# description
Frontmatter shape for nodes classified as `agent`. Extends `base.schema.json`. Kind-specific fields: `model`, `tools`. Color, when needed, lives in `metadata.color` (inherited from base).

# properties.model.description
Model identifier for this agent (e.g. `sonnet`, `opus`, `haiku`, or a full `claude-*` id). Free-form string; adapters MAY validate against a platform-specific enum.

# properties.tools.description
Tools available to this agent. Tokens are platform-specific.