Conciseness

The body is largely lean — terse commands with one-line expected results, no explanations of concepts Claude already knows — matching the level-4 'efficient with minor trimmable instances' anchor. Two spots could be tightened: the 'Comparison reveals unexpected differences' troubleshooting block repeats the sub-bullets already embedded in workflow step 3 nearly verbatim, and the meta 'Evaluate this skill quality' command is unrelated to executing the skill. Not score-3 territory because the rest earns its tokens.

Actionability

Every command is copy-paste ready with full arguments ('./skills/ui-debug-workflow/scripts/capture-evidence.sh baseline http://localhost:3000 ./baseline') and an 'Expected result' line, covering install, capture, compare, and full-session cases. This matches the level-5 'fully executable, covers the common cases' anchor and clearly exceeds level 4's 'minor gaps'.

Workflow Clarity

The five-step 'Deterministic Workflow' is clearly sequenced, step 3 embeds an explicit validation checkpoint with a feedback loop ('verify identical conditions... check for flaky or animated elements... re-capture both runs if needed'), and step 4 records pass/fail outcomes. Error-recovery guidance is reinforced in Troubleshooting; this is a read-only evidence workflow so the destructive/batch cap does not apply. Fits the level-5 anchor with explicit validation and recovery loops.

Progressive Disclosure

The SKILL.md is a well-structured overview and the three listed references (debugging-checklist.md, browser-devtools-guide.md, evidence-templates.md — all verified to exist) plus three scripts are one level deep, matching the level-4 'good structure, references mostly clear' anchor. It falls short of level 5 because the References section is a bare path list with no signaling of what each file contains or when to consult it, and much of the reference bundle (e.g., playwright-testing-browser-automation.md, logs-evidence-collection.md) is undiscoverable from the body.

Specificity

The description lists multiple concrete actions — 'validating visual regressions, reproducing frontend bugs, comparing baseline vs changed behavior, collecting screenshots/DOM/logs, or producing stakeholder-ready UI debug reports' — comprehensively covering the skill's capability surface. It exceeds the level-4 anchor ('several specific actions; minor gaps') with no meaningful coverage gaps.

Completeness

It explicitly answers both 'what' ('Debug UI changes with a repeatable evidence-first workflow... producing stakeholder-ready UI debug reports') and 'when' with a concrete 'Use when...' clause enumerating five trigger scenarios plus a keyword list. This matches the level-5 anchor exactly; it is well above the level-4 anchor where the 'when' could be more explicit.

Trigger Term Quality

A dedicated keyword list ('ui bug, visual regression, browser devtools, playwright, screenshot evidence, dom snapshot, frontend debugging') provides good natural-term coverage with several synonyms. A few natural phrases users might say are missing (e.g., 'broken UI', 'CSS/layout bug', 'ui test'), so it fits the level-4 anchor rather than comprehensive level 5.

Distinctiveness Conflict Risk

The niche is clear (evidence-first UI debugging with baseline/changed comparison) and triggers like 'visual regression', 'screenshot evidence', 'dom snapshot' are unlikely to fire for unrelated skills. Minimal conflict risk matches the level-5 anchor; it is clearly distinct rather than 'mostly distinct'.