feat(ai-runtime): complete ai runtime policy refactor (ADR-035)

backend/src/config/bullmq.config.ts

@@ -2,6 +2,7 @@
 // Change Log:
 // - 2026-05-13: Add BullMQ config registry for reminder and distribution queues.
 // - 2026-05-15: เพิ่ม config สำหรับ ai-realtime และ ai-batch ตาม ADR-023A.
+// - 2026-06-11: ปรับ aiRealtimeQueue.concurrency ให้รองรับ AI_REALTIME_CONCURRENCY / REALTIME_CONCURRENCY
 
 import { registerAs } from '@nestjs/config';
 
@@ -12,7 +13,11 @@ export default registerAs('bullmq', () => ({
     process.env.BULLMQ_DISTRIBUTION_QUEUE || 'rfa-distribution',
   aiRealtimeQueue: {
     name: process.env.BULLMQ_AI_REALTIME_QUEUE || 'ai-realtime',
-    concurrency: 1,
+    concurrency: Number(
+      process.env.AI_REALTIME_CONCURRENCY ||
+        process.env.REALTIME_CONCURRENCY ||
+        '2'
+    ),
     defaultJobOptions: {
       attempts: 3,
       backoff: { type: 'exponential', delay: 2000 },