Update win-update-registry.ps1 to v1.1

[anmocanu]

.VERSION
v1.1: [May 2026] - Updated the script (current)
- Fixed Get-VM failure when Hyper-V module is not available on host.
- Added guarded nested VM validation with safe fallback logging.
- Added explicit runtime parameter validation for rootKey, propertyType, controlSet, and required inputs.
- Updated helper import to Get-Disk-Partitions-v2 and aligned partition processing flow.
- Added rescue OS drive exclusion to avoid modifying the running rescue VM hive.
- Added per-partition reg load failure handling (skip bad partition, continue others).
- Added structured step-by-step logging, timestamped CSE log output, and final status tracking.
- Improved error handling to continue processing partitions safely and report aggregate result.
v1.0: Initial version

[EdwinBernal1]

Issues Found

🟡 Validation mismatch: allows unsupported root hives for reg load

Script validates rootKey as one of HKLM, HKCC, HKCR, HKCU, HKU, but reg load supports hive mount targets under HKLM/HKU in practical use. Allowing HKCC/HKCR/HKCU can pass validation and still fail at runtime.

Recommendation: restrict accepted rootKey to HKLM and HKU for this script path.

🟡 Load failure detection relies on output text, not exit code

Failure handling checks $loadResult -match 'ERROR' rather than $LASTEXITCODE. This is fragile for localization/nonstandard output.

Recommendation: treat nonzero $LASTEXITCODE as authoritative and use text only for diagnostics.