Examine source code of Dynamic Email Alias

{
  "manifest_version": 3,
  "name": "Dynamic Email Alias",
  "version": "1.0",
  "description": "Instantly generate and autofill custom email aliases (e.g. twitter@yourdomain.com) to protect your privacy and organize your inbox.",
  "browser_specific_settings": {
    "gecko": {
      "id": "smartemail@vibecoded.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "contextMenus",
    "activeTab",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/styles.css"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}