{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://persona-atoms.com/schemas/composition-group-v1.json",
  "title": "persona-atoms v1 multi-persona composition",
  "description": "Defines a higher-order composition such as a review panel, delivery pod, or team. A group composition coordinates multiple personas or nested compositions into a reusable operating unit.",
  "type": "object",
  "required": [
    "schema",
    "type",
    "id",
    "version",
    "name",
    "members",
    "workflow",
    "done_criteria"
  ],
  "additionalProperties": false,
  "properties": {
    "schema": {
      "type": "string",
      "const": "https://persona-atoms.com/schemas/composition-group-v1.json"
    },
    "type": {
      "type": "string",
      "enum": ["panel", "pod", "team"]
    },
    "id": {
      "type": "string",
      "pattern": "^[a-z0-9][a-z0-9-]{1,62}[a-z0-9]$"
    },
    "version": {
      "type": "string",
      "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+(?:-[A-Za-z0-9.-]+)?$"
    },
    "name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 80
    },
    "description": {
      "type": "string",
      "maxLength": 500
    },
    "members": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["ref", "responsibility", "cardinality"],
        "additionalProperties": false,
        "properties": {
          "ref": {
            "type": "string",
            "pattern": "^persona-atoms://(personas|compositions)/[a-z0-9-]+$"
          },
          "responsibility": {
            "type": "string",
            "minLength": 1,
            "maxLength": 160
          },
          "cardinality": {
            "type": "string",
            "enum": ["1", "0..1", "1..N", "0..N"]
          },
          "required": {
            "type": "boolean",
            "default": true
          }
        }
      }
    },
    "entry_conditions": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 160 },
      "uniqueItems": true
    },
    "workflow": {
      "type": "array",
      "minItems": 1,
      "items": { "type": "string", "minLength": 1, "maxLength": 200 }
    },
    "handoff_rules": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 200 }
    },
    "moderation_rule": {
      "type": "string",
      "maxLength": 500
    },
    "output_artifacts": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 120 },
      "uniqueItems": true
    },
    "rework_routing": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 160 }
    },
    "done_criteria": {
      "type": "array",
      "minItems": 1,
      "items": { "type": "string", "minLength": 1, "maxLength": 160 }
    },
    "tags": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 40 },
      "uniqueItems": true
    },
    "vendors": {
      "type": "array",
      "items": { "type": "string", "enum": ["claude", "gpt", "llama", "gemini", "mistral", "any"] },
      "uniqueItems": true
    },
    "lifecycle": {
      "type": "string",
      "enum": ["draft", "stable", "deprecated", "archived"],
      "default": "draft"
    },
    "license": {
      "type": "string",
      "default": "Apache-2.0"
    },
    "provenance": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "source": { "type": "string" },
        "addedBy": { "type": "string" },
        "addedAt": { "type": "string", "format": "date-time" }
      }
    }
  }
}