[BUG] `/add-dir ~/Downloads` doesn't work

Environment

• Platform (select one):
• [ ] Anthropic API
• [x] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.41
• Operating System: macOS 15.5
• Terminal: iTerm 2

Bug Description

Running the command /add-dir ~/Downloads should add my downloads folder to the working directories, but it does not expand the tilde path correctly, so it tries to add /path/to/my/working/dir/~/Downloads which isn't found.

Steps to Reproduce

1. Open claude code from a working dir in some folder, eg /Volumes/git/myproject
2. Run /add-dir ~/Downloads

Expected Behavior

The /Users/myusername/Downloads directory should be added to the working directories

Actual Behavior

Path /Volumes/git/myproject/~/Downloads was not found