Examine source code of ArtStation Discover fork

{
  "manifest_version": 3,
  "name": "Artstation Discover",
  "icons": {
    "48": "/assets/img/icon.png"
  },
  "description": "Curated images from Artstation in your new tabs.",
  "version": "1.4",
  "action": {
    "default_icon": "/assets/img/icon.png",
    "default_title": "Go to Artstation"
  },
  "permissions": [
    "cookies"
  ],
  "host_permissions": [
    "https://www.artstation.com/*",
    "https://fonts.googleapis.com/*"
  ],
  "chrome_url_overrides": {
    "newtab": "artstation.html"
  },
  "background": {
    "scripts": [
      "/assets/js/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "artstation-discover@extension",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}