Examine source code of AI Comment Checker

{
  "manifest_version": 3,
  "name": "AI Comment Checker",
  "version": "2.0",
  "description": "Highlights AI-generated comments and shows confidence score.",
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://comment-render.onrender.com/*",
    "*://*.youtube.com/*",
    "*://*.google.com/*",
    "*://*.google.co.in/*",
    "*://*.googleusercontent.com/*",
    "*://*.maps.google.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.google.com/search*",
        "*://*.google.com/maps*",
        "*://*.google.com/maps/reviews*",
        "*://*.googleusercontent.com/*",
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon-16.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "ai-checker-v2@rudraksh.addon",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  }
}