Examine source code of TuneShelf

{
  "manifest_version": 2,
  "name": "TuneShelf",
  "version": "1.0",
  "description": "A lo-fi inspired extension to create and manage music playlists with YouTube/SoundCloud URLs, featuring a beige-orange interface with cassette animations.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f175c92d-e60f-44ad-ae2c-e48898b1bed1}"
    }
  }
}