Numpad keys not working in Claude Code v2.1.84 (VS Code terminal mode, Windows)

Description

Numpad (numeric keypad) keys stopped working in Claude Code after updating to version 2.1.84. Keys pressed on the numpad are not recognized / ignored entirely.

Environment

• Claude Code version: 2.1.84
• VS Code extension: anthropic.claude-code-2.1.84-win32-x64
• OS: Windows 10 Pro 10.0.19045
• Terminal: xterm-256color, bash
• Setting: claudeCode.useTerminal: true
• Font: JetBrains Mono

Steps to reproduce

1. Update Claude Code extension to v2.1.84
2. Open Claude Code in VS Code terminal (claudeCode.useTerminal: true)
3. Try typing numbers using the numpad (right side of keyboard)
4. Numbers are not entered — keys are ignored

Expected behavior

Numpad keys should input digits and operators, same as the main keyboard row.

Actual behavior

Numpad keys are completely ignored inside Claude Code TUI. They worked correctly in the previous version of the extension (before March 26, 2026 update).

Additional context

• Numpad works fine in a regular VS Code integrated terminal (tested in the same session)
• Only broken inside Claude Code TUI
• This is a regression introduced in v2.1.84