Display "Remaining to Allocate" directly in the global monthly view

Currently, the "Remaining to Allocate" amount (the budget left after planning expenses) is only visible inside the detailed monthly plan screen.

It would be incredibly helpful to display this "Remaining to Allocate" figure directly on the global monthly overview screen (where we see the total budget and allocated amount).

Why? This would allow users to instantly see how much budget is still available to assign afteraccounting for planned expenses, without needing to click into the detailed plan. It would provide a quick, high-level snapshot of financial flexibility for the month at a glance.

This small addition would significantly improve the speed and ease of monthly budget monitoring!