Conciseness

The body is dense, checklist-style directive writing with zero explanation of concepts Claude already knows — efficient, matching anchor 4. Not 5 because minor tightening is possible: the "Boundary terminology continuity" block is cryptic jargon, and "Core Principle" partially repeats "First Action".

Actionability

Concrete guidance throughout: "Run `git diff`", exact marker strings ("TBD, TODO, FIXME, HACK, XXX"), and a copy-paste output format template — anchor 4. Not 5 because the grep and lint checks are described rather than given as verbatim commands, and validation commands are deferred to external controller discovery.

Workflow Clarity

The pipeline is clearly sequenced (First Action → mechanical checks 1-6 → judgment checks 7-12 → severity model → escalate conditions → output template) with explicit validation checkpoints per check and a remediate-then-re-review feedback loop referenced in When to Use, matching anchor 5. The only mild implicitness is mapping finding severity to the APPROVED/REJECTED verdict, which is inferable from the severity definitions.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent) and the ~165-line single-file body is well-sectioned with clear headers, all earning their place inline for a single-purpose procedure — good structure with minor organization gaps. Not 5 because there is no reference split at all (e.g. the Common Rationalizations table or detailed check lists could live in a one-level-deep reference), though the inline size remains reasonable.

Specificity

"Review a task implementation against approved specs, task boundaries, and verification evidence" names several concrete review targets (specs, boundaries, evidence), matching the 'several specific actions; minor gaps' anchor. It falls short of 5 because it does not enumerate the underlying checks (diff inspection, marker greps, test runs) that would make coverage comprehensive.

Completeness

It clearly answers both questions: the "what" ("Review a task implementation against approved specs, task boundaries, and verification evidence") and an explicit "when" with three concrete trigger phrases ("after an implementer finishes a task, after remediation, or before accepting a task as complete"), matching the anchor 5 example pattern exactly.

Trigger Term Quality

Natural workflow phrases like "review", "task implementation", "remediation", and "accepting a task as complete" give good keyword coverage, matching anchor 4. Not 5 because common variations users might say (e.g. "verify the implementation", "check the task") are missing.

Distinctiveness Conflict Risk

The spec-driven task-review framing ("approved specs", "task boundaries", "implementer finishes a task") carves a clear niche with distinct triggers, but "Review a task implementation" could still fire on generic code-review requests, giving minor overlap risk with general review skills — anchor 4 rather than 5.