fix(windows): improve install.ps1 errors for missing VC++ runtime

[cheezone]

Summary

On clean Windows machines without the MSVC runtime, vp.exe fails to start during irm https://vite.plus/ps1 | iex with exit code 0xC0000135 (STATUS_DLL_NOT_FOUND). The installer previously reported a generic "Failed to install dependencies" with an empty install.log, and exit 1 closed the entire PowerShell window when run via iex.

This PR:

• Detects 0xC0000135 after vp.exe install fails and prints VC++ 2015–2022 Redistributable install guidance (x64/arm64)
• Replaces bare exit 1 with a non-CI halt path so interactive irm | iex installs keep the shell open without duplicating the error message

All Write-Error-Exit paths now keep the interactive shell open when not running under CI=true.

Context

Similar report elsewhere: kirodotdev/Kiro#9752

Test plan

• Clean Windows without VC++: single clear error, shell stays open (no duplicate message, no window close)
• Windows with VC++ installed: install completes normally
• CI path (CI=true): still exits with non-zero code

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[fengmk2]

@codex review

[ljlsasuke]

I’ve come across this problem too; it’s a great fix.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 7ec73799b7

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[cheezone]

Thanks for the Codex review — addressed in the latest push:

1. Non-CI exit code: Exit-Installer now calls exit $Code when $PSCommandPath is set (e.g. powershell -File install.ps1), not only when CI=true. The catchable stop signal is only used for irm | iex where there is no script file path.

2. NTSTATUS comparison: Test-IsDllNotFoundExitCode no longer casts arbitrary negative exit codes to [uint32]; it compares the signed value and uses -band 0xFFFFFFFF for hex matching.

3. Nested catch: Get-PackageMetadata inner catch blocks rethrow VP_INSTALL_STOP so registry/JSON fallback does not mask an already-printed error.