feat: balada mode — mirror ball, disco floor, spotlights, sun transition
- Mirror ball globe: canvas-based tile rendering with winner-takes-all
specular lighting + Lambert diffuse edges; 8 orthogonal lights orbit
slowly (~4 min/rev) ensuring no dark periods
- Disco floor tiles: per-frame alpha/color lerp (dt-based) decoupled from
the 400ms randomization gate — eliminates choppy low-FPS appearance;
smooth ~1.2s fade-in, ~2.4s color blending per tile
- Sun: organic JS-generated stripes (sqrt-spaced, perspective-correct),
opacity crossfade overlay for retrowave↔balada gradient transition,
slow position animation (rises to sky in balada mode)
- Spotlights, disco particles, ray rotation, beat pulse
- toggle-balada.sh / toggle-skeleton.sh: external IPC scripts via /tmp files
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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