Hojun-Cho
711762b6d8
A string literal is TY_UNTYPED_STR, not TY_STR, so `"abc".len` missed the typed slice/str pseudo-field gate in cgen.c's N_DOT and fell to the final base-eval fallback, which left AX=.ptr — `.len` returned the pointer instead of the length. wwstage's cgdot catch-all already did the BX->AX shuffle, so the two stages diverged (rule-10). Align cstage UP: the N_DOT fallback emits MOVQ BX,AX for `.len`. `.ptr` is unchanged (already returned AX); `.cap` deliberately not added (wwstage catch-all is ptr/len only — mirror exactly). byte-id was blind here: no bootstrap source uses literal `.len` (lengths are hardcoded around literals), so the gate never exercised it. New test 801 pins both dimensions (cstage run + cs==ww byte-id) over len/empty/multibyte/ptr-deref/arg-passthrough rows.