Hi @maxmaximax thanks for sharing your work!
[UPDATE] [SOLVED]: from the in-depth post on this subject:
So far, this is really close to being 100% in OH4.01 except for one minor irritance: the frame shows the full dashboard controls.
I made sure to copy the link only to the panel, but in my widget, it continually gives me the dashboard controls.
Any idea what I might be doing incorrectly?
Thanks again, great stuff!