Conciseness

The ~35-line body is lean with clear sections and no concept explanations Claude already knows; only minor instances could be trimmed, e.g. the intro sentence 'Comprehensive guide to modern Angular state management patterns...' duplicating the frontmatter description and the tautological bullet 'The task is unrelated to Angular state management'. This matches anchor 4 (efficient with minor trimmable instances) rather than the every-token-earns-its-place anchor 5.

Actionability

The Example section gives concrete but code-free directives ('use a private writable signal and a public read-only signal', 'keep authorization on the server and test two overlapping updates before adding optimistic rollback'), while all executable code and commands are deferred to references/detailed-guide.md. That is some concrete guidance missing key executable details — anchor 3 — not 4 (no inline executable example) and not 2 (the directives are specific and testable, not vague).

Workflow Clarity

The only sequence in the body is 'Read [the detailed guide](references/detailed-guide.md) before executing this skill' with the instruction to 'Treat its safety, prerequisites, and validation requirements as mandatory' — checkpoints are signaled but deferred to the reference and implicit in the body. It matches anchor 3 (sequence present, checkpoints implicit/missing) rather than 4, though it is above anchor 2 because the read-first and focused-vs-complete loading guidance is coherent and unambiguous.

Progressive Disclosure

The bundle structure is sound: a single clearly signaled one-level-deep reference (references/detailed-guide.md, verified to exist, well-sectioned, with no nested file references) plus a well-organized overview body with When to Use / Do Not Use / Limitations / Example sections. It falls short of anchor 5 because all detailed material sits in one ~640-line guide that could be split by topic (Signals, NgRx, migration) for genuinely focused loading; it is above anchor 3 because nothing that belongs in a separate file is inlined and the reference is clearly signaled.

Specificity

The 'what' is a single generic verb ('Master modern Angular state management with Signals, NgRx, and RxJS') naming the domain and technologies but not specific actions; the concrete task contexts (setting up global state, managing component stores, choosing between solutions, migrating from legacy patterns) appear only in the when-clause. It fits anchor 3 — domain plus some concrete actions but not a comprehensive list of capabilities — rather than 4, whose 'what' lists several specific actions.

Completeness

Both what and when are explicit: 'Master modern Angular state management with Signals, NgRx, and RxJS' plus a concrete 'Use when' clause with four trigger scenarios. The 'what' relies on a generic verb rather than concrete capability statements, so it lands on anchor 4 ('when' or 'what' could be more specific) instead of 5.

Trigger Term Quality

Natural multi-word phrases Angular developers would say are present: 'Signals', 'NgRx', 'RxJS', 'setting up global state', 'component stores', 'migrating from legacy patterns'. Coverage is good but misses common variations such as 'Akita', 'optimistic updates', or 'BehaviorSubject', so it matches anchor 4 rather than 5, and is well above anchor 3's partial coverage.

Distinctiveness Conflict Risk

Naming Angular, Signals, NgRx, and RxJS carves out a clear niche with low conflict risk, but the generic trigger 'choosing between state solutions' is framework-agnostic and RxJS mentions could overlap a general RxJS skill. That minor overlap risk matches anchor 4 rather than the minimal-conflict anchor 5.