nx_bench_divpow2.nx

nx_bench_divpow2.nx -- NishiLang twin of bench/xlang/divpow2.c. Signed divide-by-power-of-two over NEGATIVE + positive + INT_MIN dividends (the round-toward-zero bias path collatz never hits). Checksum bit-exact vs gcc AND clang = the correctness oracle for the G7 sign-bias sequence. license_tier: ORIGINAL No hw writes (Rule 26). (nx_syscalls_x86_64.nx import REMOVED 2026-07-31, debt 1785528831: this file already gets the canonical syscall layer via nx_clock.nx -> syscalls.nx, so importing the raw-x86 module too put TWO syscall layers in one TU -- every wrapper twice, numbering picked by definition ORDER, silently.)