Conciseness

The body is lean and operational throughout — e.g. 'Planning only. Never change product code, open a PR, or push' and 'Exit 2 is never a pass' — with zero padding and no explanation of concepts Claude already knows. Every token earns its place; not even minor trimming is apparent (anchor 4), so anchor 5 fits.

Actionability

Most commands are concrete and flag-complete ('$H/collect.ts --run $RUN', '$J/jira-upsert.ts --run $RUN --key <KEY> --system <system> --apply', '$S/summarize.ts --run $RUN'), matching anchor 4's 'concrete code or commands with minor gaps'. It falls short of anchor 5 ('copy-paste ready... common cases') because two invocations are named without any argument syntax — 'read 3 to 6 fix PRs with `$H/pr.ts`' and 'Scaffold it with `$P/new-plan.ts`' — and `<dataDir>` is never defined in this file.

Workflow Clarity

Nine numbered steps in a clear sequence with explicit validation checkpoints and feedback loops: preflight doctors with 'Stop on any nonzero exit', '$J/jira-upsert.ts --plan <file>` (a dry run), then add `--apply'', and 'Exit 1 means some hot system is still undecided, so go back to step 7'. This matches anchor 5 (explicit validation steps, error-recovery loops, checklist-style hard rules) rather than anchor 4, which has 'minor validation gaps'.

Progressive Disclosure

The body is a clear orchestrator overview that states 'each step's details live in that skill's SKILL.md' and maps exactly which of the four sub-skills owns what (history/scoring, Jira dedup, plans, run format), with one-level-deep pointers like '.agents/skills/refactor-plan/references/rubric.md'. The bundle's own script (scripts/summarize.ts) is referenced in the body as '$S/summarize.ts', so referenced paths resolve; this matches anchor 5 (clear overview, well-signaled one-level-deep references, content appropriately split) rather than anchor 4, which would leave organization gaps.

Specificity

It lists multiple specific concrete actions covering the whole workflow: 'find the systems the last day's commits hit hardest', 'use three weeks of history to tell fragile from fast-moving', 'write a plan per systemic fix', and 'file deduplicated Jira tickets' — comprehensive coverage matching anchor 5. It exceeds anchor 4 ('several specific actions; minor gaps') because no part of the skill's job is left unnamed.

Completeness

Both halves are explicit: the 'what' is the four concrete actions, and the 'when' is stated as 'Use for /identify-fragile-systems or the nightly run' with the boundary 'For a single bug report, use investigate-bug instead'. This matches anchor 5 ('clearly and explicitly answers both what AND when with concrete trigger phrases') rather than anchor 4, where the 'when' would be less explicit.

Trigger Term Quality

Good keyword coverage with natural terms: 'nightly refactor review', 'fragile', 'fast-moving', 'Jira tickets', 'commits', plus the explicit triggers '/identify-fragile-systems' and 'the nightly run' — matching anchor 4's 'good keyword coverage; a few natural terms missing'. It falls short of anchor 5 (comprehensive synonyms) because common variations users might say — e.g. 'tech debt', 'hot spots', 'code churn', 'flaky' — are absent, though it is clearly above anchor 3's 'missing common variations'.

Distinctiveness Conflict Risk

It carves a clear niche (nightly system-level refactor triage with Jira filing) and actively reduces conflict risk with the disambiguation 'For a single bug report, use investigate-bug instead' — anchor 5's 'clear niche with distinct triggers; minimal conflict risk'. Anchor 4 would require minor overlap risk with closely related skills, which the explicit routing rule preempts.