Conciseness

Lean and dense: behavior is conveyed through tables (checks/mechanisms/on-hit, config variables), a copy-paste install block, and terse exit-code examples. It never explains concepts Claude already knows, and every section (checks, why, install, config, examples, limitations) earns its place — matching anchor 5 rather than anchor 4's 'minor instances that could be trimmed'.

Actionability

Concrete elements are strong — exact `cp` command, ready settings.json hook config, a config-variable table, and worked examples with exit codes and stderr text — but the entire skill depends on `quality-gate.py`, which is referenced ('cp quality-gate.py ~/.claude/scripts/', 'Edit quality-gate.py') yet absent from the bundle (no scripts/ directory). That is a key missing detail, so anchor 3 fits better than anchor 4's 'minor gaps'.

Workflow Clarity

The install workflow (copy script → register Stop hook in settings.json → create learning-library files → customize LIBS) is clearly sequenced, and the Examples section documents expected exit-code outcomes for each scenario, acting as informal checkpoints. It lacks an explicit post-install validation step (e.g., test-fire the hook or run it on a fake transcript), which keeps it at anchor 4 rather than anchor 5.

Progressive Disclosure

Well-organized sections with appropriately sized inline content and clearly signaled cross-references ('See Also' listing self-audit, verification-loop, gateguard), and the bundle contains no nested or buried references. However, the one hard file dependency, quality-gate.py, does not exist in the bundle, a real organization gap that anchor 5's 'easy navigation' would not have.

Specificity

Names all three concrete detection mechanisms — 'rationalization patterns (surface text heuristics)', 'stale learning logs (filesystem mtime)', and 'low disk space' — plus the blocking behavior. Coverage of the hook's capabilities is comprehensive and mechanism-annotated, matching the anchor-5 example's level of concrete detail; anchor 4 ('minor gaps in coverage') would understate it.

Completeness

Explicitly answers both parts: the 'what' (detects rationalization patterns, stale learning logs, low disk space; blocks finishing) and a literal 'Use when Claude should be mechanically blocked from declaring work finished before quality checks and learning capture actually pass' trigger clause. Not anchor 4, since the 'when' is fully explicit and specific rather than merely adequate.

Trigger Term Quality

Includes natural phrases a user would plausibly say: 'blocks Claude from finishing', 'quality checks pass', 'stale learning logs', 'low disk space', 'learning capture'. Falls short of anchor 5 because it lacks synonym variations users might phrase the need with (e.g., 'prevent Claude from declaring done', 'session gate', 'force learning capture'), but it clearly exceeds anchor 3's 'missing common variations' level.

Distinctiveness Conflict Risk

Occupies a clear niche (mechanical, deterministic Stop hook) and explicitly positions itself against 'self-audit' ('Complements self-audit by mechanically enforcing learning capture habits'). Minor overlap risk remains: generic 'quality checks pass' phrasing could co-trigger with code-review/verification-type skills, keeping it below anchor 5's 'minimal conflict risk'.