feat: add udev serial detection, comprehensive logging, and SAT fallback for SMART health checks on RAID disks

Install udev package and mount /run/udev:/host-run-udev:ro for udev by-id symlink access. Add raid_log_state global to track RAID status changes and hardware_log_once set to prevent duplicate hardware warnings. Update scan_datastore_storage() with info/error logging for scan lifecycle and disk usage. Add _read_command() debug/warning/error logging for all subprocess calls with command text

docker-compose.yml

@@ -27,6 +27,7 @@ services:
       - /dev:/host-dev:ro
       # Read-only Hardware-Metadaten für Seriennummern und SMART-Zuordnung.
       - /sys:/host-sys:ro
+      - /run/udev:/host-run-udev:ro
       - ./data:/data
     networks:
       - media