[BUG] Unable to type the "@" character in the Claude Code terminal interface

Bug Description

Unable to type the "@" character in the Claude Code terminal interface, despite it working normally in the IDE and other applications.

Environment

• OS: macOS (Darwin 24.5.0)
• Claude Code Version: 1.0.71
• Keyboard Layout: CanadianFrench-PC

## Steps to Reproduce

1. Open Claude Code terminal in IntelliJ IDE
2. Try to type "@" using normal key combination (Option + 2 on CanadianFrench-PC)
3. Character does not appear

## Expected Behavior
The "@" character should appear when typed, as it does in other applications.

## Actual Behavior
The "@" character does not appear in the terminal input.

## Additional Context

• "@" works normally in the IDE portion of the same application
• "@" works in other terminal applications (Terminal.app, iTerm2, etc.)
• Other special characters may also be affected (not tested)

## Attempted Solutions

• Tried Option + 2, Alt + 64
• Verified keyboard layout settings
• Issue persists across terminal sessions

Additional Context

• Happens on both IntelliJ plugin and Integrated IntelliJ terminal (zsh)