refactor: update deleteConversation to perform soft-delete without notifying other participants

src/messages/messages.controller.ts

@@ -298,22 +298,9 @@ export class MessagesController {
     @Param('id') conversationId: string,
     @CurrentUser('id') userId: string,
   ) {
-    // Get the other party before deletion so we can notify them
-    const participants = await this.messagesService.getConversationParticipants(conversationId);
-    const result = await this.messagesService.deleteConversation(conversationId, userId);
-
-    // Notify the other party so their client removes the stale conversation
-    if (participants) {
-      const otherUserId = userId === participants.userId
-        ? participants.agentUserId
-        : participants.userId;
-      this.messagesGateway.sendToUser(otherUserId, 'conversation_deleted', {
-        conversationId,
-        deletedBy: userId,
-      });
-    }
-
-    return result;
+    // Soft-delete: only hides the conversation for the requesting user.
+    // The other party is NOT notified — their view is unaffected.
+    return this.messagesService.deleteConversation(conversationId, userId);
   }
 
   // ==========================================