The content is extremely lean - it's a redirect notice that efficiently communicates the skill has been merged elsewhere. Every token serves the purpose of directing users to the correct location.

Provides a clear pointer to the replacement skill and mentions 'Mode 2', but doesn't explain what Mode 2 is or how to invoke it. The actionable guidance is essentially 'go elsewhere'.

For a redirect/deprecation notice, the workflow is unambiguous: this skill is deprecated, use the other one. No multi-step process exists here that would require validation checkpoints.

Appropriately structured as a brief notice with clear links to the canonical location. Lists what functionality moved without duplicating the actual content.

The description contains no concrete actions - it only references another skill and vaguely mentions 'creating new plans' and 'restructuring existing monolithic planning documents' without specifying what actions are performed.

This is a redirect/deprecation notice, not a functional skill description. It doesn't answer 'what does this do' (only says use another skill) and has no explicit 'Use when...' clause.

Contains some relevant terms like 'plans', 'planning documents', 'hierarchical directory structures', but these are embedded in a redirect notice rather than presented as natural trigger terms users would say.

The mention of 'implementation-planner' and 'hierarchical directory structures' provides some distinctiveness, but the description's purpose is to redirect rather than distinguish this skill's unique capabilities.