Examine source code of AI Extension

{
  "manifest_version": 2,
  "name": "AI Extension",
  "version": "1.7",
  "description": "Addon de gestion avancée de AI Marketing",
  "icons": {
    "48": "icons/gestion-48.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/gestion-48.png",
    "browser_style": true,
    "default_popup": "popup/popup.html"
  }
}