Refactor service status response: migrate bangui_version into version field

frontend/src/components/config/ServerHealthSection.tsx

@@ -352,12 +352,6 @@ export function ServerHealthSection(): React.JSX.Element {
                   <Text className={styles.statValue}>{status.version}</Text>
                 </div>
               )}
-              {status.bangui_version && (
-                <div className={styles.statCard}>
-                  <Text className={styles.statLabel}>BanGUI</Text>
-                  <Text className={styles.statValue}>{status.bangui_version}</Text>
-                </div>
-              )}
               <div className={styles.statCard}>
                 <Text className={styles.statLabel}>Active Jails</Text>
                 <Text className={styles.statValue}>{status.jail_count}</Text>