Prep Martha Jun Wk4 (QA + deploy)

## Must complete by Monday June 22 sync - [ ] Review Martha's full GreenScape build — check Biome output, content collections, responsive - [ ] Deploy GreenScape site to Cloudflare Pages - [ ] Compare build quality: GreenScape vs HVAC vs HVAC — note TypeScript/Biome impact - [ ] Prepare Saturday review agenda: demo site, explain content collections pattern, show Biome output