9-state recursive basin logic integrated into the simulation physics.
States: ←0, 0, →0, ←Σ, Σ, →Σ, ←∞, ∞, →∞
T(A,B) = next 9-state result
A = current symbolic state
B = previous symbolic state
Basin state: Σ
Pair: A=→0, B=Σ
The simulation now derives a symbolic basin state from the 9-state recursive engine, then feeds that state back into deformation, pull, and response.