Examine source code of Comment Extractor

{
  "manifest_version": 2,
  "name": "Comment Extractor",
  "version": "1.0",
  "description": "Sidebar tool that extracts HTML comments from the current page's source code. All client-side, no data collection.",
  "browser_specific_settings": {
    "gecko": {
      "id": "comment_extractor@libor_benes.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "sidebar_action": {
    "default_title": "Comment Extractor",
    "default_panel": "sidebar.html"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "clipboardWrite",
    "<all_urls>"
  ]
}