alvaroaxsmith/app-gym

AI Summary: This issue requests the implementation of snackbars to provide visual feedback to users after a login attempt. The snackbars should display either a success message upon successful login or an error message if the login fails.

AI Summary: The issue highlights a display problem in the ranking feature where fiber calculations result in values less than 1kg, which are currently not shown correctly or lack the appropriate unit. The proposed solution is to adjust the display format for these small values to `0,x kg`, ensuring the `kg` unit is always present and the precise decimal value is shown.