Conciseness

The body is dense and imperative with zero padding — every section ('Core rule', 'Workflow', 'Asset sourcing', 'Report') issues instructions and assumes Three.js competence, e.g. 'Glow does not make primitives look AAA. Build authored forms first, then materials, then lighting, then effects — in that order.' No known concepts are re-explained, so it matches the lean anchor rather than the level-4 'minor instances of over-explanation' anchor.

Actionability

Guidance is mostly concrete: a specific script to run ('run threejs-game-director/scripts/probe_asset_credentials.sh first'), explicit per-task file routing in the references table, and measurable thresholds ('every premium category is at least 2'). It sits at level 4 rather than 5 because most executable detail (commands, code recipes, budget tables) is delegated to the reference files rather than present in the body, and the workflow steps themselves are directive rather than copy-paste ready.

Workflow Clarity

The 8-step workflow has a clear sequence with an explicit validation feedback loop: 'Re-score against the calibration anchors, citing the inspector's measured metrics. Keep going until every premium category is at least 2, or name the exact blocker.' It also includes checkpoints ('Inspect the concept/model before dependent generation or rigging') and failure-recovery guidance ('a single timeout is not evidence that generation is unavailable'), matching the level-5 anchor with feedback loops.

Progressive Disclosure

The body is a lean overview with a well-signaled references table ('Read it when' column) routing to four real one-level-deep files, all verified present in the bundle; the calibration anchors in assets/scorecard-anchors/ are properly reached through references/visual-scorecard.md. Content is appropriately split with easy navigation, matching the level-5 anchor exactly.

Specificity

The description lists ten concrete capabilities ('art-direction critique, procedural model building, material and texture libraries, world prop kits, shaders, VFX, lighting and render pipeline, LOD and instancing, render budgets, and a 10-category visual scorecard'), which is comprehensive, specific coverage of the skill's domain. It exceeds the level-4 anchor because there are no meaningful gaps in the capability enumeration.

Completeness

It explicitly answers both questions: the 'what' is the upgrade pass with its enumerated capabilities ('Upgrade Three.js games from prototype visuals to premium browser graphics: ...'), and the 'when' is a concrete trigger clause ('Use when screenshots still look basic or the user asks for premium, AAA, high-fidelity, showcase, or less-basic graphics'). This matches the anchor-5 example structure directly.

Trigger Term Quality

The 'Use when' clause covers natural phrases users would say: 'screenshots still look basic', 'premium', 'AAA', 'high-fidelity', 'showcase', 'less-basic graphics'. It falls short of the level-5 anchor's comprehensive synonym coverage because common variations like 'polish the visuals', 'make it look better', or 'juice' are absent.

Distinctiveness Conflict Risk

The description is niched to Three.js game graphics upgrades with distinct trigger vocabulary ('AAA', 'showcase', 'prototype visuals'), so it is clearly distinguishable from generic Three.js, asset-generation, or art skills. It is not level 4 because no meaningful overlap with a closely related skill's triggers is apparent.