Order asked for a minimum of ten under happy-dom. happy-dom is not actually
installed (not in package.json, not in node_modules) and root config is not
mine to edit, so these run in the default node environment instead — which is
why the logic was factored into pure modules first.
Covers everything the order named except the two things that genuinely need a
DOM: chip rendering (the arithmetic is covered) and attach()'s window binding
(the routing is covered).
Pins the invariants worth pinning: no build page ever exceeds nine slots at
any catalog size, syncRoster copies values rather than holding sim buffers
across frames, footprint hit-testing respects rotation, and an unknown jam
reason or machine kind degrades instead of throwing.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
