Fixes several offline-hive build failures: TrustedInstaller-owned keys
(WindowsRuntime\ActivatableClassId, Explorer\Advanced, System\GameConfigStore, Search
SystemIndex) denying writes even to admin-owned processes, a PowerShell 5.1 quirk that drops
empty-string reg.exe arguments and can hang the build on a silent overwrite prompt, a
registry-handle leak that left hives locked and cascaded into DISM cleanup failures, and
relaxed the post-ResetBase health gate to accept 'Repairable' (only abort on
'NonRepairable') since ResetBase makes full repair impossible anyway - documented that
repairing the installed OS needs the original stock ISO, not the tweaked output. Also
rolls in in-progress updates to the other maker scripts and OEM setup/first-boot scripts.