Examine source code of Public Domain Audiobooks

{
  "manifest_version": 3,
  "name": "Public Domain Audiobooks",
  "version": "1.0.2",
  "description": "Free LibriVox audiobooks streamed from archive.org — 100 curated classics plus live genre browsing.",
  "browser_specific_settings": {
    "gecko": {
      "id": "public-domain-audiobooks@extension.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {}
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://archive.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Public Domain Audiobooks"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "author": "Toma Tudorel",
  "homepage_url": "https://tomatudorel.blogspot.com",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  }
}