Hojun-Cho
af87ff4f31
main.ww's 33 piecewise stderr diagnostics carried hand-counted byte literals (os.write(2, "lit".ptr, NNu64)). Route them through a tool-local cerr(m: str) that takes m.len, removing the hand-count hazard. strictpkgmismatch + `ww test` FAIL keep their runtime-length *u8 writes (no literal to count). Regenerate main.combined.ww. Not byte-id-neutral (error-path asm), but stderr + exit codes are byte-identical old-vs-new across the driver diagnostics: verified by wwstage-vs-wwstage oracle (cstage ww diag wording diverges pre-fold).