Eric's layout call: the first-person pane wears exactly the board's width, directly above it. A shrink-wrapped column stacks the two, with the pane held out of the intrinsic sizing (width:0, min-width:100%) so the BOARD alone decides how wide the column is; the canvas keeps its aspect as it scales. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>