feat(orchestrator): MS23-P0-004 operator inject/pause/resume endpoints (#712)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

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

@@ -14,6 +14,7 @@ import {
   Sse,
   MessageEvent,
   Query,
+  Request,
 } from "@nestjs/common";
 import type { AgentConversationMessage } from "@prisma/client";
 import { Throttle } from "@nestjs/throttler";
@@ -28,6 +29,9 @@ import { OrchestratorThrottlerGuard } from "../../common/guards/throttler.guard"
 import { AgentEventsService } from "./agent-events.service";
 import { GetMessagesQueryDto } from "./dto/get-messages-query.dto";
 import { AgentMessagesService } from "./agent-messages.service";
+import { AgentControlService } from "./agent-control.service";
+import { InjectAgentDto } from "./dto/inject-agent.dto";
+import { PauseAgentDto, ResumeAgentDto } from "./dto/control-agent.dto";
 
 /**
  * Controller for agent management endpoints
@@ -51,7 +55,8 @@ export class AgentsController {
     private readonly lifecycleService: AgentLifecycleService,
     private readonly killswitchService: KillswitchService,
     private readonly eventsService: AgentEventsService,
-    private readonly messagesService: AgentMessagesService
+    private readonly messagesService: AgentMessagesService,
+    private readonly agentControlService: AgentControlService
   ) {}
 
   /**
@@ -374,6 +379,57 @@ export class AgentsController {
     }
   }
 
+  @Post(":agentId/inject")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async injectAgentMessage(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() dto: InjectAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.injectMessage(agentId, operatorId, dto.message);
+
+    return {
+      message: `Message injected into agent ${agentId}`,
+    };
+  }
+
+  @Post(":agentId/pause")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async pauseAgent(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() _dto: PauseAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.pauseAgent(agentId, operatorId);
+
+    return {
+      message: `Agent ${agentId} paused`,
+    };
+  }
+
+  @Post(":agentId/resume")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async resumeAgent(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() _dto: ResumeAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.resumeAgent(agentId, operatorId);
+
+    return {
+      message: `Agent ${agentId} resumed`,
+    };
+  }
+
   /**
    * Kill all active agents
    * @returns Summary of kill operation