v0.171.0: disk-health card device-model label (pairs with agent v0.95.0)

agentapi.SmartSummary.ModelName mirrors the agent's model_name; the card row label
prefers the device model over the raw name/UUID, falling back to Name(+hint) on an
old agent. Additive. Test + red-proof (drop fallback -> A4 fails).

controller/internal/web/disk_health.go

@@ -75,6 +75,11 @@ func isPhysicalDisk(d agentapi.DiskInfo) bool {
 
 // diskDisplayLabel is the customer-facing disk label (PVE name + a Hungarian speed hint when known).
 func diskDisplayLabel(d agentapi.DiskInfo) string {
+	// Prefer the device model (agent v0.95.0) over the raw storage name/UUID — a customer reads
+	// "TOSHIBA MQ04ABF100", not "47a3361a-…". Falls back to Name (+ speed hint) on an older agent.
+	if d.Smart != nil && d.Smart.ModelName != nil && *d.Smart.ModelName != "" {
+		return *d.Smart.ModelName
+	}
 	switch d.Class {
 	case "fast":
 		return d.Name + " (gyors)"