Examine source code of Portainer Error 500 Revealer

{
  "manifest_version": 3,
  "name": "Portainer Error 500 Revealer",
  "version": "1.0",
  "description": "Intercepts and displays 500 error reasons in Portainer.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "portainer500revealer@local.testing",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "action": {
    "default_popup": "options.html",
    "default_title": "Portainer Error 500 Revealer Settings",
    "default_icon": "icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "notification.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}