Examine source code of Smart Contact Extension

{
  "manifest_version": 3,
  "name": "Smart Contact Extension",
  "version": "1.0.6",
  "description": "Extract contact information from LinkedIn and Indeed profiles",
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; connect-src 'self' https://*.googleapis.com https://*.firebaseapp.com https://*.firebaseio.com https://*.google.com https://smartcontacttool-w43pnffnbq-uc.a.run.app https://socket-server-257559984572.us-central1.run.app wss://socket-server-257559984572.us-central1.run.app https://api.ipify.org https://ipapi.co https://api.ipgeolocation.io https://api.opencagedata.com;"
  },
  "permissions": [
    "storage",
    "activeTab",
    "identity"
  ],
  "host_permissions": [
    "https://*.linkedin.com/*",
    "https://*.indeed.com/*",
    "https://*.doximity.com/*",
    "https://*.googleapis.com/*",
    "https://*.firebaseapp.com/*",
    "https://*.firebaseio.com/*",
    "https://smartcontacttool-w43pnffnbq-uc.a.run.app/*",
    "https://socket-server-257559984572.us-central1.run.app/*",
    "wss://socket-server-257559984572.us-central1.run.app/*",
    "https://api.ipify.org/*",
    "https://ipapi.co/*",
    "https://api.ipgeolocation.io/*",
    "https://api.opencagedata.com/*"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "sidebar_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Smart Contact Extension",
    "default_panel": "popup.html",
    "open_at_install": false
  },
  "options_page": "options.html",
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.linkedin.com/*",
        "https://*.indeed.com/*",
        "https://*.doximity.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "smart-contact-tool@cynetcorp.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}