Vary caustic light shafts so they look less uniform

[Loyale]

Summary

• Replace the evenly-spaced god-ray set with a varied mix so the shafts no longer look like a uniform comb:
  • 7 sharp narrow beams at widths 1.0–2.4%, reaching 25–92% of the viewport, alpha 0.10–0.20, positioned irregularly (14, 19, 35, 58, 71, 83, 91 %). The 14/19 pair clusters together; there's a deliberate gap between 35 and 58.
  • 3 broader soft diffuse washes (widths 7–11%, alpha 0.05–0.07) at 8, 48, 76 % to fill the empty stretches without reading as beams.
  • The surface glow band is retained.
• Each ray uses a slightly different cyan/teal tint so they don't all read as the same light source.

Test plan

• Hard-refresh and confirm the shafts now look less regular — different beams reach different depths and the spacing feels organic
• Confirm no single ray dominates the layout; the brightest one (centerish, 58%) reaches the furthest but is still subtle
• Scroll the page and confirm the rays stay anchored to the viewport (fixed background still works)

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Generated by Claude Code