Conciseness

The body is a lean instruction set ('Create files lazily — only when you have something to write', the three-criteria ADR gate, 'one question per turn') with no explanation of concepts Claude already knows; only minor non-operational tokens remain (the attribution blockquote, the version footer, and two ASCII directory trees), fitting anchor 4's 'efficient; minor instances that could be trimmed' rather than anchor 5's every-token-earns-its-place.

Actionability

It provides exact executable commands ('Run scripts/context_md_linter.py CONTEXT.md', 'glossary_code_consistency.py --context CONTEXT.md --code src/'), but both central write instructions point at files that do not exist in the bundle ('Use the format in [CONTEXT-FORMAT.md](./CONTEXT-FORMAT.md)' and '[ADR-FORMAT.md](./ADR-FORMAT.md)'), leaving key details unavailable — anchor 3's 'concrete guidance but incomplete; missing key details' rather than anchor 4's minor gaps.

Workflow Clarity

The three-phase workflow (pre-flight validators, in-session rules with immediate edits, closing verification) has explicit validation checkpoints and feedback loops: 're-run context_md_linter.py if the edit is structural', 're-run adr_scanner.py to confirm numbering', and 'Final glossary_code_consistency.py run to confirm no new orphan terms were introduced' — matching anchor 5's clear sequence with explicit validation and error-recovery loops.

Progressive Disclosure

The references/ files (3 real, one level deep, each with a one-line role description) and the scripts table are well signaled, but two load-bearing referenced paths — ./CONTEXT-FORMAT.md and ./ADR-FORMAT.md — dangle (absent from the bundle), breaking navigation exactly where the skill's output formats live; this sits between anchor 3 and anchor 4, and the broken central references pull it down to 3.

Specificity

The description names the domain precisely ('challenges a plan against the project's existing language (CONTEXT.md) and recorded decisions (docs/adr/)') and lists two concrete actions — challenge a plan against docs, update files inline — but coverage is not comprehensive (the interview loop, pre-flight validators, and scenario stress-testing are absent), matching anchor 3's '1-2 concrete actions, but not comprehensive' rather than anchor 4's several distinct actions.

Completeness

It explicitly answers both what ('challenges a plan against the project's existing language (CONTEXT.md) and recorded decisions (docs/adr/), and updates those files inline as terminology and decisions crystallise') and when ('Use when user wants to stress-test a plan against documented domain language, or mentions "grill with docs"') with concrete trigger phrases, matching anchor 5 exactly.

Trigger Term Quality

'stress-test a plan against documented domain language' and the literal 'grill with docs' are phrases a user would naturally say, complemented by file-specific terms (CONTEXT.md, docs/adr/); common variations like 'challenge my plan', 'ADR', or 'glossary' are missing, so it fits anchor 4's 'good keyword coverage; a few natural terms missing' rather than anchor 5's comprehensive synonym coverage.

Distinctiveness Conflict Risk

The docs-anchored grilling niche tied to CONTEXT.md and docs/adr/ artifacts is mostly distinct with specific triggers, but a generic 'review my plan' request could overlap with plain plan-review or ADR-writing skills, fitting anchor 4's 'mostly distinct; minor overlap risk' rather than anchor 5's minimal conflict risk.