Examine source code of Insta Video Bar

{
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "insta-videobar@claude-extensions",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "name": "Insta Video Bar",
  "version": "1.0.0",
  "description": "Instagram videolarında ilerleme çubuğu — durunca gözükür",
  "icons": {
    "48": "icons/icon.svg"
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "js": [
        "content/videobar.js"
      ],
      "css": [
        "content/videobar.css"
      ],
      "run_at": "document_idle"
    }
  ]
}