Examine source code of Fast Food Filter

{
  "manifest_version": 2,
  "name": "Fast Food Filter",
  "version": "2.0",
  "author": "Pottsalat",
  "description": "Lieferando-Plugin zum Filtern der Speisen nach Diät (vegan / vegetarisch), Allergenen, Zutaten und gesundheitlichen Faktoren.",
  "icons": {
    "128": "common/icon.png"
  },
  "web_accessible_resources": [
    "common/icon.png",
    "common/backgrounds/inter.png",
    "common/backgrounds/inter-vegan.png",
    "common/backgrounds/inter-vegetarian.png",
    "common/backgrounds/inter-pesce.png",
    "common/backgrounds/inter-omni.png",
    "common/diet/streamline-icon-seafood-fish@140x140.png",
    "common/diet/streamline-icon-animal-products-cheese@140x140.png",
    "common/diet/streamline-icon-vegetables-carrot@140x140.png",
    "common/assets/Lieferando-Startseite-Small-image.jpg",
    "common/assets/bowls.png",
    "common/assets/carrot.png",
    "common/assets/pottsalat.png",
    "common/assets/Montserrat-Bold.ttf"
  ],
  "permissions": [
    "https://*.lieferando.de/",
    "https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/",
    "https://pottsalat.de/fff/words.php/*",
    "storage"
  ],
  "page_action": {
    "default_title": "Fast Food Filter",
    "default_icon": "common/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*.lieferando.de/*",
        "https://*.lieferando.de/*"
      ],
      "js": [
        "common/jquery-3.6.0.min.js",
        "common/browser-polyfill.min.js",
        "landing.js",
        "diet.js",
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "ben@pottsalat.de",
      "strict_min_version": "42.0"
    }
  }
}