redfish: MSI support, fix zero dates, BMC MAC, Assembly FRU, crawler cleanup

- Add MSI CG480-S5063 (H100 SXM5) support:
  - collectGPUsFromProcessors: find GPUs via Processors/ProcessorType=GPU,
    resolve serials from Chassis/<GpuId>
  - looksLikeGPU: skip Description="Display Device" PCIe sidecars
  - isVirtualStorageDrive: filter AMI virtual USB drives (0-byte)
  - enrichNICMACsFromNetworkDeviceFunctions: pull MACs for MSI NICs
  - parseCPUs: filter by ProcessorType, parse Socket, L1/L2/L3 from ProcessorMemory
  - parseMemory: Location.PartLocation.ServiceLabel slot fallback
  - shouldCrawlPath: block /SubProcessors subtrees
- Fix status_checked_at/status_changed_at serializing as 0001-01-01:
  change all StatusCheckedAt/StatusChangedAt fields to *time.Time
- Redfish crawler cleanup:
  - Block non-inventory branches: AccountService, CertificateService,
    EventService, Registries, SessionService, TaskService, manager config paths,
    OperatingConfigs, BootOptions, HostPostCode, Bios/Settings, OEM KVM paths
  - Add Assembly to critical endpoints (FRU data)
  - Remove BootOptions from priority seeds
- collectBMCMAC: read BMC MAC from Managers/*/EthernetInterfaces
- collectAssemblyFRU: extract FRU serial/part from Chassis/*/Assembly
- Firmware: remove NetworkProtocol noise, fix SecureBoot field,
  filter BMCImageN redundant backup slots

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

internal/collector/redfish.go

@@ -1427,6 +1427,7 @@ func redfishCriticalEndpoints(systemPaths, chassisPaths, managerPaths []string)
 		add(joinPath(p, "/PCIeDevices"))
 		add(joinPath(p, "/Accelerators"))
 		add(joinPath(p, "/Drives"))
+		add(joinPath(p, "/Assembly"))
 	}
 	for _, p := range managerPaths {
 		add(p)
@@ -1916,6 +1917,58 @@ func shouldCrawlPath(path string) bool {
 			return false
 		}
 	}
+	// Non-inventory top-level service branches.
+	for _, prefix := range []string{
+		"/redfish/v1/AccountService",
+		"/redfish/v1/CertificateService",
+		"/redfish/v1/EventService",
+		"/redfish/v1/Registries",
+		"/redfish/v1/SessionService",
+		"/redfish/v1/TaskService",
+	} {
+		if strings.HasPrefix(normalized, prefix) {
+			return false
+		}
+	}
+	// Manager-specific configuration paths (not hardware inventory).
+	if strings.Contains(normalized, "/Managers/") {
+		for _, part := range []string{
+			"/FirewallRules",
+			"/KvmService",
+			"/LldpService",
+			"/SecurityService",
+			"/SmtpService",
+			"/SnmpService",
+			"/SyslogService",
+			"/VirtualMedia",
+			"/VncService",
+			"/Certificates",
+		} {
+			if strings.Contains(normalized, part) {
+				return false
+			}
+		}
+	}
+	// Per-CPU operating frequency configurations — not hardware inventory.
+	if strings.HasSuffix(normalized, "/OperatingConfigs") {
+		return false
+	}
+	// Per-core/thread sub-processors — inventory is captured at the top processor level.
+	if strings.Contains(normalized, "/SubProcessors") {
+		return false
+	}
+	// Non-inventory system endpoints.
+	for _, part := range []string{
+		"/BootOptions",
+		"/HostPostCode",
+		"/Bios/Settings",
+		"/GetServerAllUSBStatus",
+		"/Oem/Public/KVM",
+	} {
+		if strings.Contains(normalized, part) {
+			return false
+		}
+	}
 	heavyParts := []string{
 		"/JsonSchemas",
 		"/LogServices/",
@@ -2435,24 +2488,76 @@ func findFirstNormalizedStringByKeys(doc map[string]interface{}, keys ...string)
 
 func parseCPUs(docs []map[string]interface{}) []models.CPU {
 	cpus := make([]models.CPU, 0, len(docs))
-	for idx, doc := range docs {
+	socketIdx := 0
+	for _, doc := range docs {
+		// Skip non-CPU processors (GPUs, FPGAs, etc.) that some BMCs list in the
+		// same Processors collection.
+		if pt := strings.TrimSpace(asString(doc["ProcessorType"])); pt != "" &&
+			!strings.EqualFold(pt, "CPU") && !strings.EqualFold(pt, "General") {
+			continue
+		}
+		socket := socketIdx
+		socketIdx++
+		if s := strings.TrimSpace(asString(doc["Socket"])); s != "" {
+			// Parse numeric suffix from labels like "CPU0", "Processor 1", etc.
+			trimmed := strings.TrimLeft(strings.ToUpper(s), "ABCDEFGHIJKLMNOPQRSTUVWXYZ _")
+			if n, err := strconv.Atoi(trimmed); err == nil {
+				socket = n
+			}
+		}
+		l1, l2, l3 := parseCPUCachesFromProcessorMemory(doc)
 		cpus = append(cpus, models.CPU{
-			Socket:       idx,
+			Socket:       socket,
 			Model:        firstNonEmpty(asString(doc["Model"]), asString(doc["Name"])),
 			Cores:        asInt(doc["TotalCores"]),
 			Threads:      asInt(doc["TotalThreads"]),
 			FrequencyMHz: asInt(doc["OperatingSpeedMHz"]),
 			MaxFreqMHz:   asInt(doc["MaxSpeedMHz"]),
 			SerialNumber: findFirstNormalizedStringByKeys(doc, "SerialNumber"),
+			L1CacheKB:    l1,
+			L2CacheKB:    l2,
+			L3CacheKB:    l3,
+			Status:       mapStatus(doc["Status"]),
 		})
 	}
 	return cpus
 }
 
+// parseCPUCachesFromProcessorMemory reads L1/L2/L3 cache sizes from the
+// Redfish ProcessorMemory array (Processor.v1_x spec).
+func parseCPUCachesFromProcessorMemory(doc map[string]interface{}) (l1, l2, l3 int) {
+	mem, _ := doc["ProcessorMemory"].([]interface{})
+	for _, mAny := range mem {
+		m, ok := mAny.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		capMiB := asInt(m["CapacityMiB"])
+		if capMiB == 0 {
+			continue
+		}
+		capKB := capMiB * 1024
+		switch strings.ToUpper(strings.TrimSpace(asString(m["MemoryType"]))) {
+		case "L1CACHE":
+			l1 = capKB
+		case "L2CACHE":
+			l2 = capKB
+		case "L3CACHE":
+			l3 = capKB
+		}
+	}
+	return
+}
+
 func parseMemory(docs []map[string]interface{}) []models.MemoryDIMM {
 	out := make([]models.MemoryDIMM, 0, len(docs))
 	for _, doc := range docs {
-		slot := firstNonEmpty(asString(doc["DeviceLocator"]), asString(doc["Name"]), asString(doc["Id"]))
+		slot := firstNonEmpty(
+			asString(doc["DeviceLocator"]),
+			redfishLocationLabel(doc["Location"]),
+			asString(doc["Name"]),
+			asString(doc["Id"]),
+		)
 		present := true
 		if strings.EqualFold(asString(doc["Status"]), "Absent") {
 			present = false
@@ -3154,6 +3259,12 @@ func hasMergedPlaceholderIndex(indexes map[int]struct{}, idx int) bool {
 }
 
 func looksLikeGPU(doc map[string]interface{}, functionDocs []map[string]interface{}) bool {
+	// "Display Device" is how MSI labels H100 secondary display/audio controller
+	// functions — these are not compute GPUs and should be excluded.
+	if strings.EqualFold(strings.TrimSpace(asString(doc["Description"])), "Display Device") {
+		return false
+	}
+
 	deviceType := strings.ToLower(asString(doc["DeviceType"]))
 	if strings.Contains(deviceType, "gpu") || strings.Contains(deviceType, "graphics") || strings.Contains(deviceType, "accelerator") {
 		return true
@@ -3192,6 +3303,20 @@ func looksLikeGPU(doc map[string]interface{}, functionDocs []map[string]interfac
 	return false
 }
 
+// isVirtualStorageDrive returns true for BMC-virtual drives that should not
+// appear in hardware inventory (e.g. AMI virtual CD/USB sticks with 0 capacity).
+func isVirtualStorageDrive(doc map[string]interface{}) bool {
+	if strings.EqualFold(asString(doc["Protocol"]), "USB") && asInt64(doc["CapacityBytes"]) == 0 {
+		return true
+	}
+	mfr := strings.ToUpper(strings.TrimSpace(asString(doc["Manufacturer"])))
+	model := strings.ToUpper(strings.TrimSpace(asString(doc["Model"])))
+	if strings.Contains(mfr, "AMI") && strings.Contains(model, "VIRTUAL") {
+		return true
+	}
+	return false
+}
+
 func looksLikeDrive(doc map[string]interface{}) bool {
 	if asString(doc["MediaType"]) != "" {
 		return true
@@ -3951,8 +4076,7 @@ func parseFirmware(system, bios, manager, secureBoot, networkProtocol map[string
 	appendFW("BIOS", asString(system["BiosVersion"]))
 	appendFW("BIOS", asString(bios["Version"]))
 	appendFW("BMC", asString(manager["FirmwareVersion"]))
-	appendFW("SecureBoot", asString(secureBoot["SecureBootCurrentBoot"]))
-	appendFW("NetworkProtocol", asString(networkProtocol["Id"]))
+	appendFW("SecureBoot", asString(secureBoot["SecureBootMode"]))
 
 	return out
 }
@@ -4441,7 +4565,6 @@ func redfishSnapshotPrioritySeeds(systemPaths, chassisPaths, managerPaths []stri
 		add(joinPath(p, "/Memory"))
 		add(joinPath(p, "/EthernetInterfaces"))
 		add(joinPath(p, "/NetworkInterfaces"))
-		add(joinPath(p, "/BootOptions"))
 		add(joinPath(p, "/PCIeDevices"))
 		add(joinPath(p, "/PCIeFunctions"))
 		add(joinPath(p, "/Accelerators"))

internal/collector/redfish_replay.go

@@ -72,6 +72,7 @@ func ReplayRedfishFromRawPayloads(rawPayloads map[string]any, emit ProgressFn) (
 	psus := r.collectPSUs(chassisPaths)
 	pcieDevices := r.collectPCIeDevices(systemPaths, chassisPaths)
 	gpus := r.collectGPUs(systemPaths, chassisPaths)
+	gpus = r.collectGPUsFromProcessors(systemPaths, chassisPaths, gpus)
 	nics := r.collectNICs(chassisPaths)
 	r.enrichNICsFromNetworkInterfaces(&nics, systemPaths)
 	thresholdSensors := r.collectThresholdSensors(chassisPaths)
@@ -86,13 +87,15 @@ func ReplayRedfishFromRawPayloads(rawPayloads map[string]any, emit ProgressFn) (
 	firmware = dedupeFirmwareInfo(append(firmware, r.collectFirmwareInventory()...))
 	boardInfo := parseBoardInfoWithFallback(systemDoc, chassisDoc, fruDoc)
 	applyBoardInfoFallbackFromDocs(&boardInfo, boardFallbackDocs)
+	boardInfo.BMCMACAddress = r.collectBMCMAC(managerPaths)
+	assemblyFRU := r.collectAssemblyFRU(chassisPaths)
 	collectedAt, sourceTimezone := inferRedfishCollectionTime(managerDoc, rawPayloads)
 
 	result := &models.AnalysisResult{
 		CollectedAt: collectedAt,
 		SourceTimezone: sourceTimezone,
 		Events:      append(append(append(make([]models.Event, 0, len(discreteEvents)+len(healthEvents)+len(driveFetchWarningEvents)+1), healthEvents...), discreteEvents...), driveFetchWarningEvents...),
-		FRU:         make([]models.FRUInfo, 0),
+		FRU:         assemblyFRU,
 		Sensors:     dedupeSensorReadings(append(append(thresholdSensors, thermalSensors...), powerSensors...)),
 		RawPayloads: cloneRawPayloads(rawPayloads),
 		Hardware: &models.HardwareConfig{
@@ -274,7 +277,12 @@ func (r redfishSnapshotReader) collectFirmwareInventory() []models.FirmwareInfo
 			asString(doc["Name"]),
 			asString(doc["Id"]),
 		)
-		if strings.TrimSpace(name) == "" {
+		name = strings.TrimSpace(name)
+		if name == "" {
+			continue
+		}
+		// BMCImageN entries are redundant backup slot labels; skip them.
+		if strings.HasPrefix(strings.ToLower(name), "bmcimage") {
 			continue
 		}
 		out = append(out, models.FirmwareInfo{DeviceName: name, Version: version})
@@ -977,7 +985,9 @@ func (r redfishSnapshotReader) collectStorage(systemPath string) []models.Storag
 				driveDocs, err := r.getCollectionMembers(driveCollectionPath)
 				if err == nil {
 					for _, driveDoc := range driveDocs {
-						out = append(out, parseDrive(driveDoc))
+						if !isVirtualStorageDrive(driveDoc) {
+							out = append(out, parseDrive(driveDoc))
+						}
 					}
 					if len(driveDocs) == 0 {
 						for _, driveDoc := range r.probeDirectDiskBayChildren(driveCollectionPath) {
@@ -1002,7 +1012,9 @@ func (r redfishSnapshotReader) collectStorage(systemPath string) []models.Storag
 				if err != nil {
 					continue
 				}
-				out = append(out, parseDrive(driveDoc))
+				if !isVirtualStorageDrive(driveDoc) {
+					out = append(out, parseDrive(driveDoc))
+				}
 			}
 			continue
 		}
@@ -1154,6 +1166,10 @@ func (r redfishSnapshotReader) collectNICs(chassisPaths []string) []models.Netwo
 				functionDocs := r.getLinkedPCIeFunctions(pcieDoc)
 				enrichNICFromPCIe(&nic, pcieDoc, functionDocs)
 			}
+			// Collect MACs from NetworkDeviceFunctions when not found via PCIe path.
+			if len(nic.MACAddresses) == 0 {
+				r.enrichNICMACsFromNetworkDeviceFunctions(&nic, doc)
+			}
 			nics = append(nics, nic)
 		}
 	}
@@ -1268,3 +1284,237 @@ func stringsTrimTrailingSlash(s string) string {
 	}
 	return s
 }
+
+// collectBMCMAC returns the MAC address of the first active BMC management
+// interface found in Managers/*/EthernetInterfaces. Returns empty string if
+// no MAC is available.
+func (r redfishSnapshotReader) collectBMCMAC(managerPaths []string) string {
+	for _, managerPath := range managerPaths {
+		members, err := r.getCollectionMembers(joinPath(managerPath, "/EthernetInterfaces"))
+		if err != nil || len(members) == 0 {
+			continue
+		}
+		for _, doc := range members {
+			mac := strings.TrimSpace(firstNonEmpty(
+				asString(doc["PermanentMACAddress"]),
+				asString(doc["MACAddress"]),
+			))
+			if mac == "" || strings.EqualFold(mac, "00:00:00:00:00:00") {
+				continue
+			}
+			return strings.ToUpper(mac)
+		}
+	}
+	return ""
+}
+
+// collectAssemblyFRU reads Chassis/*/Assembly documents and returns FRU entries
+// for subcomponents (backplanes, PSUs, DIMMs, etc.) that carry meaningful
+// serial or part numbers. Entries already present in dedicated collections
+// (PSUs, DIMMs) are included here as well so that all FRU data is available
+// in one place; deduplication by serial is performed.
+func (r redfishSnapshotReader) collectAssemblyFRU(chassisPaths []string) []models.FRUInfo {
+	seen := make(map[string]struct{})
+	var out []models.FRUInfo
+
+	add := func(fru models.FRUInfo) {
+		key := strings.ToUpper(strings.TrimSpace(fru.SerialNumber))
+		if key == "" {
+			key = strings.ToUpper(strings.TrimSpace(fru.Description + "|" + fru.PartNumber))
+		}
+		if key == "" || key == "|" {
+			return
+		}
+		if _, ok := seen[key]; ok {
+			return
+		}
+		seen[key] = struct{}{}
+		out = append(out, fru)
+	}
+
+	for _, chassisPath := range chassisPaths {
+		doc, err := r.getJSON(joinPath(chassisPath, "/Assembly"))
+		if err != nil || len(doc) == 0 {
+			continue
+		}
+		assemblies, _ := doc["Assemblies"].([]interface{})
+		for _, aAny := range assemblies {
+			a, ok := aAny.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			name := strings.TrimSpace(firstNonEmpty(asString(a["Name"]), asString(a["Description"])))
+			model := strings.TrimSpace(asString(a["Model"]))
+			partNumber := strings.TrimSpace(asString(a["PartNumber"]))
+			serial := extractAssemblySerial(a)
+
+			if serial == "" && partNumber == "" {
+				continue
+			}
+			add(models.FRUInfo{
+				Description:  name,
+				ProductName:  model,
+				SerialNumber: serial,
+				PartNumber:   partNumber,
+			})
+		}
+	}
+	return out
+}
+
+// extractAssemblySerial tries to find a serial number in an Assembly entry.
+// Standard Redfish Assembly has no top-level SerialNumber; vendors put it in Oem.
+func extractAssemblySerial(a map[string]interface{}) string {
+	// Some implementations expose it at top level.
+	if s := strings.TrimSpace(asString(a["SerialNumber"])); s != "" {
+		return s
+	}
+	// Dig into Oem for vendor-specific structures (e.g. Huawei COMMONb).
+	oem, _ := a["Oem"].(map[string]interface{})
+	for _, v := range oem {
+		subtree, ok := v.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		for _, v2 := range subtree {
+			node, ok := v2.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			if s := strings.TrimSpace(asString(node["SerialNumber"])); s != "" {
+				return s
+			}
+		}
+	}
+	return ""
+}
+
+// enrichNICMACsFromNetworkDeviceFunctions reads the NetworkDeviceFunctions
+// collection linked from a NetworkAdapter document and populates the NIC's
+// MACAddresses from each function's Ethernet.PermanentMACAddress / MACAddress.
+// Called when PCIe-path enrichment does not produce any MACs.
+func (r redfishSnapshotReader) enrichNICMACsFromNetworkDeviceFunctions(nic *models.NetworkAdapter, adapterDoc map[string]interface{}) {
+	ndfCol, ok := adapterDoc["NetworkDeviceFunctions"].(map[string]interface{})
+	if !ok {
+		return
+	}
+	colPath := asString(ndfCol["@odata.id"])
+	if colPath == "" {
+		return
+	}
+	funcDocs, err := r.getCollectionMembers(colPath)
+	if err != nil || len(funcDocs) == 0 {
+		return
+	}
+	for _, fn := range funcDocs {
+		eth, _ := fn["Ethernet"].(map[string]interface{})
+		if eth == nil {
+			continue
+		}
+		mac := strings.TrimSpace(firstNonEmpty(
+			asString(eth["PermanentMACAddress"]),
+			asString(eth["MACAddress"]),
+		))
+		if mac == "" {
+			continue
+		}
+		nic.MACAddresses = dedupeStrings(append(nic.MACAddresses, strings.ToUpper(mac)))
+	}
+	if len(funcDocs) > 0 && nic.PortCount == 0 {
+		nic.PortCount = sanitizeNetworkPortCount(len(funcDocs))
+	}
+}
+
+// collectGPUsFromProcessors finds GPUs that some BMCs (e.g. MSI) expose as
+// Processor entries with ProcessorType=GPU rather than as PCIe devices.
+// It supplements the existing gpus slice (already found via PCIe path),
+// skipping entries already present by UUID or SerialNumber.
+// Serial numbers are looked up from Chassis members named after each GPU Id.
+func (r redfishSnapshotReader) collectGPUsFromProcessors(systemPaths, chassisPaths []string, existing []models.GPU) []models.GPU {
+	// Build a lookup: chassis member ID → chassis doc (for serial numbers).
+	chassisByID := make(map[string]map[string]interface{})
+	for _, cp := range chassisPaths {
+		doc, err := r.getJSON(cp)
+		if err != nil || len(doc) == 0 {
+			continue
+		}
+		id := strings.TrimSpace(asString(doc["Id"]))
+		if id != "" {
+			chassisByID[strings.ToUpper(id)] = doc
+		}
+	}
+
+	// Build dedup sets from existing GPUs.
+	seenUUID := make(map[string]struct{})
+	seenSerial := make(map[string]struct{})
+	for _, g := range existing {
+		if u := strings.ToUpper(strings.TrimSpace(g.UUID)); u != "" {
+			seenUUID[u] = struct{}{}
+		}
+		if s := strings.ToUpper(strings.TrimSpace(g.SerialNumber)); s != "" {
+			seenSerial[s] = struct{}{}
+		}
+	}
+
+	out := append([]models.GPU{}, existing...)
+	idx := len(existing) + 1
+
+	for _, systemPath := range systemPaths {
+		procDocs, err := r.getCollectionMembers(joinPath(systemPath, "/Processors"))
+		if err != nil {
+			continue
+		}
+		for _, doc := range procDocs {
+			if !strings.EqualFold(strings.TrimSpace(asString(doc["ProcessorType"])), "GPU") {
+				continue
+			}
+
+			// Resolve serial from Chassis/<Id>.
+			gpuID := strings.TrimSpace(asString(doc["Id"]))
+			serial := ""
+			if chassisDoc, ok := chassisByID[strings.ToUpper(gpuID)]; ok {
+				serial = strings.TrimSpace(asString(chassisDoc["SerialNumber"]))
+			}
+
+			uuid := strings.TrimSpace(asString(doc["UUID"]))
+			uuidKey := strings.ToUpper(uuid)
+			serialKey := strings.ToUpper(serial)
+
+			if uuidKey != "" {
+				if _, dup := seenUUID[uuidKey]; dup {
+					continue
+				}
+				seenUUID[uuidKey] = struct{}{}
+			}
+			if serialKey != "" {
+				if _, dup := seenSerial[serialKey]; dup {
+					continue
+				}
+				seenSerial[serialKey] = struct{}{}
+			}
+
+			slotLabel := firstNonEmpty(
+				redfishLocationLabel(doc["Location"]),
+				redfishLocationLabel(doc["PhysicalLocation"]),
+			)
+			if slotLabel == "" && gpuID != "" {
+				slotLabel = gpuID
+			}
+			if slotLabel == "" {
+				slotLabel = fmt.Sprintf("GPU%d", idx)
+			}
+
+			out = append(out, models.GPU{
+				Slot:         slotLabel,
+				Model:        firstNonEmpty(asString(doc["Model"]), asString(doc["Name"])),
+				Manufacturer: asString(doc["Manufacturer"]),
+				PartNumber:   asString(doc["PartNumber"]),
+				SerialNumber: serial,
+				UUID:         uuid,
+				Status:       mapStatus(doc["Status"]),
+			})
+			idx++
+		}
+	}
+	return out
+}

internal/exporter/reanimator_converter.go

@@ -385,10 +385,10 @@ func mergeCanonicalDevice(primary, secondary models.HardwareDevice) models.Hardw
 	fillFloat(&primary.InputVoltage, secondary.InputVoltage)
 	fillInt(&primary.TemperatureC, secondary.TemperatureC)
 	fillString(&primary.Status, secondary.Status)
-	if primary.StatusCheckedAt.IsZero() && !secondary.StatusCheckedAt.IsZero() {
+	if primary.StatusCheckedAt == nil && secondary.StatusCheckedAt != nil {
 		primary.StatusCheckedAt = secondary.StatusCheckedAt
 	}
-	if primary.StatusChangedAt.IsZero() && !secondary.StatusChangedAt.IsZero() {
+	if primary.StatusChangedAt == nil && secondary.StatusChangedAt != nil {
 		primary.StatusChangedAt = secondary.StatusChangedAt
 	}
 	if primary.StatusAtCollect == nil && secondary.StatusAtCollect != nil {
@@ -1130,8 +1130,8 @@ type convertedStatusMeta struct {
 
 func buildStatusMeta(
 	currentStatus string,
-	checkedAt time.Time,
-	changedAt time.Time,
+	checkedAt *time.Time,
+	changedAt *time.Time,
 	statusAtCollection *models.StatusAtCollection,
 	history []models.StatusHistoryEntry,
 	errorDescription string,
@@ -1145,7 +1145,7 @@ func buildStatusMeta(
 
 	convertedHistory := make([]ReanimatorStatusHistoryEntry, 0, len(history))
 	for _, h := range history {
-		changed := formatOptionalRFC3339(h.ChangedAt)
+		changed := formatOptionalRFC3339(&h.ChangedAt)
 		if changed == "" {
 			continue
 		}
@@ -1166,7 +1166,7 @@ func buildStatusMeta(
 	}
 
 	if statusAtCollection != nil {
-		at := formatOptionalRFC3339(statusAtCollection.At)
+		at := formatOptionalRFC3339(&statusAtCollection.At)
 		if at != "" && strings.TrimSpace(statusAtCollection.Status) != "" {
 			meta.StatusAtCollection = &ReanimatorStatusAtCollection{
 				Status: normalizeStatus(statusAtCollection.Status, true),
@@ -1191,8 +1191,8 @@ func buildStatusMeta(
 	return meta
 }
 
-func formatOptionalRFC3339(t time.Time) string {
-	if t.IsZero() {
+func formatOptionalRFC3339(t *time.Time) string {
+	if t == nil || t.IsZero() {
 		return ""
 	}
 	return t.UTC().Format(time.RFC3339)

internal/models/models.go

@@ -148,8 +148,8 @@ type HardwareDevice struct {
 	TemperatureC int      `json:"temperature_c,omitempty"`
 	Status       string   `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time           `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time           `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -167,13 +167,14 @@ type FirmwareInfo struct {
 
 // BoardInfo represents motherboard/system information
 type BoardInfo struct {
-	Manufacturer string `json:"manufacturer,omitempty"`
-	ProductName  string `json:"product_name,omitempty"`
-	Description  string `json:"description,omitempty"`
-	SerialNumber string `json:"serial_number,omitempty"`
-	PartNumber   string `json:"part_number,omitempty"`
-	Version      string `json:"version,omitempty"`
-	UUID         string `json:"uuid,omitempty"`
+	Manufacturer    string `json:"manufacturer,omitempty"`
+	ProductName     string `json:"product_name,omitempty"`
+	Description     string `json:"description,omitempty"`
+	SerialNumber    string `json:"serial_number,omitempty"`
+	PartNumber      string `json:"part_number,omitempty"`
+	Version         string `json:"version,omitempty"`
+	UUID            string `json:"uuid,omitempty"`
+	BMCMACAddress   string `json:"bmc_mac_address,omitempty"`
 }
 
 // CPU represents processor information
@@ -193,8 +194,8 @@ type CPU struct {
 	SerialNumber string `json:"serial_number,omitempty"`
 	Status       string `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -217,8 +218,8 @@ type MemoryDIMM struct {
 	Status          string `json:"status,omitempty"`
 	Ranks           int    `json:"ranks,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -240,8 +241,8 @@ type Storage struct {
 	BackplaneID  int    `json:"backplane_id,omitempty"`
 	Status       string `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -278,8 +279,8 @@ type PCIeDevice struct {
 	MACAddresses []string `json:"mac_addresses,omitempty"`
 	Status       string   `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -314,8 +315,8 @@ type PSU struct {
 	OutputVoltage float64 `json:"output_voltage,omitempty"`
 	TemperatureC  int     `json:"temperature_c,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -352,8 +353,8 @@ type GPU struct {
 	CurrentLinkSpeed string `json:"current_link_speed,omitempty"`
 	Status           string `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`
@@ -377,8 +378,8 @@ type NetworkAdapter struct {
 	MACAddresses []string `json:"mac_addresses,omitempty"`
 	Status       string   `json:"status,omitempty"`
 
-	StatusCheckedAt  time.Time            `json:"status_checked_at,omitempty"`
-	StatusChangedAt  time.Time            `json:"status_changed_at,omitempty"`
+	StatusCheckedAt  *time.Time            `json:"status_checked_at,omitempty"`
+	StatusChangedAt  *time.Time            `json:"status_changed_at,omitempty"`
 	StatusAtCollect  *StatusAtCollection  `json:"status_at_collection,omitempty"`
 	StatusHistory    []StatusHistoryEntry `json:"status_history,omitempty"`
 	ErrorDescription string               `json:"error_description,omitempty"`

internal/parser/vendors/inspur/gpu_status.go

@@ -70,11 +70,13 @@ func applyGPUStatusFromEvents(hw *models.HardwareConfig, events []models.Event)
 					ChangedAt: e.Timestamp,
 					Details:   strings.TrimSpace(e.Description),
 				})
-				gpu.StatusChangedAt = e.Timestamp
+				ts := e.Timestamp
+				gpu.StatusChangedAt = &ts
 				currentStatus[idx] = newStatus
 			}
 
-			gpu.StatusCheckedAt = e.Timestamp
+			ts := e.Timestamp
+			gpu.StatusCheckedAt = &ts
 		}
 	}
 
@@ -85,7 +87,7 @@ func applyGPUStatusFromEvents(hw *models.HardwareConfig, events []models.Event)
 		} else {
 			gpu.ErrorDescription = ""
 		}
-		if gpu.StatusCheckedAt.IsZero() && strings.TrimSpace(gpu.Status) == "" {
+		if gpu.StatusCheckedAt == nil && strings.TrimSpace(gpu.Status) == "" {
 			gpu.Status = "OK"
 		}
 	}

internal/parser/vendors/nvidia/component_status_time.go

@@ -230,7 +230,7 @@ func ApplyGPUAndNVSwitchCheckTimes(result *models.AnalysisResult, times componen
 		if ts.IsZero() {
 			continue
 		}
-		gpu.StatusCheckedAt = ts
+		gpu.StatusCheckedAt = &ts
 		status := strings.TrimSpace(gpu.Status)
 		if status == "" {
 			status = "Unknown"
@@ -261,7 +261,7 @@ func ApplyGPUAndNVSwitchCheckTimes(result *models.AnalysisResult, times componen
 			continue
 		}
 
-		dev.StatusCheckedAt = ts
+		dev.StatusCheckedAt = &ts
 		status := strings.TrimSpace(dev.Status)
 		if status == "" {
 			status = "Unknown"

internal/parser/vendors/nvidia/component_status_time_test.go

@@ -72,20 +72,20 @@ func TestApplyGPUAndNVSwitchCheckTimes(t *testing.T) {
 		NVSwitchBySlot: map[string]time.Time{"NVSWITCH0": nvsTs},
 	})
 
-	if got := result.Hardware.GPUs[0].StatusCheckedAt; !got.Equal(gpuTs) {
-		t.Fatalf("expected gpu status_checked_at %s, got %s", gpuTs.Format(time.RFC3339), got.Format(time.RFC3339))
+	if got := result.Hardware.GPUs[0].StatusCheckedAt; got == nil || !got.Equal(gpuTs) {
+		t.Fatalf("expected gpu status_checked_at %s, got %v", gpuTs.Format(time.RFC3339), got)
 	}
 	if result.Hardware.GPUs[0].StatusAtCollect == nil || !result.Hardware.GPUs[0].StatusAtCollect.At.Equal(gpuTs) {
 		t.Fatalf("expected gpu status_at_collection.at %s", gpuTs.Format(time.RFC3339))
 	}
-	if got := result.Hardware.PCIeDevices[0].StatusCheckedAt; !got.Equal(nvsTs) {
-		t.Fatalf("expected nvswitch status_checked_at %s, got %s", nvsTs.Format(time.RFC3339), got.Format(time.RFC3339))
+	if got := result.Hardware.PCIeDevices[0].StatusCheckedAt; got == nil || !got.Equal(nvsTs) {
+		t.Fatalf("expected nvswitch status_checked_at %s, got %v", nvsTs.Format(time.RFC3339), got)
 	}
 	if result.Hardware.PCIeDevices[0].StatusAtCollect == nil || !result.Hardware.PCIeDevices[0].StatusAtCollect.At.Equal(nvsTs) {
 		t.Fatalf("expected nvswitch status_at_collection.at %s", nvsTs.Format(time.RFC3339))
 	}
-	if !result.Hardware.PCIeDevices[1].StatusCheckedAt.IsZero() {
-		t.Fatalf("expected non-nvswitch device status_checked_at to stay zero")
+	if result.Hardware.PCIeDevices[1].StatusCheckedAt != nil {
+		t.Fatalf("expected non-nvswitch device status_checked_at to stay nil")
 	}
 }
 

internal/server/device_repository.go

@@ -568,10 +568,10 @@ func mergeDevices(primary, secondary models.HardwareDevice) models.HardwareDevic
 	fillFloat(&primary.InputVoltage, secondary.InputVoltage)
 	fillInt(&primary.TemperatureC, secondary.TemperatureC)
 	fillString(&primary.Status, secondary.Status)
-	if primary.StatusCheckedAt.IsZero() && !secondary.StatusCheckedAt.IsZero() {
+	if primary.StatusCheckedAt == nil && secondary.StatusCheckedAt != nil {
 		primary.StatusCheckedAt = secondary.StatusCheckedAt
 	}
-	if primary.StatusChangedAt.IsZero() && !secondary.StatusChangedAt.IsZero() {
+	if primary.StatusChangedAt == nil && secondary.StatusChangedAt != nil {
 		primary.StatusChangedAt = secondary.StatusChangedAt
 	}
 	if primary.StatusAtCollect == nil && secondary.StatusAtCollect != nil {