Add patient list age fields

- Include Age and BirthdateConversion in patient list responses
- Keep Sex label transformation unchanged
- Preserve existing patient audit/update behavior

app/Models/Patient/PatientModel.php

@@ -48,6 +48,16 @@ class PatientModel extends BaseModel {
     $rows = ValueSet::transformLabels($rows, [
       'Sex' => 'sex',
     ]);
+
+    foreach ($rows as &$row) {
+      $birthdate = $row['Birthdate'] ?? null;
+      $row['Age'] = empty($birthdate)
+        ? ''
+        : $this->calculateAgeFromBirthdate($birthdate, null);
+      $row['BirthdateConversion'] = $this->formatedDateForDisplay($birthdate);
+    }
+    unset($row);
+
     return $rows;
   }