Examine source code of Artemis Link Graph

{
  "name": "Artemis Link Graph",
  "description": "See when a site you follow has linked to the page you are viewing.",
  "version": "1.0.3",
  "manifest_version": 3,
  "action": {
    "default_popup": "index.html",
    "default_icon": "mascot.png"
  },
  "browser_action": {},
  "permissions": [
    "tabs",
    "storage",
    "action",
    "scripting",
    "activeTab"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "https://artemis.jamesg.blog/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "app.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "artemis-link-graph@artemis"
    }
  }
}