Implement "Skill Creation" Meta-Skill

Background

The AI Assistant relies on a strict Anthropic Progressive Disclosure pattern for skills (a lightweight SKILL.md router and a heavier payload in a /references folder). Future agents in new sessions will lack the immediate context of how to properly structure these folders and what YAML frontmatter to apply.

Goal

Create a "meta-skill" (a skill for creating skills) that acts as the authoritative template and instruction set for future agents when asked to create a new behavioral skill.

Implementation Steps

1. Create .agent/skills/create-skill/SKILL.md with the appropriate trigger.
2. Create .agent/skills/create-skill/references/skill-authoring-guide.md detailing:
   • The mandatory folder structure (.agent/skills/{skill-name}/).
   • The exact YAML frontmatter requirements (name, description, triggers) to prevent system prompt bloat.
   • Examples of routing to a heavier /references document.