom min matched to button zoom min (0.02)
- Right-click no longer triggers left-click info modal (button filter)
- Removed external "Open on Spotify" link from context menu
- Search results dropdown centered under search bar
36e83e64ee
