nx_nxld_main.nx

nxld_main.nx -- CLI driver for the sovereign linker. Usage: nxld <input.o> > <output.elf> Reads input.o via sys_read_file, opens it as an Elf object, runs nxld_link() to produce a statically-linked RV64 Linux ELF executable, writes the bytes to stdout. Exit codes: 0 success 1 no args 2 read failed 3 open failed (bad ELF magic / not RV64 / etc.) 4 link failed Eventual goal: replace `riscv64-linux-gnu-ld` in verify.sh and bootstrap_proof.sh with `nxld`. Removes one of the two remaining gcc dependencies in the verify chain (the other being gcc-as, which the next sovereign tool nxasm-cli replaces).