Fix USB/RAM status checks; add server model+S/N to dashboard; remove cycles

USB Export Drive:
  lsblk reports TRAN only for whole disks, not partitions (/dev/sdc1).
  Strip trailing partition digits to get parent disk before transport check.

LiveCD in RAM:
  When RunInstallToRAM copies squashfs to /dev/shm/bee-live/ but bind-mount
  of /run/live/medium fails (CD-ROM boots), /run/live/medium still shows the
  CD-ROM fstype. Add fallback: if /dev/shm/bee-live/*.squashfs exists, the
  data is in RAM — report status OK.

Dashboard Hardware Summary:
  Show server Manufacturer + ProductName as heading and S/N as subline above
  the component table, sourced from hw.Board (dmidecode system-type data).

Validate:
  Remove Cycles input — always run once. cycles=1 hardcoded in runAllSAT().

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

audit/internal/platform/runtime.go

@@ -244,11 +244,17 @@ func findUSBExportMount() string {
 		if readOnly {
 			continue
 		}
-		// Check USB transport via lsblk on the device
+		// Check USB transport via lsblk on the device (or its parent disk for partitions).
 		if !strings.HasPrefix(device, "/dev/") {
 			continue
 		}
-		if blockDeviceTransport(device) == "usb" {
+		checkDev := device
+		// lsblk only reports TRAN for the whole disk, not for partitions (e.g. /dev/sdc1).
+		// Strip trailing partition digits to get the parent disk name.
+		if trimmed := strings.TrimRight(device, "0123456789"); trimmed != device && len(trimmed) > len("/dev/") {
+			checkDev = trimmed
+		}
+		if blockDeviceTransport(checkDev) == "usb" {
 			return mountPoint
 		}
 	}