BreadchainCoop/breadfunds

AI Summary: Implement a withdrawal limit for small amounts in the Solidity smart contract to prevent exploitation by repeatedly withdrawing tiny sums. This involves adding a new parameter (minimum withdrawal amount) and modifying the withdrawal function to enforce this limit. Thorough testing (unit and integration) is required to ensure the functionality works correctly and doesn't introduce unintended consequences. The changes must adhere to the project's coding standards, including interface specifications, testing requirements (100% unit and integration coverage), and commit message conventions.