Conciseness

Mostly efficient project-specific content — the schema, procedure, and quick commands with expected results all earn their tokens — but a few stretches could be trimmed: the "Mindset" section spends ~15 lines on design philosophy ("The index is a cache, never a ledger"), and each of the four anti-patterns carries a "Consequence:" line that largely restates its "WHY:". This fits the score-4 anchor (efficient with minor over-explanation to trim); it is not 5 because those sections are not lean, and not 3 because there is no explanation of concepts Claude already knows and no padding filler.

Actionability

Fully executable guidance throughout: complete YAML frontmatter schema, exact invocations (`./scripts/check-context-frontmatter.sh .context/**/*.md`, `./scripts/regenerate-context-index.sh`, `./scripts/context-ready.sh --blocked`), and an expected result for every command ("OK: <N> file(s) validated against schema", "a list of active files with zero open blockers"). It matches the copy-paste-ready anchor covering the common cases; it is not 4 because there are no significant gaps in the commands or their success/failure outputs.

Workflow Clarity

The 5-step procedure is clearly sequenced with explicit checkpoints and feedback loops for what is a batch operation over every context file: step 1 has a "**Verify:** the script prints nothing and exits 0" gate, and step 4 has "**Stop if:** it reports files excluded on stderr; go back to step 2". This matches the anchor-5 validate/fix/re-validate loop pattern; it is not 4 because validation is explicit at every risky stage rather than implied.

Progressive Disclosure

Good structure overall: the body stays an overview, details are pushed one level deep into a real, well-signaled reference (a References table with per-row "When to Use" columns pointing to references/regeneration-reference.md, which exists), and all six documented scripts exist on disk. It is not 5 because of minor organization gaps found against the actual bundle: scripts/check-wave-evidence.sh is bundled but never mentioned anywhere in SKILL.md (orphaned, discoverable only by listing scripts/), and two reference table rows point at the same regeneration-reference.md for different topics.

Specificity

Multiple concrete actions are stated precisely: "Regenerates the project's context index (index.yaml) from the YAML frontmatter across every context file", "validates that each file carries the required frontmatter fields", and "computes which active files are ready to work on, from optional typed `blocks`/`blocked-by` dependency links". This matches the anchor for multiple specific concrete actions with comprehensive coverage of the skill's scope; it is not score 4 because there are no meaningful gaps in the action inventory, and not below because nothing is generic.

Completeness

Both questions are answered explicitly: the "what" is the three concrete actions above, and the "when" opens with "Use when the index is stale, context files were added, renamed, or removed, a pre-commit gate blocks a commit..." plus a "when not" boundary ("Do not use it to create new context files (use create-context-file instead), to hand-edit the index..."). This mirrors the anchor-5 example structure (what + concrete "Use when" triggers) and is not score 4, where the 'when' would be less explicit or lack concrete trigger phrases.

Trigger Term Quality

Natural user phrasings are comprehensively covered with synonyms: "the index is stale", "context files were added, renamed, or removed", "a pre-commit gate blocks a commit because a context file is missing frontmatter", and "someone asks what's ready/unblocked/blocked". These are phrases a user would plausibly say verbatim; it exceeds the score-4 anchor ("a few natural terms missing") and clearly fits the comprehensive-coverage anchor.

Distinctiveness Conflict Risk

The niche (regenerating a derived context index) is distinct and the description actively resolves the main collision risk by routing to the companion skill: "Do not use it to create new context files (use create-context-file instead), to hand-edit the index, or as a substitute for fixing frontmatter at the source." Clear niche with distinct triggers; it is not score 4 because the overlap risk with the closely related create-context-file skill is explicitly disambiguated rather than merely minor.