Fixed "ReferenceError: t is not defined" error by:
- Adding t parameter to calcularPaybackCompleto() function
- Adding t parameter to formatearPaybackResult() function
- Updating all call sites to pass t from useTranslation() hook
Helper functions defined outside React components cannot directly
access the t() function from useTranslation() hook. They must receive
it as a parameter from the component.
https://claude.ai/code/session_01GNbnkFoESkRcnPr3bLCYDg
496da958c2