Well, it can be self-hosted

It is probably Chinese junk, but I’m using a set of cudy m3000 WiFi6 mesh devices that run openwrt. Could be worth looking into. They are about as cheap as I’ve seen. There should be WiFi7 versions out nowish /soon.

Stabbed … or bit?

I have a coworker who regularly wears an anti-static wrist strap that he attaches to grounding points on furniture. I’m not quite as staticy myself, so I usually just tap the screw on the light switches when I pass by during high static months. That’s usually grounded.

I’m using since corporate Eset on Linux. When did they drop support?

Looks to me like you had a delamination. Then it just squirted unconnected plastic after that. Sure you got the temperature right? Nothing might have caused your line to feed incorrectly for a minute? Last time it happened to me it was because there was too much drag on the feed. It had fallen off the bearing onto a screw, which let it keep feeding, but with extra drag.