Examine source code of Classroom Searcher

{
  "manifest_version": 3,
  "name": "Classroom Searcher For Google Classroom",
  "description": "Search classes you enrolled or teach in Google Classroom.",
  "version": "4.4",
  "permissions": [
    "storage"
  ],
  "action": {
    "default_popup": "popup/index.html"
  },
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "/browser-polyfill.js",
        "/scripts/content.js"
      ],
      "matches": [
        "https://classroom.google.com/*"
      ]
    }
  ],
  "icons": {
    "48": "/icons/gc-48.png",
    "96": "/icons/gc-96.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "scripts/search.html"
      ],
      "matches": [
        "https://classroom.google.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "classroom-searcher@wuttiphat.dev"
    }
  }
}