- Add multi-disk support (up to 4 independent disk layers) with per-disk
arms, twist, tilt, rotation, inner/outer radius
- Add polar beams (top/bottom) with taper, gravity, thickness controls
- Implement tab-based disk selector UI with add/remove disk
- Add Randomize Settings button for full param randomization
- Add Regenerate (reseed) and Center View buttons
- Add per-system contents generation (planets, belts, stations, anomalies,
gas clouds, stargates) with orbital mechanics
- Refactor control panel into scrollable sections with value display
francy51
80060be5ba