MEM-01: OOM kill detection via dmesg checks every 5 minutes
MEM-03: Disk growth rate tracking (288 samples over 24h), warns at >1GB/day
MEM-04: Systemd watchdog (WatchdogSec=60, sd_notify::Watchdog every 30s)
Service Type=notify for proper startup notification
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>