Conciseness

The body is dense and assumes domain competence — no basic-concept padding, information carried in compact tables, and time-sensitive version facts correctly isolated in a dedicated 'Versioning and deprecation' section. It is not a 5 because the NDA-handling convention is stated three times (Overview NDA note, Certification regimes section, Limitations) and the category notes overlap content repeated in the comparison and anti-pattern tables.

Actionability

Both workflows are fully executable for an instruction-only skill: the checklist workflow names its inputs (target platform, milestone context, feature list, SKUs), the exact output table columns (`# | Requirement | Description | Test Category | Pass Signal | N/A?`), and hard rules ('never silently omit', 'refuse to emit a checklist item whose claim has no available source'); the triage cheatsheet maps specific symptoms to category, owner, and severity. Specific examples cover the common cases, matching the level-5 anchor.

Workflow Clarity

Multi-step processes are clearly sequenced with explicit validation checkpoints: the triage workflow closes with a verify step ('confirm the category and requirement ID still resolve in the current requirements list before closing — a stale XR number is the common triage error'), the checklist workflow has error-handling rules (mark N/A with reason, never silently omit; refuse unsourced claims and surface the gap), and the sequencing section is an ordered procedure with an explicit counter-case caveat. This matches the level-5 anchor with validation steps and error-recovery guidance.

Progressive Disclosure

The body is a clear overview that splits per-regime detail into four real, one-level-deep reference files (references/xbox-certification.md, console-nda-regimes.md, steam-direct.md, platform-cert-details.md — all present in the bundle, none of which reference further files), each clearly signaled by topic ('Per-regime detail lives in one reference file each'). Easy navigation with section headers; matches the level-5 anchor.

Specificity

The description lists multiple concrete actions in third person ("Defines the six canonical test categories", "documents the submission workflow, severity vocabulary, test-bench configurations, and known SLAs", "includes the building-a-cert-checklist workflow"), covering the skill's capabilities comprehensively. It matches the level-5 anchor for multiple specific concrete actions; no capability is left at vague abstraction.

Completeness

It explicitly answers both questions: the 'what' ("Reference catalog of game-QA test categories and the four platform-holder certification regimes...") and the 'when' ("Use when planning a game test pass or cert calendar, mapping internal QA findings to the platform's vocabulary, sequencing submissions across platforms, or emitting a pre-submission checklist") with four concrete trigger phrases. This matches the level-5 anchor exactly.

Trigger Term Quality

It includes natural phrases a QA lead would actually say when reaching for this skill: "planning a game test pass", "cert calendar", "pre-submission checklist", "mapping internal QA findings", "sequencing submissions", plus platform names (XR, TRC, Lotcheck, Steam Direct) that serve as synonyms. Coverage is comprehensive with common variations present, matching the level-5 anchor rather than the 'a few natural terms missing' level-4 anchor.

Distinctiveness Conflict Risk

The certification-vocabulary niche is clearly distinct from generic skills, but the trigger "Use when planning a game test pass" is broad enough to also match closely related sibling skills in the same bundle (the body defers scenario authoring to `game-test-scenario-author`), giving minor overlap risk. This fits the level-4 anchor ('mostly distinct; minor overlap risk with closely related skills') rather than level 5's 'minimal conflict risk'.