Conciseness

The body is ~738 lines / ~34k tokens, and a substantial share is not visualization guidance but skill self-governance (“加规则之前先读这节”的准入规则、grep 核对流程、盲测方法、grandfather-clause audits) and dated war stories (2026-07、2026-08-07、2026-08-12、2026-09-18) that read as change-log material. The rubric explicitly penalizes time-sensitive dates outside a deprecated/old-patterns section and verbosity even when accurate — this matches 'noticeably verbose; several unnecessary explanations or padded sections' rather than the mostly-efficient level 3.

Actionability

Guidance is maximally concrete for an instruction-only skill: quantified criteria (“top-2 时点占了合计的多少？过半就得在图上让这件事可见”), exact formulas (`0.05 + 0.5*sqrt(value/max)`), explicit three-way procedures (“不画 / 画在另一根线上 / 换成可比口径”), field schemas for dynamic quantification (`{ id, track, operation, label, delta, from, to, at, duration }`), measurement tolerances in CSS px, and a required observable 产物 line after every gate item. Per the rubric's scoring note, absence of code is not penalized when guidance is this actionable; this sits above the 'minor gaps' level-4 anchor.

Workflow Clarity

A clearly sequenced five-phase pipeline (定意图 → 验数据 → 选形 → 编码 → 交付前自检) with a handoff checklist closing each phase, a 9-item DO-CONFIRM delivery gate that demands written, observable artifacts (“写不出来的那条就是没过”), explicit exemption conditions, feedback loops for error recovery (被批之后的系统性分析、逐条 grep 盲测、“当场写回”), and gate↔phase traceability (“闸门对应”). This matches the top anchor: explicit validation steps, feedback loops, and checklists for a complex process; the destructive/batch cap does not apply.

Progressive Disclosure

References are genuinely well done: three real files, one level deep, each listed in a table with a “什么时候读” trigger plus a “先读哪个” routing paragraph, and deep material (chart-selection statistics, visual form selection, perception science) is appropriately external. However the SKILL.md body itself is far from an overview — it inlines 700+ lines of rules, anti-pattern table, and skill-self-maintenance material that the rubric's rationale says should be split, so it fits 'good structure; most content appropriately placed; minor organization gaps' rather than the clear-overview top anchor.

Specificity

The description enumerates many concrete judgment actions — “用均值还是中位数、能不能聚合、堆叠还是折线、能不能上双轴、配色与颜色数量、同一实体跨图是否同色同位、表格该留几列” — plus a full media list (HTML 报告页、React/Vue dashboard、PPT 原生图表、matplotlib/plotly/ECharts/D3、PNG). This is comprehensive, specific coverage of the domain, matching the 'multiple specific concrete actions; comprehensive coverage' anchor; it is well above the 'several specific actions; minor gaps' level 4 anchor.

Completeness

Both questions are answered explicitly: what it does (“管『该不该这么画』” with the enumerated judgment list) and when to use it (“Use when 动手画图之前，或评审既有图表”), plus explicit negative boundary (“Not for 报告页的排版/组件/交互…或 PPT 原生图表的实现与渲染陷阱”) with pointers to the right skills. This matches the top anchor with concrete trigger phrases, not the level-4 anchor where 'when' could be more specific.

Trigger Term Quality

Natural trigger terms a user would actually say are covered: 图表、dashboard、看板、PPT、matplotlib/plotly/ECharts/D3, plus quoted user phrasings like “这几张图有什么问题” and “图例为什么不一致” and the trigger moment “动手画图之前，或评审既有图表”. Coverage includes synonyms and tool names across all supported media, matching the comprehensive anchor; only trivially common variants are absent, which is the level-4 description, not this one.

Distinctiveness Conflict Risk

It carves a clear niche — the judgment layer (“该不该这么画”) as SSOT, loaded before drawing — and explicitly disambiguates from the two nearest skills via “Not for …（用 report-with-html:report-with-html）或 …（用 deck-creator:deck-creator）”, eliminating the overlap risk that the level-4 anchor still allows. Trigger phrases are domain-specific and unlikely to fire the wrong skill.