- Add phase129_if_only_post_if_return_var_min.hako
- Pattern: x=1; if flag==1 { x=2 }; print(x)
- Tests join_k continuation env merge
- Add phase129_if_only_post_if_return_var_vm.sh
- Expected output: 2 (x updated in then branch)
- Dev-only: NYASH_JOINIR_DEV=1 HAKO_JOINIR_STRICT=1
Note: Currently passes via fallback path (non-Normalized)
P1 implementation (join_k materialization) is next step