接续上一轮：推进浏览器验证与M428配置收拢

结论：已完成浏览器侧真实加载验证，M428/M429/M430 的配置入口进一步从 LinuxCNC INI/HALFILE/REMAP 来源生成，native 与 source-link 验证通过。

test-linuxcnc-wasm-runtime-link.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
+cxx=${CXX:-g++}
+build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_linuxcnc_wasm_runtime_link.XXXXXX")
+manifest=${1:-linuxcnc-rs274-wasm-source-files.txt}
+
+trap 'rm -rf "$build_dir"' EXIT
+LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs.sh "$manifest"
+
+common_flag_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-common-cxxflags.sh --profile core20-sections)
+mapfile -t common_flags <<<"$common_flag_output"
+common_flags+=(-DCNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND)
+
+shim_output=$(./list-linuxcnc-wasm-safe-shims.sh)
+mapfile -t sources <<<"$shim_output"
+
+core_source_output=$(./list-cmake-set-sources.sh cnc_sim_core_sources core/)
+mapfile -t core_sources <<<"$core_source_output"
+sources+=("${core_sources[@]}")
+
+backend_source_output=$(./list-cmake-set-sources.sh cnc_sim_linuxcnc_rs274_backend_sources core/)
+mapfile -t backend_sources <<<"$backend_source_output"
+sources+=("${backend_sources[@]}")
+
+source_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" core full)
+mapfile -t linuxcnc_sources <<<"$source_output"
+sources+=("${linuxcnc_sources[@]}")
+sources+=(core/wasm_shims/cnc_sim_wasm_runtime_probe_main.cc)
+
+objects=()
+object_index=0
+for source in "${sources[@]}"; do
+    obj="$build_dir/source_${object_index}.o"
+    source_flags=()
+    case "$source" in
+        core/src/linuxcnc_genserfuncs_adapter.c|core/src/linuxcnc_xyzab_tdr_kins_adapter.c)
+            source_flags+=(-fpermissive)
+            ;;
+    esac
+    "$cxx" "${common_flags[@]}" "${source_flags[@]}" -c "$source" -o "$obj"
+    objects+=("$obj")
+    object_index=$((object_index + 1))
+done
+
+"$cxx" "${objects[@]}" \
+    -Wl,--gc-sections \
+    -lfmt \
+    -o "$build_dir/cnc_sim_wasm_runtime_probe"
+
+nm -C "$build_dir/cnc_sim_wasm_runtime_probe" > "$build_dir/runtime.symbols"
+grep -F "cnc_sim_parse_program" "$build_dir/runtime.symbols" >/dev/null
+grep -F "parse_linuxcnc_rs274_backend" "$build_dir/runtime.symbols" >/dev/null
+grep -F "parse_gcode_with_backend" "$build_dir/runtime.symbols" >/dev/null
+grep -F "Interp::read(char const*)" "$build_dir/runtime.symbols" >/dev/null
+grep -F "Interp::init()" "$build_dir/runtime.symbols" >/dev/null
+grep -E '(^| )wordexp($| )' "$build_dir/runtime.symbols" >/dev/null
+grep -E '(^| )wordfree($| )' "$build_dir/runtime.symbols" >/dev/null
+
+"$build_dir/cnc_sim_wasm_runtime_probe"
+
+echo "linuxcnc wasm runtime link probe passed"