Interactively scaffold new agent skills with correct frontmatter, trigger clauses, sub-files, and linter compliance. TRIGGER when: user asks to create a new skill, scaffold a skill, add a skill to agent-skills, or says "new skill" or "skill creator". DO NOT TRIGGER when: user is editing an existing skill, writing AGENTS.md or CLAUDE.md instructions, or building an MCP server (use mcp-server-builder skill).
