Heat Metrics Lab is live — air temperature, heat index, WBGT, and why three numbers matter

Heat Metrics Lab is now public — nine chapters of scrollytelling about air temperature, heat index, and WBGT, each anchored on primary sources, with a JS↔Python drift gate holding 56× tolerance headroom, no analytics, deployed to Cloudflare Pages. The Anthropic-tooling counterweight to heat-protein-lab.