fix: cap NATS JetStream streams to prevent OOM crash

WIRELESS_REGISTRATIONS stream had a 256MB MaxBytes cap in a 256MB
container — guaranteed to crash under load. ALERT_EVENTS and
OPERATION_EVENTS had no byte limit at all.

- Reduce WIRELESS_REGISTRATIONS MaxBytes from 256MB to 128MB
- Add 16MB MaxBytes cap to ALERT_EVENTS and OPERATION_EVENTS
- Bump NATS container memory limit from 256MB to 384MB
- Add restart: unless-stopped to NATS in base compose
- Bump version to 9.8.2

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

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "frontend",
   "private": true,
-  "version": "9.8.1",
+  "version": "9.8.2",
   "type": "module",
   "scripts": {
     "dev": "vite",