I understand what you are asking for, Im pretty long time user of OBS in very sophisticated scene and plug in setups, but I dont think my current very basic chat will do it, Im looking to swap in a different chat engine, so give me a moment on that one.
I am on the verge of getting Keychain to work though finally, almost there on that.
maybe you could Connect with @chiren ( the man behind VIMM ) to get something big done...
your chat uses a own http ??? so if ... we can implement the link easy to OBS
if you want to you can hook me up on Discord #ciderjunkie so it gets maybe easier to communicate
Here, become the second user in my HiveStreams.live discord: https://discord.gg/aWQqfnA6qu (thats a permanent discord invite link, for future comment readers, should last forever)
I have a channel for streamer support. Any questions I answer for you, or fixes we need to make, should then be open for all streamers who join there to read, to prevent duplication and help educate everyone at once :D Please and danke schon.