Examine source code of LectureCapture Tube

{
  "manifest_version": 2,
  "name": "LectureCapture Tube",
  "version": "1.2",
  "description": "Capture, save, and manage YouTube video screenshots with timestamps.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "https://www.youtube.com/*",
    "https://script.google.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "sidebar.html",
    "sidebar.js",
    "jspdf.umd.min.js"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon48.png",
      "48": "icons/icon48.png",
      "128": "icons/icon48.png"
    },
    "default_title": "YouTube Screenshot",
    "default_popup": "sidebar.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1a94bb5-ea5d-406e-bea7-153d333e78dd}"
    }
  }
}