fix: private chat creation and search in NewChatModal

- Fix: onOpen now async, MainLayout fetches fresh chats before opening
  (was using stale closure, chat wasn't found after creation)
- Fix: search null-safety in user list filter (displayName/username could be undefined)
- Fix: search also matches by phone number

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/NewChatModal.tsx

@@ -1,12 +1,11 @@
 import { useState, useEffect } from 'react';
 import { X, Search, MessageCircle, Users, Radio } from 'lucide-react';
 import api from '../api/client';
-import { useStore } from '../store';
 import Avatar from './Avatar';
 
 interface Props {
   onClose: () => void;
-  onOpen: (chatId: string) => void;
+  onOpen: (chatId: string) => Promise<void>;
 }
 
 type Step = 'type' | 'user' | 'group';
@@ -19,16 +18,18 @@ export default function NewChatModal({ onClose, onOpen }: Props) {
   const [selected, setSelected] = useState<string[]>([]);
   const [groupTitle, setGroupTitle] = useState('');
   const [loading, setLoading] = useState(false);
-  const { setChats, chats } = useStore();
+
 
   useEffect(() => {
     api.get('/api/users').then(r => setUsers(r.data));
   }, []);
 
-  const filtered = users.filter(u =>
-    u.displayName.toLowerCase().includes(search.toLowerCase()) ||
-    u.username.toLowerCase().includes(search.toLowerCase())
-  );
+  const filtered = !search.trim() ? users : users.filter(u => {
+    const q = search.toLowerCase();
+    return (u.displayName || '').toLowerCase().includes(q) ||
+      (u.username || '').toLowerCase().includes(q) ||
+      (u.phone || '').includes(q);
+  });
 
   function toggleSelect(id: string) {
     setSelected(s => s.includes(id) ? s.filter(x => x !== id) : [...s, id]);
@@ -38,12 +39,10 @@ export default function NewChatModal({ onClose, onOpen }: Props) {
     setLoading(true);
     try {
       const { data } = await api.post(`/api/chats/private/${userId}`);
-      const { data: chat } = await api.get(`/api/chats/${data.id}`);
-      // Refresh chats
-      const { data: allChats } = await api.get('/api/chats');
-      setChats(allChats);
-      onOpen(data.id);
       onClose();
+      await onOpen(data.id);
+    } catch (e: any) {
+      console.error('createPrivate error', e);
     } finally {
       setLoading(false);
     }
@@ -58,10 +57,10 @@ export default function NewChatModal({ onClose, onOpen }: Props) {
         title: groupTitle,
         memberIds: selected,
       });
-      const { data: allChats } = await api.get('/api/chats');
-      setChats(allChats);
-      onOpen(data.id);
       onClose();
+      await onOpen(data.id);
+    } catch (e: any) {
+      console.error('createGroup error', e);
     } finally {
       setLoading(false);
     }

frontend/src/pages/MainLayout.tsx

@@ -246,9 +246,13 @@ export default function MainLayout() {
       </div>
 
       {/* Modals */}
-      {showNew && <NewChatModal onClose={() => setShowNew(false)} onOpen={(id) => {
-        const chat = chats.find(c => c.id === id);
-        if (chat) openChat(chat);
+      {showNew && <NewChatModal onClose={() => setShowNew(false)} onOpen={async (id) => {
+        try {
+          const { data: allChats } = await api.get('/api/chats');
+          setChats(allChats);
+          const found = allChats.find((c: any) => c.id === id);
+          if (found) openChat(found);
+        } catch {}
       }} />}
       {showAdmin && <AdminPanel onClose={() => setShowAdmin(false)} />}
       {showProfile && <ProfileModal onClose={() => setShowProfile(false)} />}