Conciseness

The body is dense and unpadded, but sections like Maintainability ("Naming. Functions and variables named for what they do", "Comments. Explain why, not what", "No literal `60000` in code. Use named constants") and much of the Security dimension restate principles Claude already knows. This fits anchor 3 ("mostly efficient but includes some unnecessary explanation") better than anchor 4, where over-explanation would be only a minor instance rather than recurring sections.

Actionability

Concrete instruction-only guidance throughout: specific checks ("Session cookies have `Secure`, `HttpOnly`, `SameSite` attributes set"), a runnable command ("`git log --oneline`"), and an explicit output artifact ("a markdown document at `code-review-[date].md`" with a six-section structure). Minor gaps keep it below anchor 5 — e.g., few executable commands for verifying findings in the review workflow.

Workflow Clarity

Two clearly numbered sequences with several checkpoints ("Reproduce locally. Confirms it's a code issue", "Check cache state... before concluding it's a code bug", "Verify in production. Check the actual fix worked"). Not capped at 3 since this is a review skill, not a destructive/batch operation; it stays at 4 rather than 5 because there is no explicit fix-and-retry feedback loop and the review workflow lacks a verify-findings step.

Progressive Disclosure

The ~200-line body is a genuine overview: stack-specific detail is split into three real, one-level-deep reference files (verified on disk; they contain no references beyond a back-link to SKILL.md), clearly signaled both inline ("Use the template in references/review-template.md") and in a dedicated "Reference files" section. This matches anchor 5's clear overview with well-signaled one-level-deep references.

Specificity

"Review web application code for bugs, security issues, performance problems, and stack-specific anti-patterns" lists several specific actions across the review domain. It stops short of anchor 5 because the actions are review categories rather than a comprehensive enumeration (e.g., no mention of deliverables like review reports or postmortems).

Completeness

It explicitly answers what ("Review web application code for bugs, security issues, performance problems, and stack-specific anti-patterns") and when ("Use this skill whenever the user wants to review code, debug a production issue, investigate a build failure, audit security, or check a PR before merging") with concrete trigger phrases. Anchor 4 would apply only if the 'when' were less explicit.

Trigger Term Quality

"code review, review my code, debug, build error, broken, not working, why is X failing, check this code, security check, PR review, audit code, refactor" plus "4xx or 5xx errors, deploy failures, environment variable issues, and CMS integration problems" gives comprehensive coverage of natural user phrasings and synonyms. This matches the anchor-5 example's breadth of variations.

Distinctiveness Conflict Risk

Distinctive triggers like 4xx/5xx errors, deploy failures, and CMS integration problems carve a clear web-review niche, but generic terms ("review code", "debug", "refactor") create minor overlap with closely related skills such as general code review or refactoring skills. It is mostly distinct, matching anchor 4 rather than anchor 5.