- BuildBox.emit_program_json_v0: use BundleResolver via env (HAKO_BUNDLE_ALIAS_TABLE, HAKO_REQUIRE_MODS) - selfhost_build.sh: add --mir to emit MIR(JSON); document HAKO_USE_BUILDBOX for emit-only path
- Add tools/selfhost/selfhost_build.sh: Stage‑B emit(JSON v0) + optional Core‑Direct (in-proc) run - Add tools/selfhost/README.md - Add opt-in smokes: selfhost_build_return_vm, selfhost_build_binop_vm (SMOKES_ENABLE_SELFHOST=1) This establishes the mixed selfhost route (Hakorune Stage‑B front), ready to expand toward full build.
