v0.169.1: disk-health card excludes logical/network storage (pbs/lvm/nfs/cifs)

The agent defaults SMART to UNKNOWN on non-physical targets, so they showed as
spurious 'Nincs adat' rows. isPhysicalDisk now excludes those types (card + check).
Test strengthened: a PBS/LVM fixture with UNKNOWN SMART must still be excluded.

controller/internal/web/disk_health.go

@@ -62,9 +62,14 @@ func (s *Server) fetchDisks(ctx context.Context) (agentapi.DisksResponse, error)
 	return client.Disks(ctx)
 }
 
-// isPhysicalDisk reports whether a target is a physical disk SMART applies to (has a backing device
-// or a serialized SMART summary). pbs/lvm/nfs targets are excluded from the disk-health view.
+// isPhysicalDisk reports whether a target is a physical disk SMART applies to. Logical/network
+// storage (PBS, LVM-thin, NFS, CIFS) is excluded even though the agent may default its SMART to
+// UNKNOWN — those are storage abstractions, not disks, and must not clutter the disk-health card.
 func isPhysicalDisk(d agentapi.DiskInfo) bool {
+	switch d.Type {
+	case "pbs", "lvmthin", "nfs", "cifs":
+		return false
+	}
 	return d.BackingDevice != "" || d.Smart != nil
 }