Conciseness

The body is almost entirely lean, instructional lines with no concept-explanation padding, but the sentence "Round 3 seeded a $9.90 button against a $99 requirement, and the frozen tester missed it" carries round-specific, time-sensitive history that could be trimmed to the durable rule. This matches anchor 4 (efficient with a minor instance that could be trimmed) rather than 5.

Actionability

Guidance is fully concrete and executable for an instruction-only skill: specific checks like "email in the test inbox, webhook received, file in storage, entitlement granted, charge in TEST mode for the right amount and currency", a defined evidence format ("step | action | screenshot | request | persisted proof | downstream proof | status"), and enumerated variants ("double submit, closing the tab mid-process"). Per the rubric's code-vs-instruction note, absence of code is not penalized when guidance is this actionable.

Workflow Clarity

The 7-step procedure is clearly sequenced with an explicit validation checkpoint ("After each state-changing step, verify the persisted state through an authorized read") and hard exit criteria ("PASS only when every step's end state is proven. Otherwise, record the exact failing step"). It matches anchor 5's explicit-validation-and-checklist pattern; there are no destructive or batch operations that would require a fix-retry loop.

Progressive Disclosure

The skill is under 50 lines with no external references needed, and content is organized into well-labeled sections (Procedure, Copy truth, Evidence, Exit criteria, Pitfalls). Per the rubric's guideline for short single-file skills, well-organized sections alone earn the top score; there are no buried or nested references.

Specificity

"Execute critical customer journeys end to end through the real UI, then verify persisted state, downstream effects, and continuity in a fresh session" names multiple specific concrete actions (execute journeys, verify persisted state, verify downstream effects, verify continuity) with comprehensive coverage of the skill's scope. It exceeds the 4 anchor because there are no meaningful gaps in the action list.

Completeness

Both halves are explicit and concrete: what it does ("Execute critical customer journeys end to end through the real UI, then verify persisted state, downstream effects, and continuity") and when to use it ("Use for signup, onboarding, core value creation, checkout, delivery, and any 'does it actually work' question"). This matches the anchor-5 good example's structure exactly.

Trigger Term Quality

The trigger clause offers good natural coverage — "signup", "onboarding", "checkout", "delivery", and the colloquial "does it actually work" — but misses common variants users would say such as "e2e", "end-to-end test", or "test the flow". This sits between anchor 4 (a few natural terms missing) and anchor 5 (comprehensive synonyms), closer to 4.

Distinctiveness Conflict Risk

The journey-verification niche ("through the real UI", "persisted state", "checkout, delivery") is mostly distinct from unit-test or API-test skills. However, the broad catch-all "any 'does it actually work' question" creates minor overlap risk with general testing/verification skills, fitting anchor 4 rather than 5.