nx_yt_nsolve.nx

nx_yt_nsolve.nx -- the YouTube n-THROTTLE SOLVER. Modern googlevideo URLs carry an &n=<token> param; if you fetch with the RAW n, the CDN throttles you to ~50KB/s (broken/slow downloads). base.js ships a JS function that transforms n -> n' ; requesting with n' gives full speed. That function is JS (array/char scrambling), exactly the class our engine already runs (see nx_js_ytsig_gate: split->transform->join). So the solver is: (1) EXTRACT the named function from base.js text -- brace-balanced + STRING-AWARE so literals with { } " ' in the body don't truncate it; (2) BUILD a self-contained runnable script (def + call); (3) RUN it via js_run_source and read the string result. This turns an extracted throttled URL into a FAST one, sovereignly (our own JS engine -- no Node, no remote). The function NAME + its helper-array location are themselves site-shape patterns -> feed the self-healing table (nx_extract_heal) when YouTube reshapes base.js. license_tier: ORIGINAL