Allow Partial Refunds for Prepaid Invoices / Advance Payments

🔍 Problem Statement

Pelcro currently only supports full refunds for future phases/prepaid invoices. This prevents users/admins from applying a partial refund when they need to retroactively discount a future order. As a workaround, we have been processing these refunds directly through Stripe, but refunds processed outside Pelcro do not create the corresponding credit note and therefore are not reflected correctly in the deferred revenue accounting.

💡 User Story

As a user, I want to be able to issue partial refunds on prepaid invoices/future orders directly through Pelcro so that I can apply partial discounts or refunds while keeping the related accounting records accurate.

🎯 Definition of Done (DoD)

• Users can issue a partial refund against a prepaid/advance invoice through Pelcro.

• The partial refund creates the appropriate accounting records, including the corresponding credit note and deferred revenue adjustment.