Windows PowerShell Installation Fails on Fresh Machines

[GordonBeeming]

Summary

The installation command for Windows PowerShell fails on newly installed Windows machines with directory and file not found errors. Users cannot install copilot_here because the required PowerShell directories and profile files don't exist by default.

Environment

• Fresh Windows installation
• Windows PowerShell 5.1
• No existing PowerShell profile or Documents\PowerShell directory

Steps to Reproduce

1. Open Windows PowerShell on a fresh Windows machine
2. Run the installation command from the website
3. Observe errors:
   • Could not find a part of the path 'C:\Users\...\Documents\PowerShell\copilot_here.ps1'
   • Cannot find path '...\Microsoft.PowerShell_profile.ps1' because it does not exist

Acceptance Criteria

• Installation command creates missing directories automatically
• Installation command creates missing profile file automatically
• Installation works on fresh Windows installations without admin rights
• PowerShell script is compatible with both Windows PowerShell 5.1 and PowerShell Core 7+
• No regex parsing errors in Windows PowerShell 5.1

[GordonBeeming]

Fixed in commit c63f884:

1. Updated website installation command to create directories and profile file
2. Fixed PowerShell 5.1 regex compatibility (changed -split '\.' to -split '[.]')
3. Bumped version to 2025.12.29