fix: message actions per-tap only, image sizing, notification sound

- Message action buttons now show per-message (tap on mobile, hover on desktop)
  via state instead of CSS group-hover — fixes all-at-once display on iOS
- Click on message list background closes active action menu
- Images: object-contain + max-w-[240px] so stickers display correctly
- Add Web Audio beep when new message arrives from others (respects mute)

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

frontend/src/App.tsx

@@ -25,6 +25,24 @@ import { useStore } from './store';
 import { wsClient } from './api/ws';
 import api from './api/client';
 
+let _audioCtx: AudioContext | null = null;
+function playBeep() {
+  try {
+    if (!_audioCtx) _audioCtx = new AudioContext();
+    const ctx = _audioCtx;
+    const osc = ctx.createOscillator();
+    const gain = ctx.createGain();
+    osc.connect(gain);
+    gain.connect(ctx.destination);
+    osc.type = 'sine';
+    osc.frequency.value = 880;
+    gain.gain.setValueAtTime(0.12, ctx.currentTime);
+    gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + 0.35);
+    osc.start(ctx.currentTime);
+    osc.stop(ctx.currentTime + 0.35);
+  } catch {}
+}
+
 function AuthGuard({ children }: { children: React.ReactNode }) {
   const user = useStore(s => s.user);
   return user ? <>{children}</> : <Navigate to="/login" replace />;
@@ -68,6 +86,11 @@ export default function App() {
 
     wsClient.on('new_message', (msg) => {
       addMessage(msg);
+      const state = useStore.getState();
+      if (msg.sender?.id !== state.user?.id) {
+        const chat = state.chats.find(c => c.id === msg.chatId);
+        if (!chat?.isMuted) playBeep();
+      }
     });
 
     wsClient.on('message_edited', (msg) => {

frontend/src/components/MessageItem.tsx

@@ -1,7 +1,6 @@
 import { format } from 'date-fns';
 import { ru } from 'date-fns/locale';
 import { Check, CheckCheck, Pencil, Trash2, Reply, Download } from 'lucide-react';
-import { useState } from 'react';
 import { Message } from '../types';
 import Avatar from './Avatar';
 
@@ -11,19 +10,19 @@ interface Props {
   showAvatar: boolean;
   isGroup: boolean;
   isRead: boolean;
+  showActions: boolean;
+  onShowActions: () => void;
   onReply: (msg: Message) => void;
   onDelete: (id: string) => void;
   onEdit: (msg: Message) => void;
 }
 
-export default function MessageItem({ message, isMine, showAvatar, isGroup, isRead, onReply, onDelete, onEdit }: Props) {
-  const [showMenu, setShowMenu] = useState(false);
-
+export default function MessageItem({ message, isMine, showAvatar, isGroup, isRead, showActions, onShowActions, onReply, onDelete, onEdit }: Props) {
   if (message.isDeleted) {
     return (
       <div className={`flex items-end gap-2 mb-1 ${isMine ? 'flex-row-reverse' : ''}`}>
         {showAvatar && !isMine ? <div className="w-8" /> : null}
-        <div className={`px-3 py-2 rounded-2xl text-sm italic text-gray-400 bg-gray-100 max-w-xs`}>
+        <div className="px-3 py-2 rounded-2xl text-sm italic text-gray-400 bg-gray-100 max-w-xs">
           Сообщение удалено
         </div>
       </div>
@@ -37,8 +36,8 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
 
   return (
     <div
-      className={`flex items-end gap-2 mb-1 group ${isMine ? 'flex-row-reverse' : ''}`}
-      onMouseLeave={() => setShowMenu(false)}
+      className={`flex items-end gap-2 mb-1 ${isMine ? 'flex-row-reverse' : ''}`}
+      onMouseEnter={onShowActions}
     >
       {/* Avatar */}
       {!isMine && isGroup ? (
@@ -48,7 +47,10 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
       ) : null}
 
       {/* Bubble */}
-      <div className={`relative max-w-[70%] lg:max-w-[60%] ${isMine ? 'items-end' : 'items-start'} flex flex-col`}>
+      <div
+        className={`relative max-w-[70%] lg:max-w-[60%] ${isMine ? 'items-end' : 'items-start'} flex flex-col`}
+        onClick={onShowActions}
+      >
         {/* Sender name in group */}
         {!isMine && isGroup && showAvatar && message.sender && (
           <span className="text-xs font-medium mb-0.5 px-1" style={{ color: message.sender.avatarColor }}>
@@ -58,7 +60,7 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
 
         {/* Reply preview */}
         {message.replyTo && (
-          <div className={`mb-1 px-3 py-1.5 rounded-xl text-xs border-l-2 border-blue-400 bg-blue-50 max-w-full`}>
+          <div className="mb-1 px-3 py-1.5 rounded-xl text-xs border-l-2 border-blue-400 bg-blue-50 max-w-full">
             <div className="font-medium text-blue-600">{message.replyTo.senderName}</div>
             <div className="text-gray-600 truncate">{message.replyTo.content}</div>
           </div>
@@ -66,10 +68,14 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
 
         {/* Images */}
         {imageAttachments.length > 0 && (
-          <div className="mb-1 rounded-xl overflow-hidden">
+          <div className="mb-1">
             {imageAttachments.map(a => (
               <a key={a.id || a.filename} href={a.url} target="_blank" rel="noopener noreferrer">
-                <img src={a.url} alt={a.originalName} className="max-w-full max-h-64 object-cover rounded-xl" />
+                <img
+                  src={a.url}
+                  alt={a.originalName}
+                  className="max-w-[240px] max-h-64 object-contain rounded-xl block"
+                />
               </a>
             ))}
           </div>
@@ -115,10 +121,10 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
         )}
       </div>
 
-      {/* Actions */}
-      <div className={`opacity-0 group-hover:opacity-100 transition-opacity flex items-center gap-1 ${isMine ? 'flex-row-reverse' : ''}`}>
+      {/* Actions — visible only for active message */}
+      <div className={`transition-opacity flex items-center gap-1 ${showActions ? 'opacity-100' : 'opacity-0 pointer-events-none'} ${isMine ? 'flex-row-reverse' : ''}`}>
         <button
-          onClick={() => onReply(message)}
+          onClick={(e) => { e.stopPropagation(); onReply(message); }}
           className="p-1 rounded-lg hover:bg-gray-200 text-gray-400 hover:text-gray-600 transition-colors"
           title="Ответить"
         >
@@ -126,7 +132,7 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
         </button>
         {isMine && message.type === 'text' && (
           <button
-            onClick={() => onEdit(message)}
+            onClick={(e) => { e.stopPropagation(); onEdit(message); }}
             className="p-1 rounded-lg hover:bg-gray-200 text-gray-400 hover:text-gray-600 transition-colors"
             title="Редактировать"
           >
@@ -135,7 +141,7 @@ export default function MessageItem({ message, isMine, showAvatar, isGroup, isRe
         )}
         {isMine && (
           <button
-            onClick={() => onDelete(message.id)}
+            onClick={(e) => { e.stopPropagation(); onDelete(message.id); }}
             className="p-1 rounded-lg hover:bg-red-100 text-gray-400 hover:text-red-500 transition-colors"
             title="Удалить"
           >

frontend/src/components/MessageList.tsx

@@ -36,6 +36,7 @@ export default function MessageList({ chatId, isGroup, canSend }: Props) {
   const [replyTo, setReplyTo] = useState<Message | null>(null);
   const [editMsg, setEditMsg] = useState<Message | null>(null);
   const [showScrollBtn, setShowScrollBtn] = useState(false);
+  const [activeMenuMsgId, setActiveMenuMsgId] = useState<string | null>(null);
   const isAtBottom = useRef(true);
 
   useEffect(() => {
@@ -128,6 +129,8 @@ export default function MessageList({ chatId, isGroup, canSend }: Props) {
         showAvatar={showAvatar}
         isGroup={isGroup}
         isRead={!!(chatReadAt[chatId] && msg.createdAt <= chatReadAt[chatId])}
+        showActions={activeMenuMsgId === msg.id}
+        onShowActions={() => setActiveMenuMsgId(msg.id)}
         onReply={handleReply}
         onDelete={handleDelete}
         onEdit={handleEdit}
@@ -141,6 +144,7 @@ export default function MessageList({ chatId, isGroup, canSend }: Props) {
       <div
         ref={containerRef}
         onScroll={handleScroll}
+        onClick={() => setActiveMenuMsgId(null)}
         className="flex-1 overflow-y-auto px-4 py-3 space-y-0.5"
       >
         {loading && msgs.length === 0 && (