feat: add xFusion iBMC dump parser (tar.gz format)
Parses xFusion G5500 V7 iBMC diagnostic dump archives with:
- FRU info (board serial, product name, component inventory)
- IPMI sensor readings (temperature, voltage, power, fan, current)
- CPU inventory (model, cores, threads, cache, serial)
- Memory DIMMs (size, speed, type, serial, manufacturer)
- GPU inventory from card_manage/card_info (serial, firmware, ECC counts)
- OCP NIC detection (ConnectX-6 Lx with serial)
- PSU inventory (4x 3000W, serial, firmware, voltage)
- Storage: RAID controller firmware + physical drives (model, serial, endurance)
- iBMC maintenance log events with severity mapping
- Registers as vendor "xfusion" in the parser registry
All 11 fixture tests pass against real G5500 V7 dump archive.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
30409eef67