feat(hardware): collect and export licenses via Dell iDRAC10 Redfish walk

Implements the hardware.licenses[] contract section (v2.12, refreshed from
reanimator/core's hardware-ingest-contract.md — was v2.11 locally).

- models.License / HardwareConfig.Licenses mirror the contract field set.
- collector.collectLicenses() reads the standard DMTF
  /redfish/v1/LicenseService/Licenses collection during Redfish-walk replay;
  it's a generic DMTF resource, not Dell-specific, so any future vendor's
  Redfish walk gets license collection for free through
  ReplayRedfishFromRawPayloads.
- vendors/dell merges replayed Licenses like every other category.
- exporter.convertLicenses/dedupeLicenses wire hw.Licenses into the
  reanimator export directly (no canonical-devices merge — licenses have no
  physical identity to merge on), setting Present on every record from the
  start (per the ADL-049 round-trip lesson).
- chart viewer renders a licenses section in /chart/current.

Verified end-to-end on the PowerEdge R7715 (1TVFYL4) TSR: 3 system-level
licenses extracted and correctly exported/rendered.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/parser/vendors/dell/redfish_walk.go

@@ -75,6 +75,7 @@ func mergeRedfishReplay(result *models.AnalysisResult, replayed *models.Analysis
 		hw.GPUs = append(hw.GPUs, rhw.GPUs...)
 		hw.NetworkAdapters = append(hw.NetworkAdapters, rhw.NetworkAdapters...)
 		hw.PowerSupply = append(hw.PowerSupply, rhw.PowerSupply...)
+		hw.Licenses = append(hw.Licenses, rhw.Licenses...)
 	}
 
 	result.Sensors = append(result.Sensors, replayed.Sensors...)