Examine source code of RTL Toggle for Deepseek

{
  "manifest_version": 2,
  "name": "RTL Toggle for Deepseek",
  "version": "1.0",
  "description": "Toggle text direction between RTL and LTR on chat.deepseek.com.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://chat.deepseek.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://chat.deepseek.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{364c1c30-d5d4-4f19-a009-a42789d404b3}"
    }
  }
}