Examine source code of LinkedIn Learning Time Tracker

{
  "manifest_version": 3,
  "name": "LinkedIn Learning Time Tracker",
  "version": "1.0.0",
  "description": "Track how much time you spend watching LinkedIn Learning videos — daily, weekly, and monthly.",
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-learning-tracker@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "websiteActivity"
        ]
      }
    },
    "safari": {
      "strict_min_version": "15.4",
      "development_team_id": "${DEVELOPMENT_TEAM_ID}"
    }
  },
  "background": {
    "service_worker": "background/background.js",
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.linkedin.com/learning/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "shared/utils.js",
        "shared/storage.js",
        "content-scripts/video-tracker.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "*://www.linkedin.com/*"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "LinkedIn Learning Tracker",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}