Excellent! I was looking for a lightweight OSS alternative to Freshdesk/Zendesk and, honestly, didn’t find any worth deploying. Yours looks very promising, and we’ll definitely assess it.
I don't know how lightweight you're looking for, but you might also want to have a look at Zammad: https://github.com/zammad/zammad I worked with a self-hosted deployment of it before, and it was reasonably low-maintenance.