Overview + automatic checks for “more training sessions than bundle/credits”

As a coach, I want a single overview that shows which members consistently take more training sessions than their bundle/credits (including negative balance), with clear alerts and automatic checks. Think of: warnings when credits are (almost) 0, a report on “members with negative credits”, and rules configurable per subscription, such as blocking bookings, maximum negative credits, or automatically charging for an extra session/single payment as soon as the bundle is exceeded. This aligns with the concept of (configurable) negative credits, but primarily adds monitoring and enforcement.