按建议，继续完成后续工作

结论：probe_semantics 已纳入 native LinuxCNC rs274 side-by-side fixture baseline，验证文档已同步，完整 native probes 验证通过。

wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh

@@ -24,6 +24,7 @@ FIXTURES=(
   oword_subroutine
   percent_file_finish
   position_params
+  probe_semantics
   program_end_modal_reset
   spindle_orient
   threading_sync
@@ -328,6 +329,16 @@ normalize_standalone_events() {
         next
       }
 
+      if (line == "TURN_PROBE_ON" || line == "TURN_PROBE_OFF") {
+        print line
+        next
+      }
+
+      if (line ~ /^STRAIGHT_PROBE /) {
+        print "STRAIGHT_PROBE"
+        next
+      }
+
       if (line ~ /^STRAIGHT_(TRAVERSE|FEED) /) {
         split(line, fields, /[[:space:]]+/)
         for (i in fields) {
@@ -598,6 +609,18 @@ normalize_upstream_rs274_output() {
         next
       }
 
+      if (line == "TURN_PROBE_ON()" || line == "TURN_PROBE_OFF()") {
+        value = line
+        sub(/\(\)$/, "", value)
+        print value
+        next
+      }
+
+      if (line ~ /^STRAIGHT_PROBE\(/) {
+        print "STRAIGHT_PROBE"
+        next
+      }
+
       if (line ~ /^STRAIGHT_(TRAVERSE|FEED)\(/) {
         op = line
         sub(/\(.*/, "", op)