Hojun-Cho
50d1705100
#252/#253/#257 N_DOT-base addr-of-slice: 105 byteid=1 rows -> test/lang/dotbase_addr_slice_test.ww (primitive-only); 6 #254 run-only rows (4 chain_val_* + letcopy_dot_struct/letcopy_nest_struct, value-nested-struct frame divergence) -> dotbase_addr_slice_runonly_test.ww. New byteid-exclusion seam: LANGBYTEID_FILES filter-out %_runonly_test.ww (suffix convention; T1 value-runs both, T2 byteid skips runonly). byteid floor 54->55. Carve-out preserves the .c byteid field 1:1; all 105 byteid=1 rows verified cs==ww under the live sepwork gate.