新增解释器核心WASM验证

结论：已建立基于LinuxCNC解释器源码的最小WASM核心构建和minimal_linear夹具验证，并接入host smoke。

wasm-port/tools/build_wasm_core.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+VENDOR_DIR="$ROOT_DIR/vendor/linuxcnc"
+WRAP_DIR="$ROOT_DIR/runtime/core/linuxcnc_wrap"
+SHIM_DIR="$ROOT_DIR/runtime/core/shims"
+INCLUDE_DIR="$ROOT_DIR/runtime/core/include"
+OUT_DIR="$ROOT_DIR/build/wasm/core"
+
+mkdir -p "$OUT_DIR"
+
+COMMON_FLAGS=(
+  -std=c++20
+  -O2
+  -D_GNU_SOURCE
+  -DM_PI=3.14159265358979323846
+  -DOBJECT_FWD_DWA2002724_HPP
+  -DUNIT_TEST
+  -DLINUXCNC_STANDALONE_USE_RS274_PRE_STATE
+  -DEMC2_HOME=\"/standalone\"
+  -include "$SHIM_DIR/linuxcnc_wasm_compat.hh"
+  -I"$WRAP_DIR"
+  -I"$SHIM_DIR"
+  -I"$INCLUDE_DIR"
+  -I"$VENDOR_DIR/src"
+  -I"$VENDOR_DIR/src/rtapi"
+  -I"$VENDOR_DIR/src/emc"
+  -I"$VENDOR_DIR/src/emc/nml_intf"
+  -I"$VENDOR_DIR/src/emc/motion"
+  -I"$VENDOR_DIR/src/emc/tp"
+  -I"$VENDOR_DIR/src/emc/kinematics"
+  -I"$VENDOR_DIR/src/emc/ini"
+  -I"$VENDOR_DIR/src/libnml/posemath"
+)
+
+INTERP_CORE_SOURCES=(
+  "$VENDOR_DIR/src/emc/rs274ngc/modal_state.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_array.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_internal.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_read.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_check.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_arc.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_inverse.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_execute.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_convert.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_cycles.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_g7x.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_queue.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_find.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_namedparams.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_write.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/interp_o_word.cc"
+  "$VENDOR_DIR/src/emc/rs274ngc/rs274ngc_pre.cc"
+  "$WRAP_DIR/linuxcnc_hal_adapter.cpp"
+  "$WRAP_DIR/linuxcnc_emc_status_runtime.cpp"
+  "$WRAP_DIR/linuxcnc_interp_edge_stubs.cpp"
+  "$WRAP_DIR/linuxcnc_runtime_state_stubs.cpp"
+  "$WRAP_DIR/linuxcnc_tool_adapter.cpp"
+  "$WRAP_DIR/linuxcnc_interp_minimal_runtime.cpp"
+  "$WRAP_DIR/linuxcnc_wasm_posix_stubs.cpp"
+  "$VENDOR_DIR/src/emc/ini/inifile.cc"
+)
+
+emcc \
+  "${COMMON_FLAGS[@]}" \
+  "${INTERP_CORE_SOURCES[@]}" \
+  "$WRAP_DIR/linuxcnc_interp_wasm.cpp" \
+  -o "$OUT_DIR/linuxcnc_interp.js" \
+  -s MODULARIZE=1 \
+  -s EXPORT_ES6=1 \
+  -s ENVIRONMENT=web,node \
+  -s ALLOW_MEMORY_GROWTH=1 \
+  -s STACK_SIZE=2MB \
+  -s NO_EXIT_RUNTIME=1 \
+  -s EXPORTED_FUNCTIONS='["_malloc","_free","_lcinterp_run_program","_lcinterp_free_string"]' \
+  -s EXPORTED_RUNTIME_METHODS='["UTF8ToString","stringToUTF8","lengthBytesUTF8"]'