Build-time data fetching

Fetching or computing dynamic data (telemetry, weather, sun position, coverage) at build time and baking it into static pages so the deployed site serves precomputed content with no runtime fetch.

grounded in: Real scripts gen_wttr.py, gen_sun.py, gen_coverage.py and the 15-min spark telemetry refreshes are computed then baked into ssg.py output committed to the repo

Connected concepts

Static site generation, Single source of truth, Local-first inference, Network-adaptive rendering