app.js fetches /_data/api/commands.json and patterns.json, but those are
build artifacts written into site/public/_data/ by scripts/build.js. The
plain `astro dev` server never runs that build, so the homepage 404'd on
both in dev.
Extract generateApiData into scripts/lib/api-data.js (shared by the build
and a new scripts/gen-dev-api.mjs prebuild), and run the prebuild before
astro dev so `bun run dev` serves the same payloads as production.
site/public/_data/ stays gitignored.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
