feat: add standalone server topology view

internal/parser/vendors/dell/parser.go

@@ -488,7 +488,7 @@ func parsePCIeDeviceView(props map[string]string, result *models.AnalysisResult)
 		DeviceID:     deviceID,
 		BDF:          formatBDF(props["busnumber"], props["devicenumber"], props["functionnumber"]),
 		Manufacturer: manufacturer,
-		NUMANode:     parseIntLoose(props["cpuaffinity"]),
+		NUMANode:     parseOptionalIntLoose(props["cpuaffinity"]),
 		Status:       normalizeStatus(props["primarystatus"]),
 	}
 	result.Hardware.PCIeDevices = append(result.Hardware.PCIeDevices, p)
@@ -535,7 +535,7 @@ func parseNICView(props map[string]string, result *models.AnalysisResult) {
 			props["controllerbiosversion"],
 		)),
 		PortCount: inferPortCountFromFQDD(fqdd),
-		NUMANode:  parseIntLoose(props["cpuaffinity"]),
+		NUMANode:  parseOptionalIntLoose(props["cpuaffinity"]),
 		Status:    normalizeStatus(props["primarystatus"]),
 	}
 	if mac != "" {
@@ -589,7 +589,7 @@ func parseControllerView(props map[string]string, result *models.AnalysisResult)
 		DeviceClass:  "storage-controller",
 		Manufacturer: strings.TrimSpace(firstNonEmpty(props["devicecardmanufacturer"], props["manufacturer"])),
 		PartNumber:   strings.TrimSpace(firstNonEmpty(props["ppid"], props["boardpartnumber"])),
-		NUMANode:     parseIntLoose(props["cpuaffinity"]),
+		NUMANode:     parseOptionalIntLoose(props["cpuaffinity"]),
 		Status:       normalizeStatus(props["primarystatus"]),
 	})
 
@@ -983,6 +983,25 @@ func parseIntLoose(v string) int {
 	return n
 }
 
+// parseOptionalIntLoose preserves zero as a real value while keeping missing
+// and textual N/A values distinct. CPUAffinity is the motivating field: NUMA
+// node 0 is valid, whereas "Not Applicable" means there is no affinity.
+func parseOptionalIntLoose(v string) *int {
+	v = strings.TrimSpace(v)
+	if v == "" {
+		return nil
+	}
+	num := firstNumberRE.FindString(v)
+	if num == "" {
+		return nil
+	}
+	n, err := strconv.Atoi(num)
+	if err != nil {
+		return nil
+	}
+	return &n
+}
+
 func parseInt64Loose(v string) int64 {
 	v = strings.TrimSpace(v)
 	if v == "" {