nx_gsim_seq_test.nx

nx_gsim_seq_test.nx -- proves the SEQUENTIAL gate simulator (nx_gsim_tick): a netlist with DFFs that holds + updates STATE across clocked ticks. This is the keystone that makes a gate-level CPU RUNNABLE (registers, PC, accumulators). Two stateful elements share the clock: Q1 (counter): D1 = Q1 + 1 -> Q1 counts ticks Q2 (accumulator): D2 = Q2 + in -> Q2 sums the per-tick inputs Drive in=[10,20,30] then 97 idle ticks (in=0). After 100 ticks: Q1=100, Q2=60. Known answer: "100 60", exit 0.