Conciseness

Dense, tabular, assumes Claude's competence — no space is spent explaining what a PDF or transcript is, and every section carries skill-specific knowledge (gbrain commands, filing conventions, OCR thresholds). Not anchor 5 because the file-by-subject rule is stated four times (top 'Filing rule' note, Contract bullet, Phase 3, Anti-Patterns) and the Contract section partially restates the Phases.

Actionability

Fully executable guidance: exact commands ('gbrain files upload-raw <file> --page <slug>', 'gbrain sync'), a copy-paste-ready page template, an explicit user-report format, and concrete procedures (search brain for source URL/hash before Phase 3, retry once on transient failures, abort on auth failures). The open-ended steps (STT choice, 'delegate to enrich skill') are environment flexibility, not vagueness.

Workflow Clarity

Five clearly sequenced phases with real validation checkpoints for a mutating/batch operation: pre-create duplicate search, the OCR <80% quality gate with user flagging, retry policy, and the completion criterion 'A media item is NOT fully ingested until entity propagation is complete.' Not anchor 5: there is no post-creation verification step confirming back-links and timeline entries actually landed.

Progressive Disclosure

Well-organized sections (Input, Contract, Phases, Output Format, Error Handling, Known Pitfalls, Anti-Patterns) with external references ('skills/_brain-filing-rules.md', 'skills/conventions/quality.md') one level deep and clearly signaled via blockquotes. No bundle directories (references/, scripts/, assets/) exist, so nothing is withheld or nested; minor gap is that the pitfalls/anti-patterns content could be trimmed per the conciseness point rather than reorganized.

Specificity

Names several concrete actions — 'Ingest video, audio, PDF, book, screenshot, and GitHub repo content into the brain', 'entity extraction and backlink propagation' — with comprehensive format coverage, but deeper actions (transcribe, summarize, upload raw source) go unstated. Matches anchor 4 ('several specific actions; minor gaps'), not 3 (more than 1-2 actions present) nor 5 (not a complete action inventory).

Completeness

The 'what' is clear and concrete ('Ingest ... content into the brain. Multi-format handling with entity extraction and backlink propagation.'), and explicit trigger guidance exists in the same frontmatter via the 'triggers' list, so the missing-'Use when' cap at 3 does not apply. Falls short of anchor 5 because the 'when' is not embedded in the description text itself with concrete trigger phrases — it lives in a separate field.

Trigger Term Quality

Natural keywords 'video, audio, PDF, book, screenshot, GitHub repo' plus very natural frontmatter trigger phrases ('watch this video', 'save this podcast', 'what's in this screenshot', 'check out this repo') give good coverage with synonyms. Not anchor 5: no file extensions (.pdf, .mp3) and a few common variations (e.g. 'transcribe', 'media') are missing.

Distinctiveness Conflict Risk

A clear niche (media ingestion into the brain) with distinct trigger phrases, but 'Covers video-ingest, youtube-ingest, and book-ingest subtypes' declares overlap with what may be separate skills. Matches anchor 4 ('mostly distinct; minor overlap risk with closely related skills'), not 5 (subtype declaration introduces some conflict surface) and not 3 (the brain-ingest framing is far more specific than generic document handling).