Overview

Docs for deposits, withdrawals, and cash operation status.

Need	Doc
Understand instant vs queued cash	buffer-mechanism.md
Deposit cash into mUSD	deposits.md
Withdraw mUSD to tokens	withdrawals.md
Track deposit/withdraw status	operation-status.md

API model: deposits turn wallet cash tokens into mUsdBalance; withdrawals turn mUsdBalance back into wallet cash tokens. Buffers only determine whether that happens instantly or after queued settlement.