Examine source code of Canvas Teacher Toolkit

{
  "manifest_version": 3,
  "name": "Canvas Teacher Toolkit",
  "version": "1.20.2",
  "description": "Dark mode plus grading, page-design, badge, due-date, and 504/IEP accommodation tools built into your Canvas teaching workflow.",
  "permissions": [
    "storage",
    "scripting",
    "alarms",
    "notifications"
  ],
  "host_permissions": [
    "*://*.instructure.com/*",
    "https://api.lemonsqueezy.com/*"
  ],
  "action": {
    "default_title": "Canvas Teacher Toolkit",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.instructure.com/*"
      ],
      "css": [
        "src/darkmode.css",
        "src/toolbar.css"
      ],
      "js": [
        "src/badges.js",
        "src/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "src/injected.js",
        "options.html",
        "options.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "optional_host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "canvas-teacher-toolkit@gamerdevguild",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  }
}