Examine source code of Phoenix Blocker

{
  "manifest_version": 3,
  "name": "Phoenix Blocker",
  "description": "Browser extension add-on for the Phoenix desktop application. Users should only install this extension if they own Phoenix.",
  "version": "1.0.0",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "action": {
    "default_icon": "images/icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "phoenix.blocker@phoenix.org",
      "strict_min_version": "115.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.*",
        "fonts/*.woff",
        "scripts/*.*",
        "df_youtube/scripts/*.*",
        "df_youtube/css/*.*",
        "*.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/phoenix.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "df_youtube/scripts/df_youtube.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "nativeMessaging",
    "webNavigation",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "file://*/*"
  ]
}