fix(export): keep storage inventory without serials

internal/exporter/reanimator_converter_test.go

@@ -447,20 +447,26 @@ func TestConvertStorage(t *testing.T) {
 			Slot:         "OB02",
 			Type:         "NVMe",
 			Model:        "INTEL SSDPF2KX076T1",
-			SerialNumber: "", // No serial - should be skipped
+			SerialNumber: "",
 			Present:      true,
 		},
 	}
 
 	result := convertStorage(storage, "2026-02-10T15:30:00Z")
 
-	if len(result) != 1 {
-		t.Fatalf("expected 1 storage device (skipped one without serial), got %d", len(result))
+	if len(result) != 2 {
+		t.Fatalf("expected both inventory slots to be exported, got %d", len(result))
 	}
 
 	if result[0].Status != "Unknown" {
 		t.Errorf("expected Unknown status, got %q", result[0].Status)
 	}
+	if result[1].SerialNumber != "" {
+		t.Errorf("expected empty serial for second storage slot, got %q", result[1].SerialNumber)
+	}
+	if result[1].Present == nil || !*result[1].Present {
+		t.Fatalf("expected present=true to be preserved for populated slot without serial")
+	}
 }
 
 func TestConvertToReanimator_SkipsAMIVirtualStorageDevices(t *testing.T) {
@@ -994,6 +1000,52 @@ func TestConvertToReanimator_StatusFallbackUsesCollectedAt(t *testing.T) {
 	}
 }
 
+func TestConvertToReanimator_ExportsStorageInventoryWithoutSerial(t *testing.T) {
+	collectedAt := time.Date(2026, 4, 1, 9, 0, 0, 0, time.UTC)
+	input := &models.AnalysisResult{
+		Filename:    "nvme-inventory.json",
+		CollectedAt: collectedAt,
+		Hardware: &models.HardwareConfig{
+			BoardInfo: models.BoardInfo{SerialNumber: "BOARD-001"},
+			Storage: []models.Storage{
+				{
+					Slot:         "OB01",
+					Type:         "NVMe",
+					Model:        "PM9A3",
+					SerialNumber: "SSD-001",
+					Present:      true,
+				},
+				{
+					Slot:    "OB02",
+					Type:    "NVMe",
+					Model:   "PM9A3",
+					Present: true,
+				},
+				{
+					Slot:    "OB03",
+					Type:    "NVMe",
+					Model:   "PM9A3",
+					Present: false,
+				},
+			},
+		},
+	}
+
+	out, err := ConvertToReanimator(input)
+	if err != nil {
+		t.Fatalf("ConvertToReanimator() failed: %v", err)
+	}
+	if len(out.Hardware.Storage) != 3 {
+		t.Fatalf("expected 3 storage entries including inventory slots without serial, got %d", len(out.Hardware.Storage))
+	}
+	if out.Hardware.Storage[1].Slot != "OB02" || out.Hardware.Storage[1].SerialNumber != "" {
+		t.Fatalf("expected OB02 storage slot without serial to survive export, got %#v", out.Hardware.Storage[1])
+	}
+	if out.Hardware.Storage[2].Present == nil || *out.Hardware.Storage[2].Present {
+		t.Fatalf("expected OB03 to preserve present=false, got %#v", out.Hardware.Storage[2])
+	}
+}
+
 func TestConvertToReanimator_FirmwareExcludesDeviceBoundEntries(t *testing.T) {
 	input := &models.AnalysisResult{
 		Filename: "fw-filter-test.json",