fix(hooks): use relocated build commands

shared/hooks/scripts/Invoke-PostChangeVerification.ps1

@@ -1,5 +1,5 @@
 param([string]$RepositoryRoot = (Split-Path $PSScriptRoot -Parent | Split-Path -Parent | Split-Path -Parent))
-$build = Join-Path $RepositoryRoot 'scripts/build.ps1'
+$build = Join-Path $RepositoryRoot 'scripts/commands/build.ps1'
 if (-not (Test-Path $build)) { Write-Error 'Build script is missing.'; exit 1 }
 $shellCommand = if ([Environment]::OSVersion.Platform -eq [PlatformID]::Win32NT) { 'powershell' } else { 'pwsh' }
 & $shellCommand -NoProfile -ExecutionPolicy Bypass -File $build

shared/hooks/scripts/invoke-post-change-verification.sh

@@ -2,5 +2,5 @@
 set -euo pipefail
 
 root=${1:?Repository root is required}
-bash "$root/scripts/build.sh"
+bash "$root/scripts/commands/build.sh"
 printf 'PASS post-change verification\n'