1.19.1 did not work directly for me either.
Installing 1.19.0 worked fine, then I was able to upgrade to 1.19.1 normally in app.
It sounds like you’re looking for intrusion detection or prevention rather than antivirus.
Great list here https://github.com/sbilly/awesome-security#ids--ips--host-ids--host-ips
However it’s likely that these do not run on asuswrt-merlin out of the box and may require additional setup or hardware.
You may even be good enough by using the built in firewall on the router interface and making sure no ports are open/forwarded.
But, why?
ClamAV is a scanning engine that uses a database and heuristics to detect an infection.
Are you looking for an Anti Virus Scanner, or Intrusion Prevention System?
I’ve been looking for this (with minimal effort) for years after first seeing it in the early days of the internet. Thank you for posting OP.
I like this one, but as a slight change:
RAM holds the apples you gave it until it is knocked out and drops them all and has no idea what an apple is when it wakes up.
Flash holds the apples you gave it and sets them down in the exact order you gave it to them, sleeps, and picks them back up again when it wakes up ready to hand them back.
Usually, the larger the drive, the less $ per GB. 16 and 18 TB drives for example would be where you would want to aim for if you’re starting out fresh.
If you want to mix and match what you already have, unRaid is an option that does that well.