Examine source code of Easy Claude Usage Meter

{
  "manifest_version": 3,
  "name": "Claude Usage",
  "version": "1.1.0",
  "description": "See your Claude.ai 5-hour and weekly usage limits in one click.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Claude Usage"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "webRequest",
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://claude.ai/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "claude-usage-popup@local.ext",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}