The hostility is an effort to get you to quit rather than having to terminate you.
I hate it when employers do this. Sadly I was part of this tactic once upon a time before I realized what they were doing.
I don't know how it is in other states, but in my state if you quit, you can't get unemployment benefits. If they lay you off or terminate you, you can apply for them and the employer either pays for it or needs to go through the hassle of justifying why they won't pay unemployment which you can then go in and present your case as to why you should receive benefits.
My wife was once employed by a company that finally gave up on getting her to leave and fired her on made up reasons. They then denied her unemployment benefits. We were going to fight it, but she found a new job so we didn't have to.
Keep those records, as much as you can and take them off site at the end of the day so they won't find it. If they fire you and deny unemployment, you'll have proof you did nothing wrong and they'll have to pay, which will make them even more happy with you.