Examine source code of Star Scrolls Generator

{
  "manifest_version": 3,
  "name": "Star Scrolls Generator",
  "version": "1.0",
  "description": "Generate epic space saga opening crawls for your own adventures",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Star Scrolls Generator",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "music.mp3",
        "stars.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; media-src 'self'; img-src 'self' data:;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@starwarsintrocreator.com",
      "strict_min_version": "109.0"
    }
  }
}