{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Instrument Footer",
  "description": "Hairline-rule footer with callsign, optional signup, and link list.",
  "type": "object",
  "properties": {
    "showSignup": {
      "type": "boolean",
      "title": "Show Signup",
      "description": "Render the inline email signup form.",
      "default": false,
      "x-editor": "select"
    },
    "callsign": {
      "type": "string",
      "title": "Callsign",
      "description": "Short mono identifier displayed at the corner of the footer rail.",
      "x-editor": "text"
    },
    "links": {
      "type": "array",
      "title": "Links",
      "description": "Footer link list (each item is text + url).",
      "default": [],
      "x-editor": "collection",
      "items": {
        "type": "object",
        "properties": {
          "text": {
            "type": "string",
            "title": "Link Text",
            "description": "Visible link text.",
            "x-editor": "text"
          },
          "url": {
            "type": "string",
            "title": "URL",
            "description": "Destination URL.",
            "x-editor": "text"
          }
        },
        "required": ["text"]
      }
    }
  }
}