Backspace/Ctrl+Backspace keys reversed in CLI on Windows PowerShell

On Windows 11 PowerShell, Claude Code CLI has reversed backspace behavior:

• Pressing Backspace deletes an entire word (should delete one character)
• Pressing Ctrl+Backspace deletes one character (should delete a word)

This is the opposite of standard terminal behavior and PSReadLine's correct keybindings.

Environment:

• Platform: Windows 11 Pro
• Shell: PowerShell
• PSReadLine keybindings: Correct (verified with Get-PSReadLineKeyHandler)
• Backspace is mapped to BackwardDeleteChar ✓
• Ctrl+Backspace is mapped to BackwardKillWord ✓

Issue appears to be in Claude Code CLI's input handler on Windows, not the shell configuration.