Examine source code of Claude Tracker

{
  "manifest_version": 2,
  "name": "Claude Tracker",
  "version": "5.1.0",
  "description": "Track your Claude.ai context window, usage limits, and messages — 100% local.",
  "permissions": [
    "storage",
    "tabs",
    "https://claude.ai/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icon32.png",
      "64": "icon64.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://claude.ai/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "32": "icon32.png",
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "claude-tracker@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}