Examine source code of Nano Trade Assistant

{
  "manifest_version": 3,
  "name": "Nano Trade Assistant",
  "version": "2.0",
  "description": "Automatización inteligente de tradeos para TF2. Detecta precios reales y protege contra estafas.",
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://backpack.tf/*",
        "*://steamcommunity.com/tradeoffer/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "injected.js",
        "icon48.png",
        "icon128.png"
      ],
      "matches": [
        "*://steamcommunity.com/*"
      ]
    }
  ],
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "nano-trade-assistant@nanobanana.com",
      "strict_min_version": "109.0"
    }
  }
}