Examine source code of NYSE Top 50 Trades

{
  "manifest_version": 2,
  "name": "NYSE Top 50 Trades",
  "version": "1.0",
  "description": "Live NYSE top 50 stocks by trading volume with price, change, and direction. Auto-refreshes every 60 seconds via Yahoo Finance. All data fetched client-side. No personal data collected.",
  "browser_specific_settings": {
    "gecko": {
      "id": "nyse_top_50_trades@libor_benes.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "sidebar_action": {
    "default_title": "NYSE Top 50 Trades",
    "default_panel": "sidebar.html"
  },
  "permissions": [
    "https://query1.finance.yahoo.com/*",
    "https://query2.finance.yahoo.com/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';"
}