{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Cortex Progress Lock",
  "type": "object",
  "required": ["scope", "held_by", "acquired_at", "expires_at", "ttl_seconds"],
  "properties": {
    "scope": { "type": "string", "minLength": 1 },
    "held_by": { "type": "string", "minLength": 1 },
    "task_id": { "type": ["string", "null"] },
    "mission_id": { "type": ["string", "null"] },
    "acquired_at": { "type": "string", "format": "date-time" },
    "renewed_at": { "type": ["string", "null"], "format": "date-time" },
    "expires_at": { "type": "string", "format": "date-time" },
    "ttl_seconds": { "type": "integer", "minimum": 1 },
    "metadata": { "type": "object" }
  },
  "additionalProperties": false
}