fix(webi): bootstrap fails on Windows usernames with apostrophes or spaces

[Copilot]

The bootstrap template passed the download path via curl.exe -o "...", which routes through PowerShell's external-program argument quoting. On PS 5.x, paths containing apostrophes or spaces (common in legacy/AD-migrated accounts) are mangled, causing curl to silently not write the file — then & "path.ps1" throws CommandNotFoundException.

Changes

• _webi/curl-pipe-bootstrap.tpl.ps1
  • Replace curl.exe -o "$Env:USERPROFILE\..." with pipe to Out-File -Encoding utf8, which uses .NET file I/O directly and is immune to PS argument-quoting bugs. Consistent with how webi-pwsh.ps1 handles all its own downloads.
  • Extract path into $b_webi_ps1 variable to avoid duplication.
  • Add post-download guard checking $LASTEXITCODE, Test-Path, and minimum file size — surfaces SSL/network failures as a clear Write-Error instead of the cryptic downstream CommandNotFoundException.

-curl.exe -s -A "windows" "$Env:WEBI_HOST/packages/webi/webi-pwsh.ps1" -o "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1"
-Set-ExecutionPolicy -Scope Process Bypass
-& "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1" "{{ exename }}"
+$b_webi_ps1 = "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1"
+curl.exe -s -A "windows" "$Env:WEBI_HOST/packages/webi/webi-pwsh.ps1" | Out-File -Encoding utf8 "$b_webi_ps1"
+if ($LASTEXITCODE -ne 0 -or -not (Test-Path "$b_webi_ps1") -or (Get-Item "$b_webi_ps1").Length -lt 100) {
+    Write-Error "error: failed to download '$Env:WEBI_HOST/packages/webi/webi-pwsh.ps1'"
+    exit 1
+}
+Set-ExecutionPolicy -Scope Process Bypass
+& "$b_webi_ps1" "{{ exename }}"

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[Bug] Can't install webi fail to find webi-pwsh.ps1</issue_title>
<issue_description>## What were you trying to install (or what else went wrong)?

I was trying to install webi

What exactly did you do?

I ran curl.exe --ssl-no-revoke https://webi.ms/webi | powershell in an normal command prompt

What went wrong?

 Microsoft Windows [Version 10.0.26200.7705]
(c) Microsoft Corporation. Alle rettigheder forbeholdes.

C:\Users\xxx>curl.exe --ssl-no-revoke https://webi.ms/webi | powershell
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Install the latest PowerShell for new features and improvements! https://aka.ms/PSWindows

100   785    0   785    0     0   1333      0 --:--:-- --:--:-- --:--:--  1346
# Download the latest webi, then install webi
PS C:\Users\xxx> # <pre>
PS C:\Users\xxx> ############################################################
PS C:\Users\xxx> # <h1>Cheat Sheet at https://webinstall.dev/webi</h1>
PS C:\Users\xxx> # <meta http-equiv="refresh" content="3; URL='https://webinstall.dev/webi'" />
PS C:\Users\xxx> ############################################################
PS C:\Users\xxx> New-Item -Path "$Env:USERPROFILE\Downloads\webi" -ItemType Directory -Force | Out-Null
PS C:\Users\xxx> New-Item -Path "$Env:USERPROFILE\.local\bin" -ItemType Directory -Force | Out-Null
PS C:\Users\xxx> IF ($null -eq $Env:WEBI_HOST -or $Env:WEBI_HOST -eq "") { $Env:WEBI_HOST = 'https://webi.ms'}
PS C:\Users\xxx> curl.exe -s -A "windows" "$Env:WEBI_HOST/packages/webi/webi-pwsh.ps1" -o "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1"
PS C:\Users\xxx> Set-ExecutionPolicy -Scope Process Bypass
PS C:\Users\xxx> & "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1" "webi"
& : The term 'C:\Users\xxx\.local\bin\webi-pwsh.ps1' is not recognized as the name of a cmdlet, function, script file
, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and t
ry again.
At line:1 char:3
+ & "$Env:USERPROFILE\.local\bin\webi-pwsh.ps1" "webi"
+   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\Users\xxx\.local\bin\webi-pwsh.ps1:String) [], CommandNotFoundExce
   ption
    + FullyQualifiedErrorId : CommandNotFoundException

PS C:\Users\xxx>
> C:\Users\xxx>

Which OS did you try on?

• Mac
• Windows
• Linux

What type of computer (i.e. laptop, desktop, Raspberry Pi)?

• Laptop or Desktop (amd64 / x86-64)
• Raspberry Pi (ARM-64)
• Other (please specify, if you know)
  </issue_description>

<agent_instructions>Investigate what the nature of this problem might be from the person's description and my comments.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@coolaj86 @kimth86 Does the xxxx in 'C:\Users\xxxx\.local\bin\webi-pwsh.ps1' happen to have a space or apostrophe or other special character? Windows 11 doesn't allow those anymore, but if you've migrated your computer from an older version of Windows or Active Directory, it may have invalid characters.

• Fixes [Bug] Can't install webi fail to find webi-pwsh.ps1 #1040

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