Smart Editor Detection

What: Intelligent editor selection that verifies editors are actually installed before attempting to use them.

How it works:

# Priority order: $VISUAL → $EDITOR → code → vi → nano
# Only selects editors that exist on the system
claude /memory

Details:

• Uses which (Unix) or where (Windows) to check editor availability
• Tries VS Code (code), then vi, then nano in order
• Trims whitespace from environment variables to prevent issues
• Throws clear error if no editor is available
• Improves reliability when opening memory files
• Evidence: If1() at line 404558, V95() at line 404550