[Frax] [FIP-442] Optional Early Exit for the Legacy crvUSD/L-FRAX Convex FRAX Vault (4% Fee)

Summary

Quorum: 6.66m CVX Authors: Mockingbird Summary: This proposal introduces a one-time optional early exit program for the legacy crvUSD/L-FRAX Convex FRAX vault. Eligible lockers may exit before lock expiry by paying a fixed 4% fee on the amount exited. The 4% fee is the sole economic condition of this optional early exit path. This proposal applies only to this specific legacy vault. Background & Motivation: The crvUSD/L-FRAX Convex FRAX vault is a legacy route after the FRAX to frxUSD...