Examine source code of Gemini to Webhook

{
  "manifest_version": 3,
  "name": "Gemini to Webhook",
  "version": "1.0.1",
  "description": "Geminiの回答にWebhook送信ボタンを追加します",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://gemini.google.com/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gemini-to-webhook@toyoshima.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_popup": "options.html"
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "https://gemini.google.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "web_accessible_resources": [
    {
      "matches": [
        "https://gemini.google.com/*"
      ],
      "resources": [
        "assets/client-Cs0stfMX.js",
        "assets/browser-polyfill-B1DveEM8.js",
        "assets/index.tsx-wFQwFBxw.js"
      ]
    }
  ]
}