Add member change event handling for real-time updates

This commit introduces a new socket event for member changes, allowing real-time updates when members are created or updated. The backend now emits a 'member:changed' event upon successful member modifications, while the frontend listens for this event to refresh the member list in the DiaryView component. This enhances the interactivity and responsiveness of the application, ensuring users receive immediate feedback on member changes.

backend/controllers/memberController.js

@@ -1,5 +1,6 @@
 import MemberService from "../services/memberService.js";
 import MemberTransferService from "../services/memberTransferService.js";
+import { emitMemberChanged } from '../services/socketService.js';
 
 import { devLog } from '../utils/logger.js';
 const getClubMembers = async(req, res) => {
@@ -32,6 +33,12 @@ const setClubMembers = async (req, res) => {
         const { authcode: userToken } = req.headers;
         const addResult = await MemberService.setClubMember(userToken, clubId, memberId, firstName, lastName, street, city, postalCode, birthdate, 
             phone, email, active, testMembership, picsInInternetAllowed, gender, ttr, qttr, memberFormHandedOver, contacts);
+        
+        // Emit Socket-Event wenn Member erfolgreich erstellt/aktualisiert wurde
+        if (addResult.status === 200) {
+            emitMemberChanged(clubId);
+        }
+        
         res.status(addResult.status || 500).json(addResult.response);
     } catch (error) {
         console.error('[setClubMembers] - Error:', error);