It's not a realtime system kind of thing where the debugger would change the behavior too much... It's possible with enough engineering work, but nobody has put that work in, in fact they had a debugger for some staging envs that they deleted. Lately they keep adding more red tape making it hard to even run something locally, let alone attach a debugger.
I guess you can attach a debugger for unit tests, but that's not very useful.
It’s impossible? Or would take engineering work to enable