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/config/configuration.ts

@@ -12,6 +12,9 @@ export default () => ({
         subdomain: process.env.EXOTEL_SUBDOMAIN ?? 'api.exotel.com',
         webhookSecret: process.env.EXOTEL_WEBHOOK_SECRET ?? '',
     },
+    missedQueue: {
+        pollIntervalMs: parseInt(process.env.MISSED_QUEUE_POLL_INTERVAL_MS ?? '30000', 10),
+    },
     ai: {
         provider: process.env.AI_PROVIDER ?? 'openai',
         anthropicApiKey: process.env.ANTHROPIC_API_KEY ?? '',