Conciseness

Every line carries project-specific operational knowledge Claude cannot know ("**`en.js` is authoritative.**", "reload-on-switch... Don't add live re-render wiring", "Use `window.t` (not bare `t`) inside functions that have a local variable named `t`"). There is no explanation of general concepts and nothing to trim, matching the lean anchor rather than the 4 anchor's "minor instances of over-explanation".

Actionability

Guidance is fully executable: exact commands (`npm run i18n:report`, `npm run i18n:check`, `npm run dev`, `?lang=fr`), exact file paths (`engine/i18n/{en,fr,es,zh}.js`, `tools/i18n-check.js`), concrete code patterns (`data-i18n="key"`, `window.t('key')`, `tx('prefix.' + item.id, item.label)` guarded by `if (window.TWI18N)`), and a copy-paste-ready new-language recipe (`cp engine/i18n/en.js engine/i18n/de.js`, change `g.en` → `g.de`).

Workflow Clarity

The six-step "loop" is clearly sequenced with explicit validation checkpoints and a feedback loop: step 3 reports what's missing, step 5 says "`npm run i18n:check` until it passes", and step 6 mandates real-app verification ("never claim done from files alone"). The new-language section repeats the check-then-verify pattern, matching the anchor-5 example with validation and retry built in.

Progressive Disclosure

The skill has no bundle files, and the body is a well-organized single file: focused sections (loop, scope, style, glossary, new language) with deep architecture correctly delegated one level deep ("Read `docs/i18n.md` first if you need the architecture"). Nothing that belongs in a separate file is inlined at burdensome length — the inline glossary table is exactly the content needed mid-task — so it meets the well-signaled, easy-navigation anchor rather than the 4 anchor with organization gaps.

Specificity

"Add, translate, or audit TinyWorld UI strings across English/French/Chinese/Spanish" lists multiple concrete actions covering the skill's full remit, plus the glossary/no-API constraints. It sits at the comprehensive anchor rather than 4 because no meaningful capability in the skill's scope is left unlisted.

Completeness

It explicitly answers both questions: the what is "Add, translate, or audit TinyWorld UI strings across English/French/Chinese/Spanish" (with the no-API mechanism stated), and the when is a four-part "Use when..." clause with concrete triggers (adding gameplay text, `npm run i18n:check` fails, untranslated string, adding a new language). This matches the anchor-5 example structure; score 4 would require the when to be less explicit, which it is not.

Trigger Term Quality

Natural phrases like "translate", "UI strings", "a string shows up in English in a non-English locale", "adding a new language", and the named languages give good keyword coverage, and "non-English locale" partially covers the locale vocabulary. It falls short of the 5 anchor because common synonyms like "localization"/"L10n"/"internationalization" are absent.

Distinctiveness Conflict Risk

"TinyWorld UI strings", the project-specific command `npm run i18n:check`, and the established glossary carve out a clear niche with distinct triggers and minimal conflict risk against generic translation or docs skills. It is not the 4 anchor because there is no plausible overlap with a closely related generic skill given the project naming.