The corpus workflow runs its fixture suite during pull requests. Its ambient pipeline kind caused the generic wiki-only fixture to exercise the deliberately full pull-request policy instead of the local classifier path. Pin each ordinary fixture to local while retaining explicit manual and pull-request cases. Defense: wiki/process/agent-scale.md section 2 requires a fast corpus CI contract with change-aware Rust verification while pull-request and manual runs remain full safety gates. This keeps that stated policy testable from inside the always-on corpus workflow.