Examine source code of Berlin Kulturguide

{
  "manifest_version": 3,
  "name": "Berlin Kulturguide",
  "description": "MV3-Grundgerüst. Firefox-kompatibel. Keine Datenerhebung.",
  "version": "1.0.1",
  "action": {
    "default_title": "Berlin Kulturguide",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "berlin-kulturguide@remko-ajc",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'none'; base-uri 'none'; img-src 'self' data:;"
  }
}