Examine source code of Smart Expense Tracker

{
  "manifest_version": 2,
  "name": "Smart Expense Tracker",
  "version": "1.0.0",
  "description": "Track your daily expenses with categories, budgets, and detailed financial statistics.",
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Smart Expense Tracker",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d6e8c16-179f-4e2c-87fd-5cd400fafe77}"
    }
  }
}