The test and test:verbose scripts ran jest with one worker per CPU core,
about 47 processes and 7-8 GiB per run on the shared 48-core build host.
They now pass --maxWorkers=3. On that host the suite takes 23-29s, inside
the unchanged 30-second cap in script/test but not by much: one test
file, tests/persistedFieldContract.test.js, takes most of it. One or two
workers went past the cap, so this departs from the issue's two-process
limit. make check, the pre-commit hook and script/cibuild all reach jest
through these scripts; the timings in the script/test and Dockerfile
comments are updated to match.
Model: opus-5-5
sneak