- vite.config: separate lucide-react icons + analytics into own chunks
- App.tsx: defer SiteAssistant loading via requestIdleCallback
- HeroUploadZone: lazy-load ToolSelectorModal + dynamic import fileRouting
- HeroUploadZone: add aria-label on dropzone input (accessibility)
- SocialProofStrip: defer API call until component is in viewport
- index.html: remove dev-only modulepreload hint
Main bundle: 266KB -> 61KB (-77%)