v1.2.0: Enhanced Inspur/Kaytus parser with GPU, PCIe, and storage support

Major improvements:
- Add CSV SEL event parser for Kaytus firmware format
- Add PCIe device parser with link speed/width detection
- Add GPU temperature and PCIe link monitoring
- Add disk backplane parser for storage bay information
- Fix memory module detection (only show installed DIMMs)

Parser enhancements:
- Parse RESTful PCIe Device info (max/current link width/speed)
- Parse GPU sensor data (core and memory temperatures)
- Parse diskbackplane info (slot count, installed drives)
- Parse SEL events from CSV format (selelist.csv)
- Fix memory Present status logic (check mem_mod_status)

Web interface improvements:
- Add PCIe link degradation highlighting (red when current < max)
- Add storage table with Present status and location
- Update memory specification to show only installed modules with frequency
- Sort events from newest to oldest
- Filter out N/A serial numbers from display

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

internal/parser/vendors/inspur/sdr.go

@@ -46,6 +46,7 @@ func ParseSDR(content []byte) []models.SensorReading {
 				if v, err := strconv.ParseFloat(vm[1], 64); err == nil {
 					reading.Value = v
 					reading.Unit = strings.TrimSpace(vm[2])
+					reading.RawValue = valueStr // Keep original string for reference
 				}
 			}
 		} else if strings.HasPrefix(valueStr, "0x") {