nx_jitterbuf_gate.nx

nx_jitterbuf_gate.nx -- proves + MEASURES the sovereign adaptive playout-delay (nx_jitterbuf): the interp buffer sizes itself to MEASURED jitter so a bad-mobile link stays smooth without needless latency on a good link. 1) LOW jitter (regular arrivals) -> jitter ~0, playout near min (no needless latency) -- measured 2) HIGH jitter (irregular arrivals) -> jitter rises, playout GROWS to cover it -- measured 3) GROW FAST / SHRINK SLOW: a spike lifts playout immediately, then it decays gradually (not instantly) 4) clamp (neg): playout always within [min,max] Built nx_cc_sovereign -> nxasm_x86 (no gcc, no .sh). license_tier: ORIGINAL