Conciseness

The body is dense and assumes Claude's competence — no explaining of concepts Claude already knows — with every section carrying distinct content (e.g. the act-line vs alert-line rule, the red-flags checklist). However, the "needs more time" vs "is wedged — they have opposite fixes" distinction is repeated roughly four times (Contract, threshold-mismatch section, Anti-Patterns, Output Format), and the ~20-line incident anecdote in "Known failure modes handled" could be trimmed, fitting the 'efficient; minor instances of over-explanation that could be trimmed' anchor rather than the lean 5.

Actionability

Fully executable guidance throughout: `time gbrain sync --source source-a --no-embed`, `gbrain sources status`, `grep -n "timeoutMs\|timeout:" <the wrapper or cron script>`, `gbrain jobs list`, named env vars (GBRAIN_SYNC_FRESHNESS_WARN_HOURS / GBRAIN_SYNC_FRESHNESS_FAIL_HOURS), a copy-paste ACT_HOURS/ALERT_HOURS code snippet, and a fill-in measurement-verdict output template. Specific examples cover the common cases.

Workflow Clarity

A 5-step numbered Procedure with explicit validation checkpoints (read the alert's own numbers, compare measured vs budgeted, check the alert threshold against gbrain doctor's authoritative warn/fail lines), a red-flags checklist, and explicit error-recovery feedback ("fix it and re-measure instead of raising timeouts"; the "When it fails" section). The skill is read-only, so the destructive/batch validation cap does not apply.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent), so all content lives in a well-sectioned single file with clearly signaled, one-level-deep cross-references to sibling skills and conventions (Dedup section gives explicit boundaries for investigate, maintain, smoke-test, cron-scheduler). At ~185 lines with the incident case-study inlined, it exceeds the <50-line simple-skill exception, so it fits 'good structure; most content appropriately placed; minor organization gaps' rather than the ideal split.

Specificity

Quotes: "measure the step yourself", "Kill the theory with a stopwatch, not a code change", "Measure-first ops triage for temporal alerts ... from gbrain doctor, autopilot, sync, and cron monitors" — multiple concrete actions with named surfaces, matching the comprehensive anchor. However, the imperative second-person voice ("measure the step yourself") incurs the rubric's -1 specificity penalty, so 5 drops to 4.

Completeness

What: "measure the step yourself ... Measure-first ops triage for temporal alerts". When: "Before fixing a slow/stale/timeout alert ... runs BEFORE any timeout raise, threshold change, or pipeline rewrite" — an explicit when-equivalent with concrete trigger phrases, so the missing-'Use when' cap does not apply. Both what and when are answered clearly and explicitly.

Trigger Term Quality

Quotes: "slow/stale/timeout alert", "stale, timeout, freshness, wedged, N hours behind", "sync", "cron monitors" — comprehensive natural terms including synonyms users would actually say when paging about temporal alerts. No common variation is missing for this alert class.

Distinctiveness Conflict Risk

Quotes: "temporal alerts (stale, timeout, freshness, wedged, N hours behind) from gbrain doctor, autopilot, sync, and cron monitors" — a clear niche with distinct trigger terms tied to a specific tool ecosystem, so overlap with other skills is minimal.