Examine source code of AP® Score Hider

{
  "manifest_version": 3,
  "name": "AP® Score Hider",
  "version": "1.0.0",
  "description": "Hides AP® Exam scores on the College Board website until clicked on, plays sounds, & displays confetti if they're passing.",
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://apstudents.collegeboard.org/view-scores*"
      ],
      "js": [
        "vendor/browser-polyfill.min.js",
        "confetti.js",
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png",
    "512": "icons/512.png"
  },
  "action": {},
  "options_ui": {
    "page": "options/index.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "apscorehider@tejasraman.me"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "iframe/*"
      ],
      "matches": [
        "https://apstudents.collegeboard.org/*"
      ]
    }
  ]
}