Examine source code of Claude Auto Sender

{
  "manifest_version": 2,
  "name": "Claude Auto Sender",
  "version": "3.1.7",
  "description": "Envía automáticamente mensajes en Claude. VERSIÓN LIMPIA Y FUNCIONAL.",
  "permissions": [
    "tabs",
    "notifications",
    "storage",
    "https://claude.ai/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://claude.ai/chat/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{10e054ec-2a41-4d04-ada0-36563ea720a0}"
    }
  }
}