Keyboard-only scrolling not available in conversation view

Description

There is currently no way to scroll through the conversation history using only the keyboard in Claude Code CLI.

Steps to Reproduce

1. Open Claude Code in a terminal on Windows
2. Have a conversation long enough to exceed the visible area
3. Attempt to scroll up/down using arrow keys or keyboard shortcuts

Expected Behavior

A keyboard shortcut (e.g., Shift+Arrow Up/Down, Ctrl+Arrow Up/Down, or Page Up/Page Down) should allow scrolling through the conversation history.

Actual Behavior

• Arrow keys are captured by the text input field
• Page Up/Page Down do not scroll the conversation
• The only workaround is selecting text and dragging to scroll, which is slow and impractical

Impact

This is an accessibility concern for users without a mouse or external pointing device. Reviewing previous output in a long conversation is a core part of the workflow.

Environment

• OS: Windows 11
• Terminal: Windows Terminal / PowerShell
• Claude Code: latest version

Suggestion

Add a dedicated keyboard shortcut to scroll the conversation view independently of the text input cursor.