How can an app request permission to use the fullscreen API

[AT]

The app.config.ts file currently allows a developer to state CSP rules that should be applied when running the app.
Is there a similar mechanism for certain Web APIs, like the Fullscreen API?

Use cases could be the expanded view of an image gallery, a video player or XR experience.

[imsingh · Accepted solution]

For security reasons, an app is not allowed to go full screen. This is to ensure that a user is always aware of what UI is part of the dock and what's part of the app.