Examine source code of Quick UTM Builder

{
  "manifest_version": 3,
  "name": "Quick UTM Builder",
  "description": "Tạo & copy URL kèm UTM cho tab hiện tại — preset Facebook/TikTok/Google/Shopee.",
  "version": "1.0.0",
  "action": {
    "default_title": "Quick UTM Builder",
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "scripting",
    "storage",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2af9df2e-4a6a-4a1b-9b78-4b6b0b3f7b77}",
      "strict_min_version": "109.0"
    }
  }
}