按提示词结论补 native source 边界依据锁

test-linuxcnc-source-syntax.sh

@@ -3,6 +3,9 @@ set -euo pipefail
 
 cd "$(dirname "$0")"
 
+# LinuxCNC source basis: this syntax probe checks the native RS274 manifest's
+# core, binding, and tooldata entries from LinuxCNC src/emc/rs274ngc and
+# src/emc/tooldata before source-object and source-link tests consume them.
 linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
 cxx=${CXX:-g++}
 if [[ -z ${CXX:-} ]] && command -v ccache >/dev/null 2>&1; then