fix: correct EM observation painter geometry

ClumsyPilot/tests/EMPlannerVerificationHost/TrajectoryObservationVisualizationChecks.cs

@@ -4,6 +4,7 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Reflection;
+using System.Text;
 using System.Threading;
 using MultiWheelC.TrajectoryPlanning.CoarsePath;
 using MultiWheelC.TrajectoryPlanning.CoarsePath.Facade;
@@ -22,6 +23,7 @@ internal static class TrajectoryObservationVisualizationChecks
         VerifiesHandoffUsesSharedReferenceSAndSurvivesProjectionFailure();
         VerifiesDynamicSnapshotContainsObservationEvidenceWithoutCyclePoints();
         VerifiesFullModeSnapshotPublishesSingleCurrentTrajectoryAndBoundaryMarkers();
+        VerifiesPainterBoundarySemanticsMatchWeb();
         VerifiesWebPublisherFusesFaultWithoutStoppingObserverTicks();
         VerifiesWebPublisherGatesAtConfiguredCadenceAndSkipsDisabledOutput();
     }
@@ -386,6 +388,24 @@ internal static class TrajectoryObservationVisualizationChecks
         Verification.Equal(0, factoryCalls, "disabled web visualization does not build dynamic snapshots");
     }
 
+    private static void VerifiesPainterBoundarySemanticsMatchWeb()
+    {
+        string presentationPath = Path.Combine(Directory.GetCurrentDirectory(), "ClumsyPilot",
+            "ParkrobTrajplanner", "tarjplanner_movementtest", "TrajectoryObservationPresentation.cs");
+        string source = new UTF8Encoding(false, true).GetString(File.ReadAllBytes(presentationPath));
+
+        Verification.True(source.Contains("DrawBoundaryMarkers"),
+            "observer painter draws shared boundary markers");
+        foreach (string expected in new[]
+        {
+            "计划起点", "车辆", "换向点 ", " / s_end", "终点 / s_end",
+        })
+        {
+            Verification.True(source.Contains(expected),
+                "observer painter boundary semantics include " + expected);
+        }
+    }
+
     private static PlanningVisualizationStaticSnapshot CreateStaticSnapshot(TrajectoryObservationSettings settings)
     {
         TrajectoryObservationBootstrapResult bootstrap = Bootstrap(settings);