{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/Kucell/cortex-agent/schemas/mission.schema.json",
  "title": "Cortex Agent Mission State",
  "description": "Mode-agnostic long-horizon task state. A mission groups multiple milestones with a shared validation contract. Pattern: see docs/architecture/mission-lite-design.md.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema_version",
    "mission_id",
    "title",
    "status",
    "milestones",
    "created_at",
    "updated_at"
  ],
  "properties": {
    "schema_version": { "const": 1 },
    "mission_id": {
      "type": "string",
      "pattern": "^M-[A-Za-z0-9][A-Za-z0-9._-]*$",
      "description": "Stable mission id, prefix M-."
    },
    "title": { "type": "string", "minLength": 1 },
    "description": { "type": "string" },
    "status": {
      "type": "string",
      "enum": ["draft", "active", "blocked", "completed", "canceled", "superseded"]
    },
    "current_milestone_id": {
      "type": ["string", "null"],
      "pattern": "^MS-[A-Za-z0-9][A-Za-z0-9._-]*$"
    },
    "milestones": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["milestone_id", "title", "status"],
        "properties": {
          "milestone_id": {
            "type": "string",
            "pattern": "^MS-[A-Za-z0-9][A-Za-z0-9._-]*$"
          },
          "title": { "type": "string", "minLength": 1 },
          "description": { "type": "string" },
          "status": {
            "type": "string",
            "enum": ["planned", "in_progress", "blocked", "passed", "failed", "waived"]
          },
          "owner": { "type": ["string", "null"] },
          "depends_on": {
            "type": "array",
            "uniqueItems": true,
            "items": { "type": "string", "pattern": "^MS-[A-Za-z0-9][A-Za-z0-9._-]*$" }
          },
          "validation_contract_ref": { "type": "string", "minLength": 1 },
          "milestone_ref": { "type": ["string", "null"] },
          "started_at": { "type": ["string", "null"], "format": "date-time" },
          "completed_at": { "type": ["string", "null"], "format": "date-time" }
        },
        "additionalProperties": false
      }
    },
    "validation_contract_ref": {
      "type": "string",
      "minLength": 1,
      "description": "Path to validation-contract.json (relative to .agent/missions/<mission_id>/)."
    },
    "command_log_ref": { "type": "string" },
    "owner": { "type": ["string", "null"] },
    "coordinator_session_id": { "type": ["string", "null"] },
    "created_at": { "type": "string", "format": "date-time" },
    "updated_at": { "type": "string", "format": "date-time" }
  }
}