Examine source code of Google Sheets Auto-Login

{
  "manifest_version": 3,
  "name": "Google Sheets Auto-Login",
  "version": "1.0.0",
  "description": "Auto-fills and logs in to websites using credentials from a Google Sheet via a secure API endpoint.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://script.google.com/*",
    "https://script.googleusercontent.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "action": {
    "default_icon": "icons/icon.svg",
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "16": "icons/icon.svg",
    "48": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sheets-autologin@antigravity.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}