Examine source code of Gmail Threat Analyzer

{
  "manifest_version": 3,
  "name": "Gmail Threat Analyzer",
  "version": "1.0",
  "description": "Analyzes Gmail emails for threats using VirusTotal.",
  "browser_specific_settings": {
    "gecko": {
      "id": "gmail-threat-analyzer@virustotal.extension",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "https://www.virustotal.com/*",
    "https://use.fontawesome.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}