nx_pattern_emit13.nx

nx_pattern_emit13.nx -- PATTERN EMITTER: STATE_MACHINE (shape 18 -- the first rung of the ADVANCED-STACK ladders spec 2026-06-10: the shape DirectX-class pipeline validation, CUDA-class queue lifecycles, Klipper-class G-code modal interpreters, and TLS/session handshakes are all made of). The Builder authors a deterministic finite state machine from a TRANSITION TABLE: spec[0]=nstates spec[1]=nevents spec[2]=s0 (initial state) spec[3 + s*nevents + e] = next state, or -1 = UNDEFINED (refused, never silently absorbed) Authored fns (transitions BAKED as straight-line ifs -- no runtime table interpreter, rule 22): <name>_step(s, e) -> next state; -1 on out-of-range s/e or undefined transition <name>_run(ev, n, s0) -> final state after folding ev[0..n); -1 the moment any step refuses EMIT-TIME RAILS (the PID/PREDICTOR_CODER discipline): nstates/nevents outside 1..16, s0 out of range, any table value outside -1..nstates-1 -> spec REFUSED, nothing written. Test KATs are COMPUTED BY THE EMITTER from the same table: a greedy defined-transition walk from s0 with the expected final state, an undefined-transition refusal (or out-of-range when the table is total), an out-of-range-event refusal, and a determinism re-run. Extends the emit1-12 family. LAWS: struct-free, integer-only, flat ifs, no &&/||, <=6 args per func. license_tier: ORIGINAL