Examine source code of BetterSuno

{
  "manifest_version": 3,
  "name": "BetterSuno",
  "version": "2.4.2",
  "description": "Enhanced Suno.com experience with notifications and song downloads",
  "browser_specific_settings": {
    "gecko": {
      "id": "bettersuno@bettersuno.ext",
      "strict_min_version": "142.0"
    },
    "gecko_android": {
      "strict_min_version": "113.0"
    }
  },
  "permissions": [
    "cookies",
    "alarms",
    "scripting",
    "tabs",
    "notifications",
    "downloads"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src 'self' https://suno.com https://*.suno.com https://*.suno.ai https://*.cloudfront.net https://studio-api.prod.suno.com ws://localhost:9423 ws://127.0.0.1:9423"
  },
  "host_permissions": [
    "https://suno.com/*",
    "https://*.suno.com/*",
    "https://*.suno.ai/*",
    "https://*.cloudfront.net/*",
    "https://studio-api.prod.suno.com/*",
    "http://localhost/*",
    "ws://localhost/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "BetterSuno",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://suno.com/*"
      ],
      "js": [
        "content.js",
        "content-idb.js",
        "downloader.js",
        "create.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ]
}