Conciseness

The body is largely lean — code examples carry minimal commentary, and the workflow/constraint lists are prescriptive rather than explanatory. It sits at anchor 4 rather than 5 because a few tokens don't earn their place: the 'Knowledge Reference' section is a bare comma-list of technology names (WordPress 6.4+, PHP 8.1+, WP-CLI, ...) Claude already knows, and several MUST NOT items ('Trust user input without sanitization', 'Output data without escaping') directly restate MUST DO items in negated form. It is well above anchor 3 since there is no concept-explaining padding anywhere.

Actionability

Guidance is fully executable and copy-paste ready: complete PHP snippets for nonce verification, sanitize/escape pairs, enqueueing with wp_localize_script, $wpdb->prepare queries, and capability checks, plus the concrete validation command `phpcs --standard=WordPress` and an explicit output checklist. It matches anchor 5 — the inline patterns cover the most common cases, with remaining detail correctly delegated to reference files.

Workflow Clarity

The six-step Core Workflow is clearly sequenced with named checkpoints: a concrete validation command in step 4 (`phpcs --standard=WordPress` plus manual nonce/capability verification) and a test/audit step 6. It fits anchor 4 rather than 5 because there is no explicit error-recovery feedback loop (what to do when phpcs fails or a check doesn't pass) — checkpoints exist but the 'validate → fix → retry' loop is only implicit.

Progressive Disclosure

The Reference Guide table (Topic | Reference | Load When) clearly signals all five reference files, each of which exists in the bundle (verified) and contains no nested references, so navigation is one level deep. The main file keeps only high-frequency patterns inline and pushes detail out — an exact match for anchor 5's 'clear overview with well-signaled one-level-deep references'.

Specificity

The description lists multiple concrete actions with specific techniques: "Develops custom WordPress themes and plugins, creates and registers Gutenberg blocks and block patterns, configures WooCommerce stores, implements WordPress REST API endpoints, applies security hardening (nonces, sanitization, escaping, capability checks), and optimizes performance through caching and query tuning" — comprehensive coverage of the domain with no vague filler. It matches anchor 5 rather than 4 because coverage spans the full domain (themes, plugins, blocks, WooCommerce, REST API, security, performance) with concrete mechanisms named, not just 'several actions with minor gaps'.

Completeness

It explicitly answers both questions: the 'what' is a concrete capability list, and the 'when' is an explicit "Use when building WordPress themes, writing plugins, customizing Gutenberg blocks, extending WooCommerce, working with ACF..." clause with concrete trigger phrases — an exact match for anchor 5. Not 4, because the 'when' is explicit and specific rather than merely present with room to improve.

Trigger Term Quality

Natural trigger phrases users would actually say are comprehensively covered: "building WordPress themes", "writing plugins", "customizing Gutenberg blocks", "extending WooCommerce", "working with ACF", "using the WordPress REST API", "applying hooks and filters". It matches anchor 5's comprehensive natural-term coverage (synonyms included — 'Gutenberg blocks', 'custom blocks', 'ACF'); file extensions are inapplicable to this domain, and no meaningful natural term is missing.

Distinctiveness Conflict Risk

The niche is unambiguous — every trigger term (WordPress, WooCommerce, Gutenberg, ACF, WordPress REST API) is distinctively WordPress and would not fire for a generic PHP/Laravel task, matching anchor 5's 'clear niche with distinct triggers; minimal conflict risk'. The only conceivable overlap is with a generic PHP skill, but the trigger vocabulary makes misfiring unlikely.