docs: enhanced docsite - contributing, sacred math, VIBEE theorems, green theme

- Contributing page rewritten with 12 sections: Golden Chain cycle,
  VIBEE spec format, PAS DAEMONS constants, tech tree, toxic verdict
- Sacred math enhanced: Trinity Identity proof, Sakra Formula,
  Phoenix Number, radix economy, golden ratio properties, phi-spiral
- Physical constants formulas: fine structure, proton-electron ratio,
  Koide formula, E8 dimension, with Zig verification code
- Mathematical proofs: 6 rigorous proofs with step-by-step derivations
- VIBEE theorems: all 33 theorems organized into 10 categories
- Green theme (#00FF88) CSS with theorem-card, green-card,
  formula-golden, metric-card, badge, animation classes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: gHashTag