fix: restore web widget realtime replies (HH-556) (#136)

* fix: restore web widget realtime replies (HH-556)

* fix: make realtime delivery durable (HH-556)

* fix: make realtime message outbox atomic (HH-556)

---------

Co-authored-by: Rogee <rogee@ipao.vip>

backend/internal/app/bootstrap.go

@@ -786,11 +786,14 @@ func Bootstrap(env string) (*App, error) {
 		}
 	})
 	eventPublisher := wspkg.NewEventPublisher(wsHub, nil, wsRelay)
+	eventPublisher.SetWorkerPool(workerPool)
 	presenceTracker := wspkg.NewPresenceTracker(rdb, wsRelay)
 
 	// Bridge channel dispatcher events to the WebSocket EventPublisher so that
 	// message/conversation/contact events reach connected WS/SSE clients.
-	channelDispatcher.Register(wsevent.New(eventPublisher))
+	realtimeBridge := wsevent.New(eventPublisher)
+	channelDispatcher.Register(realtimeBridge)
+	messageService.SetRealtimeEventBridge(realtimeBridge)
 
 	// Widget service + handler (M11 — WebWidget channel completion)
 	// hubTypingAdapter delegates typing events to the WS hub's direct broadcast,
@@ -802,6 +805,7 @@ func Bootstrap(env string) (*App, error) {
 	widgetService := service.NewWidgetService(inboxRepo, contactRepo, contactInboxRepo, conversationRepo, messageRepo, widgetTypingAdapter, widgetThemeConfigRepo, preChatFormRepo, widgetFileUploadRepo, widgetOfflineMessageRepo, inboxMemberRepo, tagRepo, campaignRepo)
 	widgetService.SetWorkerPool(workerPool)
 	widgetService.SetDispatcher(channelDispatcher)
+	widgetService.SetRealtimeEventBridge(realtimeBridge)
 	widgetHandler := widget.NewHandler(widgetService)
 
 	// Upload: DirectUpload repo + service + handler (account-level + widget direct uploads)