Layout Debug Legend
Cyan = panel-body (main container)
Brown = panel (background container)
Yellow = rootList (left list)
Magenta = itemList (right list)
Green = left panel
Red = right panel
White = node (row container)
Blue = node-header (grid)

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Cyan BG = panel-body background
Brown BG = panel background
Yellow BG = rootList background
Magenta BG = itemList background
Green BG = left panel background
Red BG = right panel background
White BG = node background
Blue BG = node-header background