The images are kept between runs (installed is about 35 GB), and a
scenario's disk only holds its changes, so the old "a VM disk grows to
about 50 GB and is deleted" was misleading. Mention smoketest clean.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Add sections on the coredesktop-dev sibling project and its commands,
an index of the four kinds of tests (lint, bats, smoketests, sibling
testing), the session-services safety rule, and how smoketests work.
List coredesktop-dev in the siblings data.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
davidandClaude Opus 5.5