Examine source code of CheatScrub GPT Detector

{
  "name": "CheatScrub GPT Detector",
  "description": "CheatScrub is a GPT/AI generated content detector. Harness the power of AI against cheating with AI!",
  "version": "1.1.1",
  "manifest_version": 2,
  "permissions": [
    "*://canvas.instructure.com/courses/*/gradebook/speed_grader*",
    "contextMenus",
    "activeTab",
    "scripting",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "logo-16.png",
    "32": "logo-32.png",
    "48": "logo-48.png",
    "128": "logo-128.png"
  },
  "browser_action": {
    "default_icon": "logo.png",
    "default_popup": "popup.html",
    "default_title": "CheatScrub"
  },
  "content_scripts": [
    {
      "matches": [
        "*://canvas.instructure.com/courses/*/gradebook/speed_grader*"
      ],
      "js": [
        "inject.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ebfa2175-661c-4c31-8383-3c847e76cbab}"
    }
  }
}