Add CRYSTAL_COUNT=5 floating octahedron crystals above the platform,
each colour-coded to an agent zone (Claude/Timmy/Kimi/Perplexity/center).
Crystals gently float and spin.
Add a pool of LIGHTNING_POOL_SIZE=6 additive-blended line arcs that
connect random crystal pairs. Arc count and opacity scale with the mean
zoneIntensity (0-1) from the commit heatmap — so more recent agent
commits → more arcs. Arcs re-jag every ~130 ms for a sparking effect.
Fixes#257
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>