Examine source code of Skedge

{
  "icons": {
    "16": "icon16.plasmo.2577fc03.png",
    "32": "icon32.plasmo.d583dc1e.png",
    "48": "icon48.plasmo.e0fcfb1d.png",
    "64": "icon64.plasmo.e6259081.png",
    "128": "icon128.plasmo.96a1ede9.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.2577fc03.png",
      "32": "icon32.plasmo.d583dc1e.png",
      "48": "icon48.plasmo.e0fcfb1d.png",
      "64": "icon64.plasmo.e6259081.png",
      "128": "icon128.plasmo.96a1ede9.png"
    },
    "default_popup": "popup.html"
  },
  "version": "2.2.4",
  "author": "Nebula Labs",
  "name": "Skedge",
  "description": "your registration assistant by students, for students",
  "background": {
    "scripts": [
      "static/background/index.js"
    ]
  },
  "permissions": [
    "storage",
    "scripting",
    "webNavigation",
    "tabs",
    "nativeMessaging"
  ],
  "host_permissions": [
    "https://utdallas.collegescheduler.com/*",
    "https://www.ratemyprofessors.com/*",
    "https://trends.utdnebula.com/*",
    "https://*.sentry.io/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "skedge@utdnebula",
      "strict_min_version": "109.0"
    }
  }
}