tests/page-unit.js loads the built index.html script into the stub DOM page-smoke.js uses and
calls its helpers directly with node:test: escaping, times and sizes, file kinds, an untitled
item's name, the directory's sorts, filter words, DeadAir's playlist address. Top-level consts
are not properties of the vm context, so each check evaluates its expression in it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
