feat: add scoped history and artifacts

src/routes/chat.ts

@@ -27,6 +27,7 @@ import { registerResponseInputRoutes } from "./response-input-routes.js";
 import { registerMcpStatusRoutes } from "./mcpRoutes.js";
 import { registerChatSuggestionRoutes } from "./chatSuggestionRoutes.js";
 import { registerAgentMessageRoutes } from "./agent-message-routes.js";
+import { registerArtifactRoutes } from "./artifact-routes.js";
 import type { AgentMessageCoordinator } from "../chat/agent-message-coordinator.js";
 
 export type BuildChatRouterOptions = {
@@ -76,6 +77,7 @@ export const buildChatRouter = (options: BuildChatRouterOptions) => {
       models: agentModelOptions,
     });
   });
+  registerArtifactRoutes(chatRouter, { sessionMetadataStore, runtime });
 
   chatRouter.get("/ui-registry", (_req, res) => {
     res.json(uiRegistryResponse);