Examine source code of Claude Usage Indicator

{
  "manifest_version" : 3 ,
  "name" : "Claude Usage",
  "short_name" : "Claude Usage",
  "version" : "0.2.2",
  "description" : "Shows your Claude current-session and weekly usage in a compact Firefox popup.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4d26d496-58be-4b8e-a5e2-f28f972e8260}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "permissions" : [
    "storage" ,
    "alarms" 
  ],
  "host_permissions" : [
    "https://claude.ai/api/organizations" ,
    "https://claude.ai/api/organizations/*/usage" 
  ],
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "action" : {
    "default_title" : "Claude Usage",
    "default_popup" : "popup.html",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "32" : "icons/icon32.png",
      "48" : "icons/icon48.png",
      "96" : "icons/icon96.png"
    }
  },
  "icons" : {
    "16" : "icons/icon16.png",
    "32" : "icons/icon32.png",
    "48" : "icons/icon48.png",
    "96" : "icons/icon96.png"
  }
}