Examine source code of Mountain Fog Slug

{
  "manifest_version": 3,
  "name": "Mountain Fog",
  "version": "1.0.0",
  "description": "A quiet decorative popup featuring misty mountain ridges, gentle fog drift, and a serene ambient landscape.",
  "action": {
    "default_popup": "popup.html",
    "default_title": "Mountain Fog"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "mountainfog@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}