ERC8004 Base Manager

Generates the 'to', 'data', and 'value' for registering an Agent Identity on the Base Network's ERC-8004 Registry (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432). Uses the verified implementation selector register(string) (0xf2c298be) to bypass Proxy ABI mismatches.