I can’t use a CRM that doesn’t have bidirectional sync with my existing carddav, or at least I’d have to setup such sync myself.

There’s https://github.com/mattogodoy/nametag, which added this feature recently I believe.

That’s fair. An unfortunate situation.

Have you read the post? Just wait for the new repo

You’re not wrong, but unfortunately for now github is the best for reach and discovery, which may be important for these kind of projects.

For personal use, being able to replace microsoft/google offerings with little to no functionality loss is amazing