kata-doctor

Health Checks:

1. Roadmap format migration — Detects old-format ROADMAP.md and migrates to current format
2. Phase directory collision detection — Detects duplicate numeric prefixes and migrates to globally sequential numbering

When invoked directly by user: run interactively with confirmation prompts. When invoked by other skills (auto mode): format migration proceeds automatically, collision fix reports the problem and suggests /kata-doctor for interactive resolution.

<execution_context> @./references/roadmap-format-spec.md </execution_context>