docs/spec/compat-tests.md lists each compat test, what it needs, what it
checks and what a failure means, and says plainly that they run against a
copy only, since the monitoring one purges the history it reads. The
scale-out and per-domain statuses record the acceptance tests that now
run.
per_domain_directory_compat, ignored, checks a copy of INBUXA's data has
no directory, no server default and no domain with its own directory, as
observed. The status names where the rules live, which suite covers each
acceptance test and how far, what was settled from the code, and the
known limits. SCIM's status notes its test 5 now passes.