Vault's Shamir shares currently contain only polynomial payload bytes and a final x-coordinate.

Vault's Shamir shares currently contain only polynomial payload bytes and a final x-coordinate.: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). That is enough for interpolation, but it gives recovery tooling no way to know the intended threshold or detect a…