I'm so glad ya'll think like I do. We have been documenting for over a year and the police are very aware. We have a stalking order in place.
This sounds like a really taxing, upsetting situation and I'm sorry it's happening to you.
I would also preemptive talk to your other neighbors to get them on your side. Bringing some lovely free eggs usually helps!
I agree with this. I think it's likely that most of the neighbors know that this guy is a bit off, but I think that explaining that your rooster is being intentionally provoked and acknowledging that they might be annoyed is a good strategy. Even though I live in a rural area with no rooster restrictions, I still walked around to all of my neighbors to tell them I have roosters and let them know that if they were ever being disturbed, please let me know. I think that the courtesy means a lot to people.
I know it is annoying but if someone was harrasing my chickens I would bring them in my house overnight so your neighbour can shine a light at an empty coop and will end up making a lot more noise trying to get air crow
if you have a dog crate or something similar (or even your bathroom if you don't mind the poo) you could put them in their overnight
I would be more tempted to do this than revamping the coop/run.
Like many others, I find this situation very alarming. I think that modifying the coop feeds into this guy's idea that you are "at war". Even though you are defending your chickens, this man might see it as an escalation. I agree with many posters here that this sounds like a serious mental health issue and unhinged behavior. I realize that these choices might not apply to your situation, but in case they do:
1) You already have your anti-stalking order and court procedures happening. I wonder if your community has any mediation or mental health organizations who might be willing to reach out to this person.
2) It sounds like you are already documenting his behavior. I agree with people who say to consider taking photos or video. You are well within your rights to have a camera pointed out from your house to capture his behavior.
3) I don't know the exact dynamics of your situation and how much your neighborhood sees this guy as a threat. But if there is a neighbor who could act as an ally to you, perhaps they would be willing to speak to him. It might help if it's someone from his demographic (like if he's a white guy in his 60s, finding another white guy in his 60s, if he's an army vet, someone else who's an army vet, etc).
TLDR: I would not go to trouble/expense combating this man's behavior. I would focus instead on documentation and de-escalation, as well as reaching out to neighbors to make them aware of the situation. Honestly, it doesn't sound like this man would think "Oh, the light isn't working anymore. Guess I'll give up!". Seems more like a person who would then escalate to something different and possibly worse.