The description mentions creating a 'frozen snapshot of the validated prototype' and 'preventing production code from overwriting the validated reference artifact,' which names the domain and a couple of actions, but doesn't list multiple concrete specific actions (e.g., what files are created, what format, what locking mechanism is used).

The description explicitly answers both 'what' (creates a frozen snapshot of the validated prototype before development begins, preventing production code from overwriting the validated reference artifact) and 'when' (with an extensive list of trigger phrases and the condition 'when the user wants to create a frozen snapshot...'). The 'Use when' equivalent is clearly present.

The description provides extensive natural trigger phrases users would say: 'prototype lock', 'lock prototype', 'freeze prototype', 'preserve prototype', 'snapshot prototype', 'protect prototype', 'archive prototype', 'save the prototype', 'don't overwrite the prototype', 'lock the design', 'freeze the design'. This is thorough coverage of natural variations.

The description targets a very specific niche — locking/freezing a validated prototype artifact before development — with highly distinctive trigger terms like 'prototype lock', 'freeze prototype', 'arn prototype lock'. This is unlikely to conflict with other skills.

The skill is extremely verbose at ~250+ lines. It over-explains many steps that Claude could infer (e.g., how to detect frameworks, how cp -r works, how git tags work). The framework detection table, the detailed copy strategy table, and the extensive error handling section could all be significantly condensed. Many conversational prompts are spelled out verbatim when a brief instruction would suffice.

The skill provides highly concrete, executable guidance throughout: specific shell commands (git tag -a, chmod +x, cp -r), specific file paths, specific framework detection strategies with exact config file names, and exact validation commands per framework. The workflow is copy-paste actionable with real commands and clear decision trees.

The 9-step workflow is clearly sequenced with explicit validation checkpoints (Step 4 validates the build, Step 5 asks user to confirm access), feedback loops (retry up to 3 times on build failure), and clear decision points (user confirmation gates at Steps 1, 2, 5, and 8). Error recovery paths are well-defined throughout.

The skill references external templates (lock-report-template.md, prototype-guardrail-rules.md, pretooluse-hook-template.json) which is good progressive disclosure, but the main SKILL.md itself is monolithic with extensive inline content that could be split out. The framework detection table and error handling could be separate reference files. No bundle files were provided to verify the referenced templates exist.