Feature Request: Implement _repr_mimebundle_ as an external hook

[dmadisetti]

I got textual trivially working in a marimo notebook: marimo-team/marimo#4959
but only when run via python textual_app.py

I see there's an html representation of textual app? Is there anyway to hook in and render these? It would be pretty cool if these apps rendered in notebooks too (marimo even supports wasm).

AnyWidget follows this the _repr_mimebundle_ spec which enables it to work in marimo + jupyter, with no further explicit lift by the maintainer. Is there any standard hook you would consider exposing?

Feel free to close this a won't fix- just opening because I think it'd be something cool- and would be happy to tinker around on the marimo side to get apps working if you implemented a standard like _repr_mimbebundle_

[willmcgugan]

David Brochart has had some success embedding Textual apps in Jupyter notebooks. It will be possible with the same tech as textual-serve. But I suspect not as simple as implementing a _repr_mimebundle_.

[davidbrochart]

I don't know if it's still functional: https://github.com/davidbrochart/ipytextual.