Examine source code of Custom Dashboard

{
  "manifest_version": 3,
  "name": "Custom Dashboard",
  "version": "1.0",
  "description": "Local home screen with shortcuts and widgets.",
  "browser_specific_settings": {
    "gecko": {
      "id": "flashboard@ingearts.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "bookmarks",
    "history"
  ],
  "host_permissions": [
    "https://api.unsplash.com/*",
    "https://images.unsplash.com/*",
    "https://api.openweathermap.org/*"
  ],
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "action": {
    "default_popup": "index.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  }
}