Depending on your use case, KeePassXC supports reading local vaults, but currently just reading them because I didn't have the need to try and round-trip the vaults for my on-call laptop.

I don't believe it would be an overwhelming amount of work to implement the write portion (err, aside from getting a security review) but I do seriously doubt that KeePassXC would accept the PR to change the backing store, meaning it would have to be a fork :-(