I had a domestic violence charge that got dismissed in pre-trial.

Soon after the incident occurred my attorney asked me to get 4-5 anger management classes as that would increase the chances of my case getting dismissed but said the court never asked/mandated the classes.

And he also said the prosecutor elected to dismiss the case due to lack of evidence and because he was satisfied that I completed anger management counseling sessions.

I've a few questions around this:

1) When I apply for I-485, will this situation be treated as Conviction by Immig Officer thouse the case was dismissed in pre-trial?

2) Can I be deported for this when I file for I-485? Am I risking by applying for I-485?

3) The court did not give a separate disposition letter (disposition is in the Criminal Complaint itself). We drafted a letter explaining the charges against me and the outcome of the case and took stamp, seal along with Clerk's signature from the court.

When I file my 485 will this letter be enough as a proof to the Immig Officer that my case was dismissed?
Or do I need to submit the entire docket?

I had applied for the compelling circumstances EAD as i140 beneficiary when I lost my H1 job past July from info. thru these calls and our discussion. I found a new H1 job eventually in the grace period that H1 got approved later in Dec 2020.

Now after long wait, USCIS sent me biometrics appt. letter to go to ASC for fingerprints for this EAD. My question-

1. Since it appears USCIS wants to proceed with this compelling EAD despite the fact they have approved H1 in Dec. itself, should I go for biometrics to get this EAD?
2. If yes, is it fine to work elsewhere using that EAD(may be part time) while maintaining my H1 status thru current H1 job, or I got to pick one of the two? leaving my current H1 job will make me ineligible for i485 filing (in case my priority date may become current in another year) as that EAD is no H1 status right?
3. Or should I not go for this EAD/biometrics at this point at all? do I need to inform USCIS anything?