Examine source code of XO Downloader Integration

{
  "manifest_version": 3,
  "name": "XO Downloader Integration Module",
  "version": "1.2.0",
  "author": "LeaF <lord.grim.sh@gmail.com>",
  "description": "Seamless high-speed download interception and browser integration for XO Downloader Desktop App.",
  "permissions": [
    "downloads",
    "cookies",
    "contextMenus",
    "storage",
    "activeTab",
    "notifications"
  ],
  "host_permissions": [
    "http://127.0.0.1:23859/*",
    "http://localhost:23859/*",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "xo-downloader@leaf.org",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "XO Downloader",
    "default_icon": {
      "32": "icons/icon32.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "32": "icons/icon32.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}