Conciseness

The body is command-dense with almost no conceptual explanation (no "what a shell is", no library tutorials); each step states its intent in one line plus a runnable command. It is not level 5 because the six-line security blockquote and some parenthetical asides ("e.g. sandbox restrictions, blocked commands", "For quick checks on macOS/Linux") add tokens that could be tightened. It is well above level 3, where noticeable padding would appear.

Actionability

Every step gives copy-paste-ready commands: "go test -race ./interp/... ./tests/... -run \"$ARGUMENTS\" -v 2>&1 | head -200", "docker run --rm debian:bookworm-slim bash -c '<the script from the failing test>'", and even the exact fuzz corpus file format with its destination path "interp/builtins/tests/<pkg>/testdata/fuzz/<FuzzFuncName>/<hash>". This matches the 'fully executable; copy-paste ready; covers the common cases' anchor; there are no gaps that would drop it to 4.

Workflow Clarity

The eight-step sequence is well ordered (reproduce → determine bash ground truth → classify → fix → verify) with per-fix verification in step 4, suite-wide verification in step 7, and an explicit feedback loop ("If new failures appear, repeat from step 1 for those failures") that would merit a 5. However, there are two sections numbered "### 7." ("Verify all fixes" and "Run bash comparison tests"), a genuine editorial defect that muddles the step sequence — a minor gap consistent with level 4 rather than the fully clean level 5.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent), and none are needed: the content is a single linear workflow, not reference material that should be split out. Section headers (Workflow, numbered steps, classification table) make navigation easy, matching level 4's 'good structure; most content appropriately placed'. It does not reach level 5 because the under-50-lines simple-skill exception does not apply to this ~130-line body, and no navigational aids (TOC or overview of steps) are provided; it stays above level 3 because nothing that belongs in a separate file is inlined.

Specificity

"Fix failing tests by prioritising shell implementation fixes to match bash behaviour" names the domain (fixing failing tests) and one concrete action (prioritising implementation fixes to match bash), but stops there — no coverage of the other activities the body actually handles (updating test expectations, fuzz corpus handling). It matches the anchor 'Names domain and 1-2 concrete actions, but not comprehensive' and is not level 4 because several specific actions are missing, nor level 2 because the action given is concrete rather than generic.

Completeness

The "what" is clear (fix failing tests, prioritising implementation over test changes), but there is no "Use when..." or equivalent trigger clause — the judging guidelines explicitly cap completeness at 3 in that case. It is not level 2 because the 'what' is concrete, and not level 4 because 'when' is entirely absent rather than just weakly implied.

Trigger Term Quality

The phrases "failing tests" and "fix" are natural things a user would say, but there are no synonyms or variations ("test failures", "broken tests", "regressions", "go test", "flaky") and "shell implementation fixes to match bash behaviour" is internal jargon a user would not naturally utter. This fits 'Some relevant keywords but missing common variations or synonyms'; it is above level 2 (keywords are relevant, not generic) but below level 4 (several natural terms are missing).

Distinctiveness Conflict Risk

The "match bash behaviour" framing carves out a fairly distinct niche (shell-implementation conformance testing) with minor overlap risk against generic "fix tests" or "run tests" skills, since "Fix failing tests" alone could collide with those. Fits 'Mostly distinct; minor overlap risk with closely related skills'; not level 5 because the opening phrase is generic enough that a plain 'fix my tests' request could route here over a more generic test-fixing skill.