Examine source code of RTL in Web

{
  "manifest_version": 2,
  "name": "RTL in Web",
  "version": "1.3",
  "description": "Force ChatGPT and DeepSeek interfaces to Persian (fa-IR) with right-to-left layout.",
  "homepage_url": "https://github.com/jalalbagheri95/rtl-in-web",
  "icons": {
    "48": "icons/icon.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@rtl-in-web",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*",
        "*://deepseek.com/*",
        "*://chat.deepseek.com/*"
      ],
      "js": [
        "rtl-script.js"
      ],
      "css": [
        "rtl-style.css"
      ],
      "run_at": "document_start"
    }
  ]
}