Examine source code of Discount Check

{
  "manifest_version": 3,
  "name": "Discount Check",
  "version": "1.0.10",
  "description": "Ricorda sconti Corporate Benefits, punti Revolut e cashback Klarna mentre fai acquisti online.",
  "permissions": [
    "storage",
    "alarms",
    "scripting"
  ],
  "host_permissions": [
    "https://*.convenzioniaziendali.it/*",
    "https://sconti-api.andreapontillo.it/*",
    "https://www.klarna.com/*"
  ],
  "optional_host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/brands/*.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "dashboard.html",
    "default_title": "Discount Check",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "discount-check@andreapontillo.it",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}