The edges of the habitable area should be treated as if they were hills getting gradually steeper. The direction of gravity won't be perpendicular to the curva

The edges of the habitable area should be treated as if they were hills getting gradually steeper. The direction of gravity won't be perpendicular to the curvature of the hull, but who says you need to stick to the hull? Even on Earth, people don't stand diagonally on hillsides. We build stairs, towers, and terraced gardens, with man-made floors perpendicular to the direction of gravity. Some of the illustrations are more realistic than others in this respect.