Examine source code of Claude RTL

{
  "manifest_version": 2,
  "name": "Claude RTL",
  "version": "1.2.1",
  "description": "Add RTL support and Persian font to Claude Chats",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "*://claude.ai/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://claude.ai/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "claude-rtl@example.com",
      "strict_min_version": "58.0"
    }
  }
}