The repository had no entry point, and the cloud image pinning in particular
needed explaining: which distributions track "latest" upstream and which bake
an exact version into the filename is the thing that determines whether a pin
rots silently, and it was not evident from reading the script.
Documents the template builder and update-image-pins.sh in full, including the
two properties worth preserving in the updater, deriving URLs from the builder
rather than duplicating them and verifying qcow2 magic rather than a 200, since
both look like needless complexity to anyone simplifying it later.
Indexes the rest of the tooling one line each, and records the deployment step,
because /opt/ergosteur is not a checkout and nothing here is live until copied
across.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
