examples/snake/ leaves snake.s/.o/.combined.ww and the stripped binary alongside its Makefile after a build; selfhost/test/ probes drop .combined.ww next to each .ww. None of these are intended bootstrap inputs.
C bootstrap (phases 0-9): cmd/wwc, cmd/6c, cmd/6a, cmd/6l, cmd/ww, rt, lib/*. ww-side self-host (phase 10): selfhost/cmd/wwc — ww-cgen frontend; bootstrap fixed point. selfhost/cmd/6a — assembler; byte-identical to C 6a (test 991). selfhost/cmd/6l — linker w/ archive (.a) support; byte-identical to C 6l (test 992). selfhost/cmd/ww — driver (build/run/version); byte-identical to C ww (test 993). make test: 15/15. make bootstrap: ww2.s == ww3.s, ww2.o == ww3.o, ww2 == ww3 byte-identical, with the full ww-tooled chain.