Conciseness

The ~68-line body is dense and project-specific — boundaries, evidence classifications, and exact verification commands — with no explanation of concepts Claude already knows and no padded sections. Every token earns its place, matching the 'lean and efficient' anchor.

Actionability

Guidance is concrete and executable throughout: exact tools ('Use `rg` first. Search exact symbols, method forms, event names, configuration keys, error codes, protocol strings'), copy-paste-ready commands with their working directory ('From `package/ego-browser/`, use `npm test` ... `npm run e2e` ... `npm run validate:site-skills` ... `git diff --check`'), and specific paths to inspect. For an instruction-only skill this fully covers the common cases, matching the top anchor.

Workflow Clarity

The five sections form a clear sequence (establish contract, find candidates, prove each, report before removal, implement safely) with explicit validation checkpoints: characterization tests before deletion, narrowest-checks-first ordering, and 'report any verification that could not run'. The destructive-operation cap does not apply because validation and feedback steps are explicitly present, matching the top anchor.

Progressive Disclosure

No bundle files exist and none are needed; the single-file skill is well organized into clear headed sections, with repo-file mentions (AGENTS.md, docs/native-bindings-api.md) serving as informational pointers rather than buried references. Per the simple-skill guidance, well-organized sections with no need for external references score the top anchor.

Specificity

The description names the domain ('evidence-backed simplifications in the ego-lite repository') and enumerates concrete targets ('dead code, duplicated state or APIs, speculative abstractions, unnecessary compatibility layers, hand-written infrastructure, excessive tests or documentation'), but the action verbs are limited to find/implement rather than multiple distinct concrete actions, which keeps it just below the comprehensive anchor.

Completeness

It clearly answers both parts: the 'what' ('Find and implement evidence-backed simplifications in the ego-lite repository') and an explicit 'when' ('Use when reviewing the codebase for dead code, ... or when the user asks to reduce code size or maintenance complexity without hiding behavior changes') with concrete trigger phrases, matching the top anchor exactly. A 4 would require the 'when' to be less explicit, which it is not.

Trigger Term Quality

Natural phrases users would say are well covered ('dead code', 'duplicated state', 'reviewing the codebase', 'reduce code size', 'maintenance complexity'), matching the 'good keyword coverage; a few natural terms missing' anchor. It falls short of a 5 because common synonyms such as 'clean up', 'refactor', or 'unused exports' are absent.

Distinctiveness Conflict Risk

Scoping to 'the ego-lite repository' with a distinctive candidate taxonomy gives a clear niche with only minor overlap risk, matching 'mostly distinct; minor overlap risk with closely related skills'. It is not a 5 because 'reviewing the codebase for dead code' could still collide with a generic simplify or code-review skill.