Hojun-Cho
6354f5267c
Symmetric write-side counterpart of #8, bundled across both stages. cstage [N]Struct write was broken (1986 gated on TY_PTR); wwstage had no N_DOT(N_INDEX) write branch at all. New branch covers both [N]*Struct and [N]Struct via viaptr flag, uses fldstoreop for scalar/sub-word, MOVSS/MOVSD for float, two-MOVQ for str rhs. Compound (PLUSEQ etc.) wired for integer scalar.