Feature: visual screen clear without resetting conversation context

Problem

There is no way to clear the visual display in Claude Code without destroying conversation context.

• /clear wipes the entire conversation context and creates a new session
• Ctrl+L is bound to chat:clearInput (clears the text input box only)
• app:redraw redraws the TUI but doesn't clear scrollback
• There is no keybinding or command for a visual-only screen reset

Expected Behavior

A command (e.g., /cls) or keybinding that:

1. Clears the visible terminal / scrollback display
2. Preserves the full conversation context and session
3. Equivalent to the clear command in a normal terminal — cosmetic only

Why This Matters

Users accustomed to Ctrl+L or clear in terminal workflows instinctively reach for /clear when they want a clean screen, only to lose their entire conversation. This is a common footgun — multiple related issues exist:

• #39975 (add /unclear to undo /clear)
• #37451 (/clear semantics are misleading)
• #31220 (/clear --keep-session)
• #25734 (destructive default in plan mode)

A visual-only clear would eliminate this entire class of accidents.

Environment

• Claude Code 2.1.97
• Linux (CachyOS)
• Terminal: Alacritty / kitty