PS1 entries were crashing with a cryptic "Cannot bind LiteralPath because it is
null" when the resolved script path came back null - the per-entry try/catch
caught it (so the scope survived) but the cause was opaque. Now the PS1 branch
accepts either Script or Installer, null-guards before Join-Path/Test-Path, and
logs the resolved relative path, so a bad/empty entry is skipped with a clear
"has no Script/Installer value" line instead of a null-bind throw.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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