Replace hero raster with Astryx motion trace

[mattyu-dev]

What changed

• remove the unrelated industrial hero raster and old social-card asset
• install and use Astryx 0.1.6 with a compiled Launch Control theme
• add an interactive Detect → Route → Prove product trace using Astryx components
• add the exact Three.js r128 faceted mesh, anchored at x=4.5 desktop / x=0 mobile, with float and reduced-motion behavior
• replace the social image with a product-specific trace visual
• harden deterministic bundles, compositor detection, responsive/text-resize checks, and valid desktop/mobile Lighthouse profiles

Verification

• 64 Python tests, 84% coverage
• Ruff and scoped mypy pass
• Astryx doctor: 5 pass, 0 warnings
• npm audit: 0 vulnerabilities
• runtime QA v20: pass across 7 viewports
• Lighthouse performance / accessibility / best practices / SEO: 100 desktop and mobile
• LCP: 483ms desktop, 1.65s mobile; CLS 0; TBT 3ms / 0ms
• Route / Prove / reduced-motion compositor checks pass with no corrupt surfaces
• deterministic bundle rebuild verified