Надёжная real-time доставка сообщений в чатах: SSE buffer, Last-Event-ID, polling fallback

server/routes/chat.messages.routes.ts

@@ -41,7 +41,8 @@ export function registerChatMessageRoutes(router: Router): void {
           }
         }
 
-        const messages = await storage.getTaskMessages(taskId, req.organizationId!);
+        const afterId = req.query.afterId ? parseInt(req.query.afterId as string) : undefined;
+        const messages = await storage.getTaskMessages(taskId, req.organizationId!, afterId);
         res.json({ success: true, messages });
       } catch (error) {
         console.error('Get task messages error:', error);
@@ -178,8 +179,9 @@ export function registerChatMessageRoutes(router: Router): void {
 
             if (bot.type === 'ai_assistant') {
               if (!checkBotAccess(bot, req.user!)) {
+                let denialMessage;
                 try {
-                  await storage.createTaskMessage({
+                  denialMessage = await storage.createTaskMessage({
                     taskId,
                     formId: task.formId,
                     authorId: null,
@@ -193,12 +195,20 @@ export function registerChatMessageRoutes(router: Router): void {
                 } catch (err) {
                   console.error(`[AI-Bot] Failed to post denial message for bot ${bot.id}:`, err);
                 }
-                eventBus.publishEvent({
-                  type: 'message_created',
-                  data: { taskId },
-                  organizationId: req.organizationId,
-                  taskId,
-                });
+                if (denialMessage) {
+                  eventBus.publishEvent({
+                    type: 'message_created',
+                    data: {
+                      taskId,
+                      message: {
+                        ...denialMessage,
+                        bot: bot ? { id: bot.id, name: bot.name, avatarUrl: bot.avatarUrl ?? null } : null,
+                      },
+                    },
+                    organizationId: req.organizationId,
+                    taskId,
+                  });
+                }
                 continue;
               }
 
@@ -209,14 +219,8 @@ export function registerChatMessageRoutes(router: Router): void {
                 attachments: createdMessage.attachments || undefined,
                 user: req.user!,
                 organizationId: req.organizationId!,
-              }).then(() => {
-                eventBus.publishEvent({
-                  type: 'message_created',
-                  data: { taskId },
-                  organizationId: req.organizationId,
-                  taskId,
-                });
               }).catch(err => console.error(`[AI-Bot] Error for bot ${bot.name}:`, err));
+              // postBotReply внутри handleAiBotMention сам публикует message_created с полным сообщением
 
               continue;
             }