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/services/chatWs.js

@@ -0,0 +1,87 @@
+// Small helper to resolve the Chat WebSocket URL from env or sensible defaults
+export function getChatWsUrl() {
+  // Prefer explicit env var
+  const override = (typeof window !== 'undefined' && window.localStorage) ? window.localStorage.getItem('chatWsOverride') : '';
+  if (override && typeof override === 'string' && override.trim()) {
+    return override.trim();
+  }
+  const envUrl = import.meta?.env?.VITE_CHAT_WS_URL;
+  if (envUrl && typeof envUrl === 'string' && envUrl.trim()) {
+    return envUrl.trim();
+  }
+  // Fallback: use current origin host with ws/wss and default port/path if provided by backend
+  const isHttps = typeof window !== 'undefined' && window.location.protocol === 'https:';
+  const proto = isHttps ? 'wss' : 'ws';
+  // If a reverse proxy exposes the chat at a path, you can change '/chat' here.
+  const host = typeof window !== 'undefined' ? window.location.hostname : 'localhost';
+  const port = (typeof window !== 'undefined' && window.location.port) ? `:${window.location.port}` : '';
+  // On localhost, prefer dedicated chat port 1235 by default
+  // Prefer IPv4 for localhost to avoid browsers resolving to ::1 (IPv6) where the server may not listen
+  if (host === 'localhost' || host === '127.0.0.1' || host === '::1' || host === '[::1]') {
+    return `${proto}://127.0.0.1:1235`;
+  }
+  // Default to same origin (no hardcoded chat port). Adjust via VITE_CHAT_WS_URL if needed.
+  const defaultUrl = `${proto}://${host}${port}`;
+  return defaultUrl;
+}
+
+// Provide a list of candidate WS URLs to try, in order of likelihood.
+export function getChatWsCandidates() {
+  const override = (typeof window !== 'undefined' && window.localStorage) ? window.localStorage.getItem('chatWsOverride') : '';
+  if (override && typeof override === 'string' && override.trim()) {
+    return [override.trim()];
+  }
+  const envUrl = import.meta?.env?.VITE_CHAT_WS_URL;
+  if (envUrl && typeof envUrl === 'string' && envUrl.trim()) {
+    return [envUrl.trim()];
+  }
+  const isHttps = typeof window !== 'undefined' && window.location.protocol === 'https:';
+  const proto = isHttps ? 'wss' : 'ws';
+  const host = typeof window !== 'undefined' ? window.location.hostname : 'localhost';
+  const port = (typeof window !== 'undefined' && window.location.port) ? `:${window.location.port}` : '';
+  const candidates = [];
+  // Common local setups: include IPv4 and IPv6 loopback variants (root only)
+  if (host === 'localhost' || host === '127.0.0.1' || host === '::1' || host === '[::1]') {
+    // Prefer IPv6 loopback first when available
+    const localHosts = ['[::1]', '127.0.0.1', 'localhost'];
+    for (const h of localHosts) {
+      const base = `${proto}://${h}:1235`;
+  candidates.push(base);
+  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}`);
+  }
+  for (const base of sameOriginBases) {
+  candidates.push(base);
+  candidates.push(`${base}/`);
+  }
+  return candidates;
+}
+
+// Return optional subprotocols for the WebSocket handshake.
+export function getChatWsProtocols() {
+  try {
+    const ls = (typeof window !== 'undefined' && window.localStorage) ? window.localStorage.getItem('chatWsProtocols') : '';
+    if (ls && ls.trim()) {
+      // Accept JSON array or comma-separated
+      if (ls.trim().startsWith('[')) return JSON.parse(ls);
+      return ls.split(',').map(s => s.trim()).filter(Boolean);
+    }
+  } catch (_) {}
+  const env = import.meta?.env?.VITE_CHAT_WS_PROTOCOLS;
+  if (env && typeof env === 'string' && env.trim()) {
+    try {
+      if (env.trim().startsWith('[')) return JSON.parse(env);
+    } catch (_) {}
+    return env.split(',').map(s => s.trim()).filter(Boolean);
+  }
+  // Default to the 'chat' subprotocol so the server can gate connections accordingly
+  return ['chat'];
+}
+