Conciseness

The body is mostly lean and assumes Claude's competence, but the 'Quality Bar' section re-asks questions already covered in Stage 1 (success criteria) and Stage 3 (reader testing), a minor instance of over-explanation that could be trimmed — anchor 4 rather than 5.

Actionability

Provides concrete, ready-to-use guidance — the Stage 3 review prompt is copy-paste ready, Stage 1 lists seven specific questions, and Stage 2 gives a numbered iteration loop — but lacks a worked example (e.g., a filled-in context snapshot or section intent), leaving minor gaps versus anchor 5.

Workflow Clarity

Three clearly sequenced stages each carry a Goal and Output, with an explicit feedback loop in Stage 2 (draft → review → revise) and a validation step in Stage 3 (reader testing producing a fix list), but cross-stage error recovery (e.g., returning to Stage 1 when Stage 3 reveals missing context) is implied rather than explicit — anchor 4.

Progressive Disclosure

The body is a well-organized overview that externalizes detail into the one-level-deep references/templates.md, signaled clearly via 'Load references/templates.md and pick the closest template', but the reference is a plain path rather than a clickable link and the Quality Bar section mildly overlaps earlier content — anchor 4 rather than 5.

Specificity

Names the domain plus several concrete actions — 'context capture, outline-first drafting, and context-free reader testing' and 'turn messy context into a readable artifact' — but the actions are process-level rather than discrete operations, and phrases like 'high-signal docs' and 'messy context' are mildly abstract, so it sits at anchor 4 rather than 5.

Completeness

Explicitly answers both what ('A structured workflow for co-authoring high-signal docs...') and when ('Use when the user needs to turn messy context into a readable artifact with clear goals, tradeoffs, and next steps'), matching the anchor 5 requirement for concrete trigger phrases on both axes.

Trigger Term Quality

Good natural keyword coverage via 'PRD, RFC, design docs, proposals, decision records' and 'co-authoring', but common synonyms like 'spec', 'memo', 'write-up', or 'one-pager' are missing, placing it just below the comprehensive anchor 5.

Distinctiveness Conflict Risk

Carves a clear niche — structured co-authoring of PRD/RFC/design-doc/proposal/decision-record artifacts via a named 3-stage workflow — with a specific trigger unlikely to fire for unrelated skills, matching the anchor 5 'clear niche with distinct triggers'.