Conciseness

Bullets are terse, but the Philosophy and Anti-Patterns sections restate Constraints/Avoid in abstract, low-signal terms ("Keep the skill focused on the decision and workflow the user actually requested", "Hiding uncertainty or missing evidence"), so the body could be meaningfully tightened. Not anchor 4 because the unnecessary text goes beyond minor trimming; not anchor 2 because there is no padded explanation of concepts Claude already knows.

Actionability

Some concrete guidance exists ("Run shellcheck or the nearest repo validation", "Prefer argument arrays and explicit paths over string-built commands", a named checklist of "strict mode, quoting, arrays, traps, paths, and temporary files"), but there are no executable examples or exact commands — key details for a bash-hygiene skill are missing. Not anchor 4 since the guidance is not mostly executable; above anchor 2 because specific tools and patterns are named.

Workflow Clarity

The Workflow section gives a clear sequence (scope, identify shell/wrappers, check, apply patterns, validate, report) and Validation adds an explicit fail-fast feedback loop ("stop at first failed gate; do not proceed until it is fixed and rerun"). Not anchor 5 because steps are generic bullets without specific commands and validation is not a concrete executable step; validation is present, so the destructive-operation cap does not apply.

Progressive Disclosure

The body is a well-sectioned overview with a dedicated Progressive Disclosure section whose referenced bundle files (references/contract.yaml, references/evals.yaml, references/task-profile.json) all exist, are one level deep, and each carry a stated purpose (machine-readable contract, benchmark/quality gates, evaluator thresholds), matching the clear-overview anchor.

Specificity

Lists three concrete actions ("Review, create, and validate Bash scripts") plus four named concern areas ("strict mode, quoting safety, portability, or interpreter-compatible behavior"), matching the 'several specific actions; minor gaps' anchor. It falls short of anchor 5 because coverage is not comprehensive (e.g., no mention of debugging or what validation involves) and is well above anchor 3's 1-2 actions.

Completeness

It answers both questions: the 'what' is "Review, create, and validate Bash scripts" and the 'when' is the explicit clause "when shell work needs strict mode, quoting safety, portability, or interpreter-compatible behavior". Not anchor 5 because the trigger is condition-based rather than concrete user-utterance phrases, but clearly above anchor 3 since explicit trigger guidance is present.

Trigger Term Quality

"Bash scripts", "strict mode", "quoting safety", and "portability" are terms users naturally say when needing this skill, giving good keyword coverage. It misses anchor 5 because common variations like "shell scripts", "shellcheck", or the ".sh" extension are absent.

Distinctiveness Conflict Risk

The bash-hygiene niche (strict mode, quoting, interpreter compatibility) is mostly distinct with domain-specific triggers. Not anchor 5 because "Review... Bash scripts" could overlap a generic code-review skill for ordinary script review requests.