Agent templates: folder-only templates under templates/ (context/instructions.md +
optional context extras, .mcp.json, skills/). Stamping via ncl groups create
--template writes the provider-neutral instructions.prepend.md (inlined at the top
of CLAUDE.md/AGENTS.md every spawn), copies context extras preserving their
template-relative layout, writes MCP servers to container config, and installs the
per-group skills overlay. Includes docs (docs/templates.md, templates/README.md).
Setup-wizard wiring ships separately on top of this.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>