Examine source code of Keep it Down Gemini

{
  "manifest_version": 3,
  "name": "Keep it Down Gemini",
  "version": "1.1",
  "description": "Stops Gemini from jumping to the top and reloading history when you resize the window or toggle fullscreen.",
  "icons": {
    "16": "KeepDown.png",
    "48": "KeepDown.png",
    "128": "KeepDown.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://gemini.google.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "keepitdowngemini@franseven.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}