Skill: doc-author

Purpose

Guide a user through authoring a new document using the GoodDocs template and validation rules.

Behavior

1. If repo.config.json exists, use defaultDocTypeKey and defaultOwners automatically.
2. Ask the user for:
   • Title
   • Motivation
   • Proposed solution
   • Alternatives/open questions
3. Determine the next numeric ID by scanning docs/<docRoot> for ####-*.md and incrementing the max value.
4. Set frontmatter id to DOC-#### and generate ####-<kebab-title>.md using templates/doc-template.md.
5. Update docs/README.md to include a link to the new document.
6. Run python3 scripts/validate_docs.py and fix issues before finishing.