A quick update from my thread about a week ago about the police complaint of "harassment" made against me by my neighbour's unwell DC. I deleted the original thread for safety reasons.
Police have confirmed that there is no case against me and they are doing no further investigation. Also that the neighbours confirmed no fault on my part. Although they clearly concluded it was a MH issue on the DC's part, they judged him no risk of violence. He is now in another property several hundred miles away and expected to stay there.
DH and I have sorted things out. The situation triggered complex issues for us both in different ways.
We've improved our security a bit and I'm going to stay dark on social media for a bit (and abandon this username).
Thanks to those who gave me advice.