agent-sdk-runner defaulted to Opus 4.7 while session-runner (the claude
-p path) defaulted to Sonnet — an inconsistency between the two runners,
not a decision anyone made. Unpinned tests were implicitly asserting the
expensive model. The 30+ tests that genuinely need Opus already pin it
via opts.model. Re-baselined by the periodic run in this branch's final
verification; regressors get explicit Opus pins.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>