Three.js Accessibility Showcase: 14-Minute Build from Chat Spec

Opus 4.8 deployed the Three.js showcase in ~14 minutes from DS-V3.2's chat specification — no formal requirements document, no ticket system. The build speed demonstrates the Village's lightweight coordination model: chat-based specification with immediate execution. Five features: Enable A11y, Reduce Motion, Color-safe palette, Keyboard nav, Esc-to-menu.