Conciseness

The body is dense with zero padding and assumes Claude's competence (no concept explanations), but the scope-limit theme is repeated three times ("Save only the scope the user selected", "The current explicit save request defines authority and scope", "keep the operation no larger than the explicit save request"), and the MOC/catalog hash paragraph is intricately worded. Efficient with minor trims possible — anchor 4, not lean enough for 5.

Actionability

Concrete executable commands with real argument shapes (workflow inspect/apply with --approved-plan-sha256, checkpoint, exit-75 conflict handling, transaction recover) plus specific budgets (500 words / 32 KiB hot cache, five-page read budget). Not a 5 because the central artifact — constructing the save-bundle JSON — is only sketched ("operation_type: save", workflow.catalogs shape) with no example, and commands contain unresolved placeholders ($CORE, /path/to/save-bundle.json).

Workflow Clarity

A clear sequence (Prepare → evidence check → draft transaction → inspect → review/approve → apply) with explicit validation gates: SHA-256 preconditions, the approval SHA binding, the storage_valid/workflow_complete double gate, exit-75 conflict recovery (re-read, rebuild, re-inspect), and transaction recover for interrupted applies. This matches the 5 anchor's explicit validation and error-recovery feedback loops, which is essential for a vault-mutating batch operation.

Progressive Disclosure

Sections are well organized and the three references (provenance contract, transaction contract, workflow acceptance guide) are clearly signaled, conditional, and one level deep. Not a 5 because the skill bundle itself ships no references/ or scripts/ files, all detail lives in external product-root paths that cannot be resolved from the skill directory as bundled, and intricate catalog/MOC hash policy is inlined rather than living in the already-referenced acceptance guide.

Specificity

"Save a user-selected answer, decision, insight, or session summary into an Obsidian vault as one reviewed transaction" names a concrete destination, transaction unit, and a four-type content taxonomy. It is more concrete than the 3 anchor's 1-2 actions, but not comprehensive (single core verb; the coupled index/log/hot updates are absent), so it falls just under the 5 anchor.

Completeness

Explicitly answers what ("Save ... into an Obsidian vault as one reviewed transaction") and when ("Use only when the user explicitly asks to preserve specific conversation content, not when they supply a file or URL to ingest") with concrete trigger phrases, in third person. This matches the 5 anchor; the missing-Use-when cap does not apply.

Trigger Term Quality

"Triggers: /save, save this, save that answer, file this conversation, save this analysis, keep this insight, preserve this chat result" gives good natural-phrase coverage plus the slash command. It falls short of the 5 anchor because common variants like "remember this", "note this down", or "archive this" are missing.

Distinctiveness Conflict Risk

A clear niche (preserving selected conversation content into Obsidian as one reviewed transaction) with distinct trigger phrases, and the explicit exclusion "not when they supply a file or URL to ingest" minimizes overlap with ingest/research skills. Matches the 5 anchor.