Examine source code of CatCat - default search engine

{
  "name": "CatCat - default search engine",
  "short_name": "CatCat",
  "description": "CatCat feeds shelter cats with every search - for free!",
  "homepage_url": "https://www.catcat.org",
  "chrome_settings_overrides": {
    "search_provider": {
      "encoding": "UTF-8",
      "favicon_url": "favicon.ico",
      "is_default": true,
      "keyword": "catcat",
      "name": "CatCat",
      "search_url": "https://www.catcat.org/search?q={searchTerms}&a=firefox&v=1.0.2",
      "suggest_url": "https://www.catcat.org/search/suggest?q={searchTerms}"
    }
  },
  "action": {
    "default_icon": {
      "16": "favicon-16.png",
      "32": "favicon-32.png",
      "48": "favicon-48.png",
      "96": "favicon-96.png",
      "128": "favicon-128.png"
    },
    "default_title": "CatCat"
  },
  "icons": {
    "16": "favicon-16.png",
    "32": "favicon-32.png",
    "48": "favicon-48.png",
    "96": "favicon-96.png",
    "128": "favicon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "catcat-default-search@goodshop.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "searchTerms"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.catcat.org/*"
      ],
      "js": [
        "js/content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "search"
  ],
  "manifest_version": 3,
  "version": "1.0.2"
}