Renames the image output directory from build-output/ to iso-out/ (config
default, .gitignore, docs).
Also documents the asymmetry that showed up when building a household with
several endpoints: kiosks and amd64 audio endpoints get one image per array
entry, because their hostname is baked in at build time; the arm64 audio image
is generic and built once no matter how many arm64 rooms are listed, because Pi
Imager sets hostname and Wi-Fi per unit at flash time. That is project-plan
Phase 15.5's existing decision, now reflected in what build-all actually does
rather than only in prose.
Verified with a stubbed full run of a six-endpoint household: one build-all
invocation produced nine distinctly-named images with no overwrites.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Amir Alexander Abdelbaki
919ce94d52