nx_taste_transduce_test.nx

nx_taste_transduce_test.nx -- smoke for nx_taste_transduce (T0). Proves real receptor transduction + the MEASURED EXCEED over a static/ linear taste score: - monotone dose-response, half-max at K (1-4) - SATURATION: 8x stimulus -> < 2x perception (5), and far below the linear prediction (6) -- the exceed a static score cannot make - high-dose saturation toward Imax (7) - THRESHOLD gating: sub-threshold registers 0 (8-9) - 1000x sensitivity range: bitter detected where sweet is not (10-11) - cooperative (h=2) half-max at K for bitter (12-13) Exit code = failed assertion number; 0 = all pass.