Examine source code of SMS Grades Overview

{
  "manifest_version": 3,
  "name": "SMS Grades & BAC Calculator",
  "version": "1.8.8",
  "description": "Grades overview widget and European Baccalaureate calculator for sms.eursc.eu dashboard (beta)",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://sms.eursc.eu/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "scares/*"
      ],
      "matches": [
        "https://sms.eursc.eu/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://sms.eursc.eu/content/common/dashboard.php*"
      ],
      "js": [
        "content.js",
        "bac.js"
      ],
      "css": [
        "content.css",
        "bac.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "sms-grades@kmiguel.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}