按建议继续完成后续工作

结论：upstream rs274 side-by-side 基线已扩展到 NURBS G5/G6 调度边界；控制点细节仍由 standalone fixture 覆盖，完整 native 验证已通过。

wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh

@@ -19,6 +19,8 @@ FIXTURES=(
   plane_selection
   modal_incremental
   numbered_params
+  nurbs_g5_semantics
+  nurbs_g6_semantics
   oword_subroutine
   percent_file_finish
   position_params
@@ -75,6 +77,16 @@ normalize_standalone_events() {
         next
       }
 
+      if (line ~ /^NURBS_G5_FEED /) {
+        print "NURBS_G5_FEED"
+        next
+      }
+
+      if (line ~ /^NURBS_G6_FEED /) {
+        print "NURBS_G6_FEED"
+        next
+      }
+
       if (line == "MIST_ON" || line == "MIST_OFF" || line == "FLOOD_ON" || line == "FLOOD_OFF" ||
           line == "ENABLE_FEED_OVERRIDE" || line == "DISABLE_FEED_OVERRIDE" ||
           line == "DISABLE_ADAPTIVE_FEED" || line == "ENABLE_ADAPTIVE_FEED" ||
@@ -366,6 +378,11 @@ normalize_upstream_rs274_output() {
         next
       }
 
+      if (line ~ /^NURBS_G5_FEED\(/) {
+        print "NURBS_G5_FEED"
+        next
+      }
+
       if (line ~ /^COMMENT\("/) {
         value = args_of(line)
         sub(/^"/, "", value)
@@ -585,6 +602,11 @@ normalize_upstream_rs274_output() {
         next
       }
     }
+
+    /^N\.\.\.\.\. saicanon NURBS_G6_FEED_/ && seen_reset {
+      print "NURBS_G6_FEED"
+      next
+    }
   '
 }