The prototype's 1108px Split floor and its pin gate shipped as-is and
failed silently in any non-maximized laptop window: picking Split kept
rendering one surface with nothing on the right, and the rail's pin
button was disabled everywhere. Three changes:
- SPLIT_FLOOR drops to 960 (460 chat + ~466 doc + rail edge/divider);
the squeeze above the floor is handled by clamping the persisted doc
width so chat keeps CHAT_FLOOR instead of relying on a huge threshold
- picking Split below the floor now says so (toast) instead of silence
- pinning the rail no longer depends on window width
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Ramnique Singh
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