fix: preserve interaction replies across chat recovery

src/routes/chat.ts

@@ -1,3 +1,5 @@
+import { registerInteractionRequestRoutes } from "./interaction-request-routes.js";
+import type { InteractionRequestStore } from "../sessions/interaction-request-store.js";
 import { Router, type NextFunction, type Request, type Response } from "express";
 
 import { agentModelOptions, resolveDefaultModel } from "../chat/models.js";
@@ -31,6 +33,7 @@ import { registerArtifactRoutes } from "./artifact-routes.js";
 import type { AgentMessageCoordinator } from "../chat/agent-message-coordinator.js";
 
 export type BuildChatRouterOptions = {
+  interactionRequestStore?: InteractionRequestStore;
   agentMessages?: AgentMessageCoordinator;
   frontendActionCoordinator: FrontendActionCoordinator;
   learningOrchestrator: LearningOrchestrator;
@@ -77,6 +80,8 @@ export const buildChatRouter = (options: BuildChatRouterOptions) => {
       models: agentModelOptions,
     });
   });
+  if (options.interactionRequestStore) registerInteractionRequestRoutes(chatRouter, { sessions: sessionMetadataStore, interactions: options.interactionRequestStore,
+    runtime, isRunning: (sessionId) => activeRuns.get(sessionId)?.status === "running" });
   registerArtifactRoutes(chatRouter, { sessionMetadataStore, runtime });
 
   chatRouter.get("/ui-registry", (_req, res) => {
@@ -131,6 +136,7 @@ export const buildChatRouter = (options: BuildChatRouterOptions) => {
   });
 
   registerChatSessionRoutes(chatRouter, {
+    interactionRequestStore: options.interactionRequestStore,
     learningOrchestrator,
     frontendActionCoordinator,
     runState,
@@ -145,6 +151,8 @@ export const buildChatRouter = (options: BuildChatRouterOptions) => {
   if (agentMessages) registerAgentMessageRoutes(chatRouter, { sessions: sessionMetadataStore, messages: agentMessages });
 
   registerChatAuxiliaryRoutes(chatRouter, {
+    interactionRequestStore: options.interactionRequestStore,
+    runtime,
     activeRuns,
     lastRunStatuses,
     sessionBridge,
@@ -162,6 +170,7 @@ export const buildChatRouter = (options: BuildChatRouterOptions) => {
 
   registerResponseInputRoutes(chatRouter, { runtime, sessionMetadataStore, runState });
   registerChatStreamRoute(chatRouter, {
+    interactionRequestStore: options.interactionRequestStore,
     agentMessages,
     frontendActionCoordinator,
     learningOrchestrator,