{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://git.eeqj.de/sneak/chat/schema/s2c/system.json",
  "title": "S2C System",
  "description": "Server system message (MOTD, maintenance notices, etc.).",
  "type": "object",
  "properties": {
    "id": {
      "type": "integer"
    },
    "type": {
      "const": "system"
    },
    "ts": {
      "type": "string",
      "format": "date-time"
    },
    "content": {
      "type": "string",
      "description": "System message text."
    },
    "code": {
      "type": "string",
      "description": "Optional machine-readable system message code.",
      "examples": ["motd", "maintenance", "server_restart"]
    }
  },
  "required": ["id", "type", "ts", "content"]
}