As a system User, I want the beneficiary's age to be automatically updated based on their revisit date, So that the beneficiary’s age reflects the correct value whenever they visit, based on the time elapsed since their last visit.

Acceptance Criteria:

1.Initial Age Entry:

When a beneficiary first visits on 29-11-2024 and their age is entered as 25 years, the system stores the age and calculates their age based on the visit date.

2.Revisit Calculation:

If the beneficiary revisits on 29-11-2025, the system automatically calculates and displays the updated age as 26 years, reflecting the one-year passage since their last visit.

3.Regular Visit Interval:
The system recognizes that the beneficiary visits regularly every two months (or any defined frequency) and calculates the exact age based on the revisit date from the last recorded visit.

4.Automatic Age Update:
The age should be updated without manual intervention, and the new age should appear on the beneficiary's profile immediately after the revisit date is entered.

5.Consistency of Age Calculation:
The system ensures that the beneficiary's age remains consistent with the passage of time, so if the revisit happens exactly a year later, the beneficiary’s age is incremented by one year, regardless of whether the revisit occurs on the exact day of the year.