My iOS app and its extension successfully share files locally through an app-group container. The app also exposes files in the Documents folder of its app container to the Files app, after setting UISupportsDocumentBrowser in the app's info.plist.
How can I expose files stored in the app-group's container to the Files app?
The extension (a widget) generates files in the app-group container and shares them with the app this way. Currently the app copies changed files from the app-group container to the app container's Documents folder to expose them to the Files app. This entails a delay, as the app can copy only when it is running, in the fore- or background.