Conciseness

The ~610-line body is dense and operational (little concept padding Claude already knows), but noticeably long: the ~105-line 'Auth flow templates' section, two full worked examples (dry-run and re-run), a 'Which one wins' decision tree, and 'Compatibility notes' could all be tightened or offloaded. This fits 'mostly efficient but... could be tightened' rather than the 'minor instances' of a 4.

Actionability

Mostly executable guidance: exact probe commands ("AUTH_LOGIN_URL=... AUTH_STORAGE_STATE=... node scripts/auth-bootstrap-headful.mjs"), a copy-paste gitignore-guard bash snippet, a complete smoke-spec YAML block, and exact memory.write records. The gap keeping it from 5: Phase D says "write .claude/aw-targets/local.yml from the template" without ever showing or linking the local template (only the preview template gets an explicit path).

Workflow Clarity

Phases A–G are clearly sequenced with explicit validation (Phase C probe with expected outcomes, Phase E smoke verdict table with 'Loop back to Phase B with the specific failure'), an idempotency contract for re-runs, diff-before-overwrite confirmations, a stated preview variant path (A → B → C → D → G), and a Definition of done checklist — matching the anchor for explicit validation steps, feedback loops, and checklists.

Progressive Disclosure

Section structure and reference signaling are good, but no bundle files exist (no references/, scripts/, assets/, or templates/ directories) while the body links to ./templates/, ../templates/aw-tester.agent.md, and ../../../testing/ui-verify/... paths that don't resolve in the bundle, and ~105 lines of auth-template reference material are inlined in SKILL.md instead of living in the template files. This fits 'content that should be separate is inline' at 3 rather than the well-split structure of a 4.

Specificity

The description lists multiple concrete actions with comprehensive coverage: "detects auth strategy, captures storage state, writes .claude/aw-targets/<target>.yml, and validates with a smoke spec", plus "records the repo's UI surface" and "only re-prompt for what broke or changed" for re-runs. It covers first-run, re-run, and both targets (local/preview) — no gaps, matching the anchor for comprehensive coverage rather than the 'minor gaps' of a 4.

Completeness

It explicitly answers both questions: 'what' via the enumerated actions (scaffold, detect, capture, write, validate, record) and 'when' via the concrete trigger clause "Triggers on '/aw-setup', 'setup aw-tester', 'scaffold aw-target'" plus when-to-rerun guidance ("Re-runs detect the existing aw-target"). This matches the anchor 'clearly and explicitly answers both what AND when with concrete trigger phrases'; a 4 would require the 'when' to be less explicit.

Trigger Term Quality

Explicit triggers "Triggers on '/aw-setup', 'setup aw-tester', 'scaffold aw-target'" are natural phrases a user would say, plus domain keywords (auth strategy, storage state, preview, ui-verify). A few natural variations are missing (e.g. 'auth setup', 'configure test auth', 'login capture'), so it fits 'good keyword coverage; a few natural terms missing' rather than the comprehensive synonym coverage of a 5.

Distinctiveness Conflict Risk

It occupies a clear niche tied to a specific toolchain — "scaffolds a project's aw-tester aw-target", "ui-verify runs against", "the is-ui-diff gate" — with distinct trigger phrases unlikely to collide with any other skill. This is the 'clear niche with distinct triggers; minimal conflict risk' anchor, not merely 'mostly distinct' as at 4.