refac/fix: temp chat

src/lib/components/chat/Chat.svelte

@@ -2207,8 +2207,8 @@
 
 			selectedFolder.set(null);
 		} else {
-			_chatId = 'local';
-			await chatId.set('local');
+			_chatId = `local:${$socket?.id}`; // Use socket id for temporary chat
+			await chatId.set(_chatId);
 		}
 		await tick();
 

src/lib/components/chat/Navbar.svelte

@@ -248,7 +248,7 @@
 		</div>
 	</div>
 
-	{#if $temporaryChatEnabled && $chatId === 'local'}
+	{#if $temporaryChatEnabled && ($chatId ?? '').startsWith('local:')}
 		<div class=" w-full z-30 text-center">
 			<div class="text-xs text-gray-500">{$i18n.t('Temporary Chat')}</div>
 		</div>