Conciseness

Every token earns its place: a dense criteria table, a six-step numbered workflow, exact edit/attribution/archive templates, and terse anti-patterns — no concept explanations, no padding. Matches anchor 5 ('lean and efficient; assumes Claude's competence'); anchor 4 would require trimmable over-explanation, of which there is none.

Actionability

Mostly copy-paste-ready: exact attribution comment ('<!-- Merged from LES-XXX -->'), exact archive heading format, and concrete rg/awk commands. However, the first scan command is subtly broken — 'rg -c' on a single file prints a bare count, so the 'awk -F: '$2 >= 3'' filter matches nothing and yields no output — and Quality Gates like 'keyword search confirms the merge' give no concrete command. Anchor 4 (concrete commands with minor gaps) fits; not 5 because one provided command is not actually executable as written.

Workflow Clarity

Clear numbered 1-6 sequence plus an explicit Quality Gates checklist (so the destructive/batch cap does not apply), but there is no error-recovery loop — nothing says what to do when a gate fails — and step 6's 'run validation checks' is not concretized into a command. Anchor 4 ('clear sequence with most checkpoints present; minor validation gaps') fits; not 5 because anchor 5 requires feedback loops for error recovery.

Progressive Disclosure

Well-organized single-file skill with clear section headers (Run Criteria, Workflow, Merge Protocol, Quality Gates, Anti-Patterns) and no content that belongs in separate files, though at ~80 body lines it exceeds the under-50-line exception for a top score. The 'Merge Protocol' subsections numbered '### 3' through '### 6' cover only steps 3-6 of the workflow, a minor organizational asymmetry. Anchor 4 (good structure, minor organization gaps) is the best fit.

Specificity

Lists several specific concrete actions — 'Reviews mature LESSONS-LEARNED.md entries', 'rewrites them as permanent rules in skill/instruction files', 'archives graduated lessons' — but omits parts of the skill's function (index updates, validation gates), so coverage has minor gaps rather than being comprehensive. Not 5 because anchor 5 demands comprehensive coverage of the skill's actions; not 3 because more than 1-2 concrete actions are named.

Completeness

Explicitly answers both questions: the 'what' ('Reviews... rewrites... archives') and a rich explicit 'when' clause ('Use when graduating lessons into skills, ... or cleaning up a crowded LESSONS-LEARNED.md'). Clear what-and-when with concrete trigger phrases is exactly anchor 5; anchor 4 would require a weaker or less specific 'when'.

Trigger Term Quality

Comprehensive natural trigger phrasing including synonyms and the exact file name: 'graduating lessons into skills', 'promoting validated lessons', 'updating skills from past learnings', 'archiving mature lessons', 'codifying repeated patterns', 'cleaning up a crowded LESSONS-LEARNED.md'. Matches anchor 5's standard of natural synonyms plus the file extension/name; no common variation is missing.

Distinctiveness Conflict Risk

Occupies a clear niche — graduation of LESSONS-LEARNED.md entries into permanent skill files — with triggers ('graduating lessons', 'codifying repeated patterns', 'LESSONS-LEARNED.md') unlikely to fire for any other skill. Minimal conflict risk matches anchor 5; anchor 4 would imply overlap with closely related skills, which is not the case here.