Add password reset localization and chat configuration

- Implemented German and English localization for password reset functionality.
- Added WebSocket URL resolution logic in chat services to support various environments and configurations.
- Created centralized chat configuration for event keys and payload mappings.
- Developed RoomsView component for admin chat room management, including create, edit, and delete functionalities.

frontend/src/utils/chatConfig.js

@@ -0,0 +1,87 @@
+// Centralized config for YourChat protocol mapping and WS endpoint
+// Override via .env (VITE_* variables)
+
+const env = import.meta.env || {};
+
+export const CHAT_WS_URL = env.VITE_CHAT_WS_URL
+  || (env.VITE_CHAT_WS_HOST || env.VITE_CHAT_WS_PORT
+      ? `ws://${env.VITE_CHAT_WS_HOST || 'localhost'}:${env.VITE_CHAT_WS_PORT || '1235'}`
+      : `ws://localhost:1235`);
+
+// Event/type keys
+export const CHAT_EVENT_KEY = env.VITE_CHAT_EVENT_KEY || 'type';
+export const CHAT_EVT_TOKEN = env.VITE_CHAT_EVT_TOKEN || 'token';
+export const CHAT_EVT_AUTH = env.VITE_CHAT_EVT_AUTH || 'auth'; // optional, YourChat nutzt Token
+export const CHAT_EVT_JOIN = env.VITE_CHAT_EVT_JOIN || 'join';
+export const CHAT_EVT_MESSAGE = env.VITE_CHAT_EVT_MESSAGE || 'message';
+export const CHAT_EVT_SYSTEM = env.VITE_CHAT_EVT_SYSTEM || 'system';
+
+// Field names for payloads
+export const CHAT_JOIN_ROOM_KEY = env.VITE_CHAT_JOIN_ROOM_KEY || 'newroom';
+export const CHAT_JOIN_LEAVE_ROOM_KEY = env.VITE_CHAT_JOIN_LEAVE_ROOM_KEY || 'password'; // YourChat erwartet password Feld; leave optional nicht vorgesehen
+export const CHAT_MESSAGE_ROOM_KEY = env.VITE_CHAT_MESSAGE_ROOM_KEY || null; // YourChat braucht kein roomId im message payload
+
+export const CHAT_MSG_TEXT_KEY = env.VITE_CHAT_MSG_TEXT_KEY || 'message';
+export const CHAT_MSG_FROM_KEY = env.VITE_CHAT_MSG_FROM_KEY || 'userName';
+export const CHAT_MSG_ID_KEY = env.VITE_CHAT_MSG_ID_KEY || 'id';
+export const CHAT_TOKEN_KEY = env.VITE_CHAT_TOKEN_KEY || 'token';
+
+// Auth payload mapping
+export const CHAT_AUTH_PAYLOAD_KEY = env.VITE_CHAT_AUTH_PAYLOAD_KEY || 'data';
+export const CHAT_AUTH_USER_ID_KEY = env.VITE_CHAT_AUTH_USER_ID_KEY || 'userId';
+export const CHAT_AUTH_AUTHCODE_KEY = env.VITE_CHAT_AUTH_AUTHCODE_KEY || 'authCode';
+
+export function buildAuthPayload(user) {
+  const payload = {};
+  payload[CHAT_EVENT_KEY] = CHAT_EVT_AUTH;
+  const dataObj = {};
+  if (user?.id != null) dataObj[CHAT_AUTH_USER_ID_KEY] = user.id;
+  if (user?.authCode != null) dataObj[CHAT_AUTH_AUTHCODE_KEY] = user.authCode;
+  payload[CHAT_AUTH_PAYLOAD_KEY] = dataObj;
+  return payload;
+}
+
+export function buildJoinPayload(roomName, password = '') {
+  const payload = {};
+  payload[CHAT_EVENT_KEY] = CHAT_EVT_JOIN;
+  if (roomName != null) payload[CHAT_JOIN_ROOM_KEY] = roomName;
+  if (CHAT_JOIN_LEAVE_ROOM_KEY) payload[CHAT_JOIN_LEAVE_ROOM_KEY] = password;
+  return payload;
+}
+
+export function buildMessagePayload(text) {
+  const payload = {};
+  payload[CHAT_EVENT_KEY] = CHAT_EVT_MESSAGE;
+  if (CHAT_MESSAGE_ROOM_KEY && typeof CHAT_MESSAGE_ROOM_KEY === 'string') payload[CHAT_MESSAGE_ROOM_KEY] = null;
+  payload[CHAT_MSG_TEXT_KEY] = text;
+  return payload;
+}
+
+export function parseIncomingMessage(data) {
+  // Try JSON, else return as system text
+  let obj = data;
+  if (typeof data === 'string') {
+    try { obj = JSON.parse(data); } catch (_) { return { type: 'system', text: String(data) }; }
+  }
+  const type = obj[CHAT_EVENT_KEY] || obj.type;
+  if (type === CHAT_EVT_TOKEN) {
+    return { type: 'token', token: obj.message };
+  }
+  if (type === CHAT_EVT_MESSAGE || type === 'message') {
+    return {
+      type: 'message',
+      id: obj[CHAT_MSG_ID_KEY] || Date.now(),
+      from: obj[CHAT_MSG_FROM_KEY] || 'User',
+      text: obj[CHAT_MSG_TEXT_KEY] || ''
+    };
+  }
+  if (type === CHAT_EVT_SYSTEM || type === 'system') {
+    return {
+      type: 'system',
+      id: obj[CHAT_MSG_ID_KEY] || Date.now(),
+      text: obj[CHAT_MSG_TEXT_KEY] || ''
+    };
+  }
+  // Fallback: unknown event -> show raw
+  return { type: 'system', id: Date.now(), text: JSON.stringify(obj) };
+}