Conciseness

The body is dense and method-specific with almost no explanation of concepts Claude already knows, but the 'Connection to TESTS.md' section and the trusted-host/authorization prose in the Audit Flow could be trimmed, matching anchor 4 (efficient, minor over-explanation) rather than the fully lean anchor 5.

Actionability

Provides a copy-paste ledger template with a real example command ('pytest tests/test_03.py && python scripts/reconcile.py --module 03') and exact git commands in step 1, but dependency-extraction guidance remains generic ('this skill does not pretend a universal scanner can parse every language' with no example scan), so minor gaps keep it at anchor 4.

Workflow Clarity

The six-step Audit Flow has an explicit sequence, validation checkpoints (review before execution, gate on exit codes), a feedback loop ('fix or confirm it and rerun from step 3'), failure-attribution guidance, and a Four Invariants checklist — a clear match for anchor 5.

Progressive Disclosure

No bundle files exist and none are referenced; the single ~90-line file is well sectioned with the template, invariants, and boundary table appropriately inlined. This matches anchor 4 (good structure, minor organization gaps) rather than 5, since the content is monolithic and exceeds the simple-skill threshold.

Specificity

Lists several concrete actions ('records each module's downstream consumers and executable acceptance command', 'run the changed module and every affected downstream command', 'use observed exit codes as regression evidence'), but coverage has minor gaps — ledger creation, propagation rules, and audit reporting are not mentioned, so it matches anchor 4 rather than the comprehensive anchor 5.

Completeness

Explicitly answers both what (govern cross-module regression with a REGRESSION.md ledger, run downstream commands, use exit codes as evidence) and when ('Use for module regression, regression ledgers, impact audits, downstream verification, and changes where modifying A may break B'), matching the anchor 5 example structure with concrete trigger phrases.

Trigger Term Quality

The 'Use for' clause provides good natural keywords ('module regression, regression ledgers, impact audits, downstream verification, and changes where modifying A may break B'), but common variations such as 'regression testing' or 'dependent modules' are missing, placing it at anchor 4 rather than comprehensive anchor 5.

Distinctiveness Conflict Risk

Distinctive artifacts and terms ('REGRESSION.md ledger', 'downstream consumers', 'executable acceptance command') carve a clear niche, but 'impact audits' and generic 'module regression' overlap with closely related change-impact and regression-testing skills, so it is mostly distinct with minor overlap risk (anchor 4).