The management route-coverage guard fires because /team/metadata_schema landed
in #33353 without a behavior-suite scenario, so this adds one covering the nine
seeded actors plus the unauthenticated 401
The prometheus budget-metric assertions read the log call's first positional
arg, which #35703 turned into an unrendered "%s" format string when it moved
logging to lazy args. They now render the message from the call args, which
also pins the arg order and the exception text that the old substring check
never reached
GitHub Models was fully retired on 2026-07-30, so test_completion_github_api
can no longer pass: the endpoint the github provider targets returns 404 and
models.github.ai answers 410 "github_models_retirement_brownout". The dead live
test is removed rather than skipped
