feat(ps1): guard clauses for WSL distro and disk prereqs

[emersonbusson]

Summary

Adds Assert-SystemPrerequisites guard function to validate WSL distro existence, required binaries (fio, nbd-client), and disk free space requirements before executing the benchmark matrix.

Commits

Commit	Files	Validation	Risk/rollback
be26992	Files scripts/windows/Invoke-NbdBenchmarkMatrix.ps1	Verified PSScriptAnalyzer locally.	Revert if the guards incorrectly fail on compliant hosts.

Issue

Fixes #87

Owner

google-labs-jules[bot]

Labels

type:bug,area:ramshared

Validation

Mocked Invoke-BoundedProcess and paths to verify typed error handling logic in a scratch script, confirming correct logic parsing and bounds evaluation.

Rollback trigger

Revert if the guards incorrectly fail on compliant hosts.

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PR created automatically by Jules for task 4498989101168482773 started by @emersonbusson

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[emersonbusson]

Closed in favor of PR #2085 consolidation.

[google-labs-jules]

Closed in favor of PR #2085 consolidation.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.