feat(orchestrator): add SSE events, queue controls, and mosaic rails sync

apps/orchestrator/src/api/agents/agents-killswitch.controller.spec.ts

@@ -4,6 +4,7 @@ import { QueueService } from "../../queue/queue.service";
 import { AgentSpawnerService } from "../../spawner/agent-spawner.service";
 import { AgentLifecycleService } from "../../spawner/agent-lifecycle.service";
 import { KillswitchService } from "../../killswitch/killswitch.service";
+import { AgentEventsService } from "./agent-events.service";
 import type { KillAllResult } from "../../killswitch/killswitch.service";
 
 describe("AgentsController - Killswitch Endpoints", () => {
@@ -20,6 +21,12 @@ describe("AgentsController - Killswitch Endpoints", () => {
   };
   let mockLifecycleService: {
     getAgentLifecycleState: ReturnType<typeof vi.fn>;
+    registerSpawnedAgent: ReturnType<typeof vi.fn>;
+  };
+  let mockEventsService: {
+    subscribe: ReturnType<typeof vi.fn>;
+    getInitialSnapshot: ReturnType<typeof vi.fn>;
+    createHeartbeat: ReturnType<typeof vi.fn>;
   };
 
   beforeEach(() => {
@@ -38,13 +45,30 @@ describe("AgentsController - Killswitch Endpoints", () => {
 
     mockLifecycleService = {
       getAgentLifecycleState: vi.fn(),
+      registerSpawnedAgent: vi.fn(),
+    };
+
+    mockEventsService = {
+      subscribe: vi.fn().mockReturnValue(() => {}),
+      getInitialSnapshot: vi.fn().mockResolvedValue({
+        type: "stream.snapshot",
+        timestamp: new Date().toISOString(),
+        agents: 0,
+        tasks: 0,
+      }),
+      createHeartbeat: vi.fn().mockReturnValue({
+        type: "task.processing",
+        timestamp: new Date().toISOString(),
+        data: { heartbeat: true },
+      }),
     };
 
     controller = new AgentsController(
       mockQueueService as unknown as QueueService,
       mockSpawnerService as unknown as AgentSpawnerService,
       mockLifecycleService as unknown as AgentLifecycleService,
-      mockKillswitchService as unknown as KillswitchService
+      mockKillswitchService as unknown as KillswitchService,
+      mockEventsService as unknown as AgentEventsService
     );
   });