there needs to be a wallet that comes with plausible deniability baked into it:

some sort of "hidden mode" that hides every transaction recieved, and the total amount currently in his possession even when bob the farmer gets forced by an adversary to type his password and show the real amount of monero he recieved so far.

something like Password A opens the wallet in hidden mode, and Password B opens the wallet in normal mode, showing everything. (inspired by how veracrypt provides plausible deniability). And from there the adversary can't confirm anything other than the transaction he sent to your wallet, as everything else remains hidden.

imo, you cant do much currently if you have an adversary that knows that you recieved a specific amount of monero to a specific address, and he literally forces you to open your monero wallet, to be able to know what's the true amount of monero currently in your possession, to steal it from you.

(can't just show him an other empty wallet as the adversary will look for the recieving addresses, to see if it's the same or not.)

Haveno is close to what you're describing, it doesnt have federation yet, but it's discussed here https://github.com/haveno-dex/haveno/issues/901