Polish characters (Option key) not working in CLI input on macOS

Description

Polish characters cannot be typed in Claude Code CLI input on macOS. On macOS, Polish diacritical characters (ą, ę, ó, ś, ł, ż, ź, ć, ń) are typed using the Option key + letter combination (e.g., Option+a = ą, Option+e = ę).

Environment

• OS: macOS (Darwin 25.2.0)
• Terminal: Ghostty
• Keyboard layout: Polish Pro
• Ghostty config: macos-option-as-alt = true (also tested with right and false)

Steps to reproduce

1. Open Claude Code in Ghostty terminal on macOS
2. Use Polish Pro keyboard layout
3. Try to type Polish characters using Option + letter (e.g., Option+a for "ą")
4. Characters are not inserted

Expected behavior

Polish diacritical characters should be inserted when using Option + letter combinations.

Actual behavior

Option key combinations are intercepted by Claude Code (likely for shortcuts like Option+Enter for newline) and Polish characters cannot be typed.

Notes

• Polish characters work correctly everywhere else in the terminal (outside Claude Code)
• This appears to be Claude Code intercepting Option key events for its own shortcuts
• Workaround: copy-paste Polish characters from elsewhere