Migrate frontend realtime messaging to SSE.

Switch service integrations and screen/store consumers from websocket events to SSE, and ignore generated dist-web artifacts.

Made-with: Cursor

src/screens/message/components/EmbeddedChat.tsx

@@ -145,7 +145,7 @@ export const EmbeddedChat: React.FC<EmbeddedChatProps> = ({ conversation, onBack
             <Text style={styles.senderName}>{item.sender?.nickname || item.sender?.username}</Text>
           )}
           <Text style={[styles.messageText, isMe ? styles.messageTextMe : styles.messageTextOther]}>
-            {extractTextFromSegments(item.segments)}
+            {item.status === 'recalled' ? '消息已撤回' : extractTextFromSegments(item.segments)}
           </Text>
         </View>
         {isMe && (