Conciseness

Every section conveys repo-specific facts Claude cannot know (external screenshot service keyed by SHA, hash pinning, Linux-runner byte differences, the three CI surfaces), with the outcome table being the most token-efficient presentation. No padding or explanation of known concepts, matching the lean anchor 5.

Actionability

Copy-paste-ready commands throughout: "gh api repos/microsoft/vscode/actions/jobs/<JOB_ID>/logs", "gh pr checks <PR> --json name,link,bucket", the curl image fetches, the executable python3 PIL diff-bbox snippet, "git diff", and "gh run download". Placeholders are values the skill itself shows how to obtain, and the fork-PR path is covered, matching anchor 5.

Workflow Clarity

A clear 3-step sequence with explicit validation checkpoints: Step 2 is a verification gate ("Confirm the delta matches what the PR intends… treat it as a regression and fix the code instead of the hashes"), Step 3 verifies the edit via git diff ("the exact inverse of the diff CI reported"), and the re-running check closes the feedback loop. The destructive/batch cap does not apply because validation is present, matching anchor 5.

Progressive Disclosure

A single-file skill with no bundle directories; the content is one coherent procedure where splitting would hurt. Sections are well-organized and repo-file references (blocks-ci-screenshots.md, screenshotBlocksCi.ts, the workflow file) are clearly signaled and one level deep, satisfying the simple-skill exception.

Specificity

"Update the committed blocks-ci screenshot hashes" and "investigate a screenshot diff reported on a PR" are concrete, domain-specific actions in third person voice. It lists several specific actions but coverage is slightly narrow (e.g., render-failure variants covered by the body are absent), fitting anchor 4 rather than the comprehensive anchor 5.

Completeness

What ("Update the committed blocks-ci screenshot hashes… or investigate a screenshot diff") and when ("Use when asked to update, accept, or refresh component screenshot baselines from CI", plus the concrete condition "after the 'Screenshots & Tests' check fails") are both explicitly answered with concrete trigger phrases. Not 4 because the 'when' is fully explicit, not merely present.

Trigger Term Quality

"update, accept, or refresh component screenshot baselines from CI" provides good natural-verb coverage with synonyms, and "blocks-ci" matches what repo users would say. A few natural variations (e.g., "visual regression", the fixture file name) are missing, so it fits anchor 4 rather than the comprehensive anchor 5.

Distinctiveness Conflict Risk

"blocks-ci screenshot hashes" and "component screenshot baselines from CI" define a clear niche with distinct triggers, making conflict with other skills minimal. Fits the anchor-5 example's pattern of a specific artifact type plus explicit trigger conditions.