I have updated the github repository with code that will work for falcon-512 verification on chain using SHAKE256. Once again that link is GitHub - Cointrol-Limited/QuantumAccount: An implementation of an ERC4337 wallet that uses FIPS 206 (falcon-1024) for signature verification
I have also published the contract on Sepolia and updated etherscan with the contract details. That can be found here: Address: 0x6f70f347...3Ea76dB45 | Etherscan Sepolia
I plan to release a free wallet in sepolia in the next week that uses the facon-512 implementation for anyone to try out.