Créer une nouvelle compétence Claude Code

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description: Author a new skill under .claude/skills/<name>/SKILL.md with valid frontmatter, following the template conventions, and index it in CLAUDE.md + README.md. argument-hint: "<skill_name> [one-line description]" allowed-tools: ["Bash", "Read", "Write", "Edit"]

Add a new skill to this .claude/ config.

Argument handling ($ARGUMENTS):

1. <skill_name> — snake_case or kebab-case (required); becomes the directory name and the frontmatter name.
2. [description] — one-line, trigger-oriented summary. If missing, ask.

If anything is unclear (does it pair with a command/agent? which rules?), ask before writing.

Process:

1. Read the extending_claude_config skill (conventions + templates).
2. Verify skills/<skill_name>/ does not already exist.
3. Create skills/<skill_name>/SKILL.md with:
   • YAML frontmatter name: + description: (the description must say what it does and when to trigger).
   • a body: intro + pointers to the relevant rules/ and any reference repo under ~/nav2_ws/src/, a "first decision" section if it has variants, step-by-step instructions, and a "Common pitfalls" list.
   • tone/sections matching a sibling skill (e.g. ros2_controller_creation).
4. Index it:
   • add a row to the Skills index in .claude/CLAUDE.md (correct subsection).
   • if it is a reference-type skill, also consider a "Where things live" row.
5. If it is a scaffolding skill, offer to also create the matching /new-* command (/new-command) and, if it warrants review, a reviewer agent (/new-agent).
6. Print: file created + the index rows added.

Frontmatter is mandatory — a skill without name/description is not discoverable. Always update the index in the same change.