fix and update

apps/frontend/hooks/use-e2e-chat.ts

@@ -11,6 +11,8 @@ import {
   type E2EMessagePayload
 } from '@/lib/e2e-chat';
 
+const publishedE2EKeys = new Set<string>();
+
 export function resolveChatPeerUserId(room: ChatRoom | null | undefined, userId: string | undefined) {
   if (!room || !userId) return null;
   const fromMembers = room.members.find((member) => member.userId !== userId)?.userId;
@@ -69,7 +71,10 @@ export function useE2EChat(options: {
     void (async () => {
       try {
         const { publicKey } = await ensureE2EKeyPair(options.userId!);
+        const cacheKey = `${options.userId}:${publicKey}`;
+        if (publishedE2EKeys.has(cacheKey)) return;
         await setUserE2EPublicKey(options.userId!, publicKey, options.token);
+        publishedE2EKeys.add(cacheKey);
       } catch {
         // фоновая инициализация E2E
       }