Examine source code of Torn Trade Calculator

{
  "manifest_version": 2,
  "name": "Trade Value Calculator",
  "version": "1.3",
  "description": "Calculates the total value of items in a trade on Torn.com.",
  "permissions": [
    "activeTab",
    "https://dd107b3e-5d58-46ac-a01c-c6396e6ae89c-00-jnemhkuhto6l.janeway.replit.dev/",
    "https://weav3r.lol/"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.torn.com/trade.php*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "new-trade-calculator@example.com"
    }
  }
}