security-guidance plugin fails on Windows - uses python3 instead of python

Bug Description

The security-guidance@claude-plugins-official plugin's hook uses python3 which doesn't exist on Windows.

File

hooks/hooks.json:

"command": "python3 ${CLAUDE_PLUGIN_ROOT}/hooks/security_reminder_hook.py"

Error Message

Plugin hook error: Python is niet gevonden; uitvoeren zonder argumenten om te installeren vanaf de Microsoft Store...

(Dutch locale - "Python not found")

Environment

• OS: Windows 11
• Python: Installed at C:\Users\...\Python313\python.exe
• Issue: Windows uses python or py, not python3

Suggested Fix

Use python (works on all platforms) or add cross-platform detection.