nx_taste_psychophysics_test.nx

nx_taste_psychophysics_test.nx -- smoke for nx_taste_psychophysics (T1). Proves mixture perception + the MEASURED EXCEED over additive scoring: - suppression: alone = unchanged, others present = reduced, monotone (1-3) - SUB-ADDITIVE mixture: perceived whole < linear sum (4) -- the exceed - umami: glutamate alone unchanged (5); SUPER-ADDITIVE with nucleotide (6), monotone in nucleotide (7) -- the opposite-direction exceed - perceive writes a suppressed 5-vector, rank preserved (8-10) Exit code = failed assertion number; 0 = all pass.