{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://mda.sno.dev/spec/v1.0/schemas/relationship-footnote.schema.json",
  "title": "MDA relationship payload",
  "description": "Schema for the JSON payload of an MDA relationship footnote (`[^id]: { ... }`) and for entries in the `metadata.mda.relationships` mirror in compiled outputs.",
  "type": "object",
  "required": ["rel-type", "doc-id"],
  "properties": {
    "rel-type": {
      "type": "string",
      "enum": ["parent", "child", "related", "cites", "supports", "contradicts", "extends"],
      "description": "The kind of relationship to the target document."
    },
    "doc-id": {
      "type": "string",
      "description": "Target document's `doc-id`. UUID format recommended.",
      "minLength": 1
    },
    "rel-desc": {
      "type": "string",
      "description": "Human-readable description of the relationship."
    },
    "rel-strength": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Optional confidence/relevance score [0,1]."
    },
    "bi-directional": {
      "type": "boolean",
      "default": false,
      "description": "Whether the relationship implies a link back from the target."
    },
    "context": {
      "type": "object",
      "description": "Optional details about where/how this link applies.",
      "properties": {
        "section": { "type": "string" },
        "relevance": { "type": "string" }
      },
      "additionalProperties": true
    }
  },
  "additionalProperties": false
}