Examine source code of Claude Usage Bar

{
  "manifest_version": 2,
  "name": "Claude Usage Bar",
  "version": "1.0.0",
  "description": "Adds a compact usage indicator next to the model selector on Claude.ai, showing your current session and weekly usage limits at a glance. Click to expand the full breakdown.",
  "developer": {
    "name": "Apolonia"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "claude-usage-bar@apolonia",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://claude.ai/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "https://claude.ai/*"
  ]
}