Conciseness

The body is lean and assumes Claude's competence: no explanations of what domain modeling or ADRs are, no padding, and every section (file trees, example challenge phrasings, the three ADR criteria) earns its tokens — a clear match for anchor 5.

Actionability

Concrete guidance is strong in places — copy-ready challenge lines ("Your glossary defines 'cancellation' as X, but you seem to mean Y - which is it?") and three explicit ADR criteria — but the instructions "使用 [CONTEXT-FORMAT.md](./CONTEXT-FORMAT.md) 中的格式" and "使用 [ADR-FORMAT.md](./ADR-FORMAT.md) 中的格式" point to files that do not exist anywhere in the bundle, so the key details defining the required output formats are missing. This matches anchor 3 (some concrete guidance but incomplete, missing key details) rather than 4, since the gap is not minor.

Workflow Clarity

Behaviors are clearly organized with sequencing guidance ("立刻更新...不要批量攒到最后", lazy file creation rules) and a built-in check ("Cross-reference with code") that functions as a validation checkpoint, fitting anchor 4. It is not 5 because there is no explicit validate-and-recover loop for the glossary/ADR updates, though the skill involves no destructive or batch operations that would cap it at 3.

Progressive Disclosure

Section structure in SKILL.md itself is good and the two references are clearly signaled one level deep, but both referenced files (CONTEXT-FORMAT.md, ADR-FORMAT.md) are absent — there is no references/ directory or any other bundle file — so navigating to the format specifications fails entirely. Dangling references make the cross-file structure broken, which is a worse navigation failure than the buried references of anchor 3 and fits anchor 2.

Specificity

The 'what' half is only "构建并打磨项目的领域模型" (build and polish the project's domain model) — the domain is named but the capability verbs are generic; concrete artifacts (CONTEXT.md, ADR) appear only in the 'when' clause, which matches anchor 3 (domain plus 1-2 concrete actions) better than anchor 2 since the trigger clause names real deliverables.

Completeness

Both halves are present: an explicit when-clause ("适用于讨论...编写或编辑 CONTEXT.md，或记录或编辑 ADR") with three concrete triggers, plus a what-clause. It sits at anchor 4 rather than 5 because the 'what' ("build and polish the domain model") is generic and does not enumerate concrete capabilities like maintaining a glossary or challenging terminology.

Trigger Term Quality

Natural trigger phrases users would actually say are present — "codebase 术语", "CONTEXT.md", "ADR", "领域模型" — but common synonyms like glossary, 架构决策记录, or ubiquitous language are missing, fitting anchor 4 (good coverage, a few natural terms missing) rather than 5.

Distinctiveness Conflict Risk

The CONTEXT.md/ADR/domain-modeling niche is mostly distinct with clear triggers, matching anchor 4; there is minor overlap risk with general documentation or code-review skills, keeping it below anchor 5's 'clear niche with minimal conflict risk'.