Editor opens above Claude via Ctrl+E with a draggable divider at
35% height (clamped 15-70%). Ctrl+W or Escape closes it. The
workspace no longer renders a tab bar — Claude is the always-visible
primary surface per D-047/D-048; the editor is a split overlay
per D-049, not a tab. The _WorkspaceSlot separates editor from
primary content tabs and renders them as a vertical split when the
editor is open.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6
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