fix: dedup GPUs across multiple chassis PCIeDevice trees in Redfish collector

Supermicro HGX exposes each GPU under both Chassis/1/PCIeDevices and a
dedicated Chassis/HGX_GPU_SXM_N/PCIeDevices. gpuDocDedupKey was keying
by @odata.id path, so identical GPUs with the same serial were not
deduplicated across sources. Now stable identifiers (serial → BDF →
slot+model) take priority over path.

Also includes Inspur parser improvements: NVMe model/serial enrichment
from devicefrusdr.log and audit.log, RAID drive slot normalization to
BP notation, PSU slot normalization, BMC/CPLD/VR firmware from RESTful
version info section, and parser version bump to 1.8.

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

internal/parser/vendors/inspur/storage_serial_fallback.go

@@ -73,6 +73,24 @@ func looksLikeStorageSerial(v string) bool {
 	return hasLetter && hasDigit
 }
 
+// applyRAIDSlotSerials updates storage serial numbers using the slot→serial map
+// derived from audit.log RAID SN change events. Overwrites existing serials since
+// audit.log represents the authoritative current state after all disk replacements.
+func applyRAIDSlotSerials(hw *models.HardwareConfig, serials map[string]string) {
+	if hw == nil || len(serials) == 0 {
+		return
+	}
+	for i := range hw.Storage {
+		slot := strings.TrimSpace(hw.Storage[i].Slot)
+		if slot == "" {
+			continue
+		}
+		if sn, ok := serials[slot]; ok && sn != "" {
+			hw.Storage[i].SerialNumber = sn
+		}
+	}
+}
+
 func applyStorageSerialFallback(hw *models.HardwareConfig, serials []string) {
 	if hw == nil || len(hw.Storage) == 0 || len(serials) == 0 {
 		return