Conciseness

Mostly dense project policy Claude could not know (test-data ownership, E2E scope gating, marker rules), but 'Locating Elements' and 'Assertions Reference' restate standard Playwright API Claude already knows — e.g. "page.getByRole('button', { name: 'Save' })" and "await expect(page.getByText('Saved')).toBeVisible()" — where the policy line ("never a plain boolean check, never waitForTimeout") would suffice. Fits 'efficient; minor instances of over-explanation that could be trimmed' better than the lean anchor-5.

Actionability

Fully executable throughout: exact install commands ("npm install -D @playwright/test", "npx playwright install chromium"), a complete copy-paste playwright.config.ts, exact run commands ("npx playwright test --grep \"@UC-010\""), file-naming conventions ("UC-XXX-<slug>.spec.ts"), and a test-case-section-to-code mapping table; the template references cover the common cases.

Workflow Clarity

A 10-step numbered Workflow with an explicit validation checkpoint (step 7 runs the tests) and an error-recovery feedback loop in step 8 — "On a failure... Mechanics first: is the frontend and the backend up, does the dev proxy forward /api/*, does the seed data exist, is the accessible name exact" — with --debug/MCP inspection, and step 10 requires reporting every failing test with step, expected, and actual values.

Progressive Disclosure

All four bundle files (use-case.spec.ts.md, test-case.spec.ts.md, markers.md, layer.md) exist, are one level deep with no nested references, and are well signaled ("template [references/use-case.spec.ts.md](references/use-case.spec.ts.md)"). However the ~220-line body keeps reference-style material inline (the Locating Elements and Assertions Reference tables), matching anchor 4's "a few key examples inline, bulk in separate file" rather than a lean overview.

Specificity

Multiple concrete actions with comprehensive coverage: "Writes end-to-end browser tests in TypeScript with @playwright/test", "a use case test (UC-XXX) with one test per scenario, or a test case journey (TC-XXX) that walks the whole Flow table across views with one test.step per row", "Locates elements by role, label, and text", and "cleans up only the data the test created" — no vague filler. Anchor 4 ('minor gaps in coverage') does not fit; the skill's actual behavior is fully enumerated.

Completeness

Explicitly answers both: the what (writes UC-*/TC-* Playwright tests in TypeScript, locates by role/label/text, cleans up created data) and the when via a direct "Use when the user asks to..." clause with concrete trigger phrases — exactly the shape of the anchor-5 example, not the weaker 'when could be more explicit' of anchor 4.

Trigger Term Quality

Six quoted natural trigger phrases users would actually say — "write Playwright tests", "create e2e tests", "test in the browser", "automate a test case", "test a user journey", "automate TC-001" — plus category synonyms ("end-to-end, browser, or UI integration tests") and artifact ID prefixes. This matches the comprehensive-synonyms anchor; anchor 4 ('a few natural terms missing') would understate the coverage.

Distinctiveness Conflict Risk

A clear niche (Playwright E2E for client-side-framework UIs) with explicit boundaries against the nearest sibling: "for any web UI that is not Vaadin" and "For a Vaadin UI use /vaadin-e2e-test", plus invocation context ("Normally run by /use-case-test... it can also be run directly"). Minimal wrong-skill trigger risk; anchor 4's 'minor overlap risk' is not warranted given the explicit disambiguation.