{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://brainfile.md/v2/adr.json",
  "title": "Brainfile ADR Schema",
  "description": "Schema for Architecture Decision Record documents. Captures architectural decisions with lifecycle status and supersession tracking. Extends the task schema.",
  "allOf": [
    {
      "$ref": "https://brainfile.md/v2/task.json"
    },
    {
      "type": "object",
      "properties": {
        "type": {
          "const": "adr"
        },
        "status": {
          "type": "string",
          "description": "ADR lifecycle status.",
          "enum": ["proposed", "accepted", "deprecated", "superseded"]
        },
        "supersededBy": {
          "type": "string",
          "description": "ID of the ADR that supersedes this one. Only relevant when status is 'superseded'.",
          "minLength": 1,
          "examples": ["adr-5"]
        }
      }
    }
  ]
}