Conciseness

The body is dense and operational — exact grep patterns, severity tables, tunable thresholds, and anti-drift corrections like 'There is no synchronous per-change plist rewrite to look for'. Minor trimming opportunities remain: the tool-use mandate is restated three ways, the five Invocation Examples are near-identical, and the Scope section repeats the frontmatter description — matching 'Efficient; minor instances of over-explanation' rather than the lean level-5 anchor.

Actionability

Every pattern ships exact grep patterns, executable fix code (e.g., 'try data.write(to: url, options: [.atomic, .completeFileProtection])' and the setResourceValues shadowing snippet), a graphviz location decision tree, a complete output-format template, health-scoring criteria, and output limits. This matches 'Fully executable; copy-paste ready code or commands; specific examples cover the common cases'.

Workflow Clarity

Phases 1-5 are clearly sequenced, each detection pattern follows a Search-Verify-Fix loop with explicit verification ('use Read to verify the surrounding context before reporting'), the Storage Map must be presented before proceeding, and False Positives plus Output Limits handle edge cases. This matches the level-5 anchor with explicit validation checkpoints and error-recovery guidance; as a read-only audit it is not subject to the destructive-operation cap.

Progressive Disclosure

A well-organized single-file skill (no references/scripts/assets bundle exists) with clear section headers and one-level-deep pointers to related skills ('axiom-data (skills/storage.md)', 'axiom-security (skills/file-protection-ref.md)'). It falls short of the level-5 anchor because those pointers are not clearly signaled as links and some reference-shaped material (the decision tree, cross-auditor overlap notes) is inlined in a ~320-line file rather than split out.

Specificity

The description names the domain ("file storage issues") and a single generic action ("audit storage usage") but never states what the skill actually does — no mention of detecting wrong locations, missing backup exclusions, or missing file protection. It matches the anchor 'Names the domain but actions are minimal or generic' rather than the level-3 anchor, which requires concrete listed actions.

Completeness

The description is entirely a 'when' clause ("Use when the user mentions...") with no 'what' — it never says what the skill does. This exactly matches the anchor 'only when is present without what'; it cannot score 3 because a clear 'what' is absent, not merely weakly implied.

Trigger Term Quality

"file storage issues", "data loss", "backup bloat", and "audit storage usage" are natural phrases users would say, but common variations are missing ("disk space", "storage full", "iCloud backup too large", "files disappearing"). Good coverage with a few natural terms missing, matching the level-4 anchor.

Distinctiveness Conflict Risk

Triggers like "backup bloat", "data loss", and "audit storage usage" carve a fairly distinct storage-audit niche with only minor overlap risk against generic disk-cleanup or database-storage skills. Mostly distinct with minor overlap, matching the level-4 anchor.