feat(orchestrator): add recent events API and monitor script

apps/orchestrator/src/api/agents/agents.controller.ts

@@ -13,6 +13,7 @@ import {
   ParseUUIDPipe,
   Sse,
   MessageEvent,
+  Query,
 } from "@nestjs/common";
 import { Throttle } from "@nestjs/throttler";
 import { Observable } from "rxjs";
@@ -128,6 +129,20 @@ export class AgentsController {
     });
   }
 
+  /**
+   * Return recent orchestrator events for non-streaming consumers.
+   */
+  @Get("events/recent")
+  @Throttle({ status: { limit: 200, ttl: 60000 } })
+  getRecentEvents(@Query("limit") limit?: string): {
+    events: ReturnType<AgentEventsService["getRecentEvents"]>;
+  } {
+    const parsedLimit = Number.parseInt(limit ?? "100", 10);
+    return {
+      events: this.eventsService.getRecentEvents(Number.isNaN(parsedLimit) ? 100 : parsedLimit),
+    };
+  }
+
   /**
    * List all agents
    * @returns Array of all agent sessions with their status