Fix: Chat WebSocket auf Port 1235 umgestellt

Problem:
- Chat WebSocket versuchte wss://www.your-part.de (ohne Port)
- Sollte wss://www.your-part.de:1235 sein (direkte Verbindung)

Lösung:
- getChatWsUrl() verwendet jetzt Port 1235 für Production
- getChatWsCandidates() verwendet Port 1235 für alle Hosts
- Direkte Verbindung zum Chat-Server auf Port 1235

Chat-Server:
- Läuft mit SSL auf Port 1235
- yourchat.service: SSL WebSocket Server starting on port 1235
- Frontend: wss://www.your-part.de:1235 mit 'chat' Protokoll

frontend/src/services/chatWs.js

@@ -20,8 +20,8 @@ export function getChatWsUrl() {
   if (host === 'localhost' || host === '127.0.0.1' || host === '::1' || host === '[::1]') {
     return `${proto}://127.0.0.1:1235`;
   }
-  // Default to same origin with socket.io path for production
-  const defaultUrl = `${proto}://${host}${port}/socket.io/`;
+  // Default to same origin with chat port for production
+  const defaultUrl = `${proto}://${host}:1235`;
   return defaultUrl;
 }
 
@@ -50,12 +50,12 @@ export function getChatWsCandidates() {
   candidates.push(`${base}/`);
     }
   }
-  // Same-origin root and common WS paths
-  const sameOriginBases = [`${proto}://${host}${port}`];
-  // If localhost-ish, also try 127.0.0.1 for same-origin port
-  if ((host === 'localhost' || host === '::1' || host === '[::1]') && port) {
-    sameOriginBases.push(`${proto}://[::1]${port}`);
-    sameOriginBases.push(`${proto}://127.0.0.1${port}`);
+  // Same-origin with chat port
+  const sameOriginBases = [`${proto}://${host}:1235`];
+  // If localhost-ish, also try 127.0.0.1 for chat port
+  if (host === 'localhost' || host === '::1' || host === '[::1]') {
+    sameOriginBases.push(`${proto}://[::1]:1235`);
+    sameOriginBases.push(`${proto}://127.0.0.1:1235`);
   }
   for (const base of sameOriginBases) {
   candidates.push(base);