Reflected walker · five sine ribbons along the path
Combines reflected-vector-five-path-buffer (the traversal generator) with five-sine-waves-synchronized-buffers (the wave engine). A constant-speed point steers forward-biased and reflects off the walls. Its direction of movement drives five phase-shifted sine waves (φ = 0, π/8, π/4, 3π/8, π/2) that follow the walker's path as one continuous ribbon — the ribbon extends as far as the walker has travelled, turns as the walker turns, and the crests keep flowing in the direction of travel, never stopping.