Hojun-Cho
3f0b7647f6
test/xmod/m1_test.ww replaces 989_m1mangle_run.c and 989_m1usehint_run.c with every assertion preserved (5 tree rows + 2 usehint rows, both stages, plus the leaf_collision byte-id leg; concat order strengthened from shell glob to byte-sorted listdir).