feat: Phase 2 — missed call queue ingestion, auto-assignment, endpoints

- MissedQueueService: polls Ozonetel abandonCalls every 30s, dedup by phone
- Auto-assigns oldest PENDING_CALLBACK call on agent Ready (dispose + state change)
- GET /api/worklist/missed-queue, PATCH /api/worklist/missed-queue/:id/status
- Worklist query updated with callback fields and FIFO ordering
- PlatformGraphqlService.query() made public for server-to-server ops
- forwardRef circular dependency resolution between WorklistModule and OzonetelAgentModule

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/worklist/worklist.module.ts

@@ -1,13 +1,16 @@
-import { Module } from '@nestjs/common';
+import { Module, forwardRef } from '@nestjs/common';
 import { PlatformModule } from '../platform/platform.module';
+import { OzonetelAgentModule } from '../ozonetel/ozonetel-agent.module';
 import { WorklistController } from './worklist.controller';
 import { WorklistService } from './worklist.service';
+import { MissedQueueService } from './missed-queue.service';
 import { MissedCallWebhookController } from './missed-call-webhook.controller';
 import { KookooCallbackController } from './kookoo-callback.controller';
 
 @Module({
-    imports: [PlatformModule],
+    imports: [PlatformModule, forwardRef(() => OzonetelAgentModule)],
     controllers: [WorklistController, MissedCallWebhookController, KookooCallbackController],
-    providers: [WorklistService],
+    providers: [WorklistService, MissedQueueService],
+    exports: [MissedQueueService],
 })
 export class WorklistModule {}