Bias croupier tracks the distance in pockets between every spin and the next spin, separately for right (CW) and left (CCW) spins. Casino rule forces croupiers to alternate directions, so the engine builds two directional bias maps: one for R (clockwise) and one for L (counter-clockwise).
D (Distance Next Spin): for each selected D, the engine jumps D pockets from the last spin in the direction of the next spin (R → CW, L → CCW) to find the target zone. For D=0, the target zone is centered on the last number itself.
N (Neighbors): controls how many neighbours around each distance target are bet (0 = centre only, 1 = centre ±1, etc.).
