The body is lean and assumes Claude's competence, deferring build/docker prerequisites to the README rather than restating them, with no padding or concept explanation, matching the level-3 anchor for lean, token-efficient content where every token earns its place.

It gives concrete file locations (src/cli.rs, src/scenarios/gate.rs, src/state.rs), named symbols (GateArgs, ChaosEvent), and executable commands (cargo build -p personhog-..., personhog-test-harness gate ...), meeting the level-3 anchor for fully executable, copy-paste-ready guidance.

The six-step 'Adding a chaos scenario' sequence is clearly ordered with an explicit validation checkpoint ('Rehearse locally until deterministic — three consecutive green runs is the bar') and a feedback loop (make it deterministic if it's a lottery), matching the level-3 anchor for a clear sequence with explicit validation and error-recovery loops.

The skill is a single self-contained file with no bundle directories (references/scripts/assets absent); content is well-organized into clearly labeled sections and defers only build/usage detail to the README one level deep, which is appropriate structure for a skill of this size per the rubric's simple-skill note.

Lists multiple concrete actions ('add scenarios, chaos events, and invariants') and names specific components (leader, router, writer, replica, coordination protocol) and failure modes (crashes, drains, zombies, lag, failover), matching the level-3 anchor for multiple specific concrete actions.

It explicitly answers both what ('When and how to add scenarios, chaos events, and invariants to the personhog e2e test harness') and when ('Use after fixing a bug or regression... so the fix gets a permanent regression scenario'), satisfying the level-3 anchor that requires explicit what AND when triggers.

An explicit 'Trigger terms:' line provides good coverage of natural phrases a user would say ('chaos scenario', 'test harness', 'eviction', 'writer lag', 'acked write', 'handoff bug'), meeting the level-3 anchor for good coverage of natural terms.

The personhog test-harness niche is highly specific with distinct, domain-bound triggers, making it unlikely to fire for unrelated skills, matching the level-3 anchor for a clear niche with distinct triggers.