Examine source code of Robots Radar

{
  "manifest_version": 2,
  "name": "Robots.TXT Radar",
  "version": "4.6.3",
  "description": "Live robots.txt analyser — animated address-bar icon plus per-cluster status for 120+ AI, search and commercial bots.",
  "author": "Robots.TXT Radar",
  "homepage_url": "https://dhemant.consulting/tools/robots-radar-browser-extension/",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "page_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_popup": "popup.html",
    "default_title": "Robots.TXT Radar"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "permissions": [
    "activeTab",
    "tabs",
    "webNavigation",
    "<all_urls>"
  ],
  "incognito": "spanning",
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "robots-radar@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}