Names the domain ('plan', 'domain model', 'terminology') and some actions ('challenges your plan', 'sharpens terminology', 'updates documentation'), but uses somewhat abstract language like 'grilling session' and 'decisions crystallise' rather than listing precise concrete actions.

Clearly answers both 'what' (challenges plan against domain model, sharpens terminology, updates CONTEXT.md and ADRs) and 'when' (explicit 'Use when user wants to stress-test a plan against their project's language and documented decisions').

Includes some relevant terms like 'stress-test', 'plan', 'domain model', 'CONTEXT.md', 'ADRs', and 'documented decisions', but misses common natural variations a user might say such as 'review plan', 'challenge assumptions', 'domain language review', or 'architecture decision records'. Some terms like 'grilling session' and 'crystallise' are stylistic rather than natural trigger terms.

The combination of plan stress-testing against a domain model, terminology sharpening, and inline documentation updates (CONTEXT.md, ADRs) creates a clear and distinctive niche that is unlikely to conflict with generic planning, code review, or documentation skills.

Every section earns its place — no explanation of what grilling sessions are, no padding about why domain modeling matters. The skill assumes Claude understands DDD concepts and jumps straight to actionable behavioral instructions. The file structure examples are minimal but necessary to show the convention.

The skill provides highly specific, concrete guidance: exact phrases to use when challenging terminology ('Your glossary defines X but you seem to mean Y'), precise criteria for ADR creation (three conditions), explicit instructions to update CONTEXT.md inline rather than batching, and clear file structure conventions. These are directly executable behaviors, not abstract descriptions.

The workflow is implicit rather than explicitly sequenced — the skill describes behaviors to exhibit during a session but doesn't provide a clear step-by-step sequence (e.g., start by exploring codebase → read existing CONTEXT.md → begin questioning → update docs). The 'During the session' section lists parallel concerns rather than a sequenced process. There's no explicit validation checkpoint for verifying that CONTEXT.md updates are consistent or that ADR criteria were properly evaluated.

The skill is well-structured with clear sections (what-to-do, domain awareness, during the session) and appropriately references external format files (CONTEXT-FORMAT.md, ADR-FORMAT.md) for detailed formatting — keeping the main skill lean. References are one level deep and clearly signaled. Note: bundle files were not provided, but the references are well-placed and the content is appropriately split.