[BUG] Spaces in filenames

Environment

• Platform (select one):
• [X] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 0.2.81 (Claude Code)
• Operating System: macOS 15.4.1
• Terminal: Ghostty

Bug Description

Claude Code has problems dealing with filenames that have spaces in them.

⏺ Bash(cat /Users[...]/content/articles/Configurable\ Custom\ Fields.md)…
  ⎿  cat: /Users[...]/content/articles/Configurable\: No such file or directory
     cat: Custom\: No such file or directory
     cat: Fields.md: No such file or directory