Test-value evidence A passing test proves little unless it detects the relevant wrong behavior. Assess the changed contracts and their directly related tests, not the entire repository. Discover and follow the repository's instructions, pinned toolchain, test commands, assertion conventions, and execution permissions. This skill does not authorize edits in a read-only review, execution of untrusted code, workflow dispatch, publication, or access to another session's checkout. Inputs and boundaries Discover the requested diff/revision, production entry points, tests, fixtures, and available ex…