User-Specified Redeem Output

Our current redeem function gives users a mix of stablecoins according to the exiting ratio of vault holdings. Most users would prefer to receive the entire amount in a specific stablecoin. While we don't want to risk the vault being drained, we could either tie into an AMM or implement a curve that prices each stablecoin based on its weight in the vault. This would add not only contract complexity but also UX complexity. This has been requested in the wild and is similar to the experience that users are accustomed to on Curve, Shell, etc. Once liquidity is sufficient on exchanges, this should be a less interesting feature since users will be able to sell directly for their preferred currencies whether or not they are stablecoins supported by our vault.

The issue does not name files or tests. Start by locating the redeem function and the vault's stablecoin holdings and allocation logic; then compare the proposed AMM and weight-based pricing approaches, with completion requiring an agreed design that supports user-selected stablecoin output without risking the vault being drained.