soon to be ex supervisor:

I think it might be a better idea for you to continue to see if our team and the company are trying to get better, and then decide whether to leave or not

neither team nor company have changed at all after a year and 3 months

the promise is empty, and it triggers me quite a bit that he expresses it as a recommendation

not to mention that he apparently has not been told by the department leader that I have already signed another contract...

honestly, if they were so happy with me, they should have shown it before I went out there to get something else

Employee retention is not space engineering

If the employee feels valued and sees a future in the company, they will stay

If they dont, they will leave

its really simple