Remove legacy orchestration and MCP aliases; reroute recursive pipeline API

src/agents/lifecycle-observer.ts

@@ -8,7 +8,6 @@ import { type ProjectContextPatch, type FileSystemProjectContextStore } from "./
 import { PersonaRegistry } from "./persona-registry.js";
 import {
   FileSystemStateContextManager,
-  type SessionHistoryEntry,
 } from "./state-context.js";
 import type { ActorExecutionResult, ActorResultStatus } from "./pipeline.js";
 
@@ -56,14 +55,7 @@ export class PersistenceLifecycleObserver implements PipelineLifecycleObserver {
         })
       : {};
 
-    const legacyHistoryEvent: SessionHistoryEntry = {
-      nodeId: event.node.id,
-      event: event.result.status,
-      timestamp: new Date().toISOString(),
-      ...(event.result.payload ? { data: event.result.payload } : {}),
-    };
-
-    const domainHistoryEvents: SessionHistoryEntry[] = event.domainEvents.map((domainEvent) => ({
+    const domainHistoryEvents = event.domainEvents.map((domainEvent) => ({
       nodeId: event.node.id,
       event: domainEvent.type,
       timestamp: domainEvent.timestamp,
@@ -85,7 +77,6 @@ export class PersistenceLifecycleObserver implements PipelineLifecycleObserver {
         ...(event.result.stateMetadata ?? {}),
         ...behaviorPatch,
       },
-      historyEvent: legacyHistoryEvent,
       historyEvents: domainHistoryEvents,
     });