- Tab key toggles overview mode; camera smoothly lerps to overhead
position (0, 200, 0.1) and back, using a 0.04 lerp factor per frame
- Star/constellation rotation is suppressed during overview so the map
stays readable; rotation scales back in as the camera returns
- Displays a "MAP VIEW / [Tab] to exit" indicator with a pulsing border
while overview is active
- camera.lookAt(0,0,0) kept constant so the transition is seamless
Fixes#140
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>