fix: resolve EM overview marker and segment overlaps

ClumsyPilot/tests/TrajectoryPlanningVisualizationVerificationHost/SampleSnapshotFactory.cs

@@ -60,13 +60,15 @@ internal static class SampleSnapshotFactory
             new VisualizationPose(2d + offset, 1d, 0d),
             new[]
             {
+                new VisualizationPolyline("active-segment", "活动方向段", "active-segment", VisualizationLineStyle.Solid,
+                    Points((0d, 1d), (3d, 1d), (6d, 2d))),
                 new VisualizationPolyline("previous", "上一轮轨迹", "previous", VisualizationLineStyle.Dashed, Points((1d, 1d), (2.5d, 1d), (4d, 1.3d))),
                 new VisualizationPolyline("current", "当前轨迹", "current", VisualizationLineStyle.Solid, Points((2d + offset, 1d), (3.8d + offset, 1.2d), (5.8d + offset, 1.9d)))
             },
             new[]
             {
                 new VisualizationMarker("vehicle", "vehicle", "车辆", new VisualizationPoint(2d + offset, 1d)),
-                new VisualizationMarker("plan-start", "plan-start", "计划起点", new VisualizationPoint(2d + offset, 1d)),
+                new VisualizationMarker("plan-start", "plan-start", "计划起点", new VisualizationPoint(0d, 1d)),
                 new VisualizationMarker("gear-switch-end", "gear-switch-end", "换向点 1 / s_end", new VisualizationPoint(6d, 2d))
             },
             CreateCharts(offset),

ClumsyPilot/tests/TrajectoryPlanningVisualizationVerificationHost/WebAssetChecks.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using TrajectoryPlanningVisualization;
 
@@ -65,6 +66,8 @@ internal static class WebAssetChecks
             "vehicle marker no longer uses world-scale heavy strokes");
         Verification.True(css.Contains(".marker-vehicle"), "vehicle marker semantic class");
         Verification.True(css.Contains(".marker-plan-start"), "plan start marker semantic class");
+        Verification.True(css.Contains(".marker-plan-start { fill: none;"),
+            "plan start marker remains hollow when it overlaps the smoothed-path start");
         Verification.True(css.Contains(".marker-gear-switch"), "gear-switch marker semantic class");
         Verification.True(css.Contains(".marker-final-goal"), "final goal marker semantic class");
         Verification.True(js.Contains("末点后无时间区间"), "jerk terminal explanation");
@@ -85,6 +88,29 @@ internal static class WebAssetChecks
             "overview builds legend entries from current snapshot data");
         Verification.True(js.Contains("legendChinese"),
             "overview reuses exported Chinese polyline legends");
+        Verification.True(
+            js.Contains("smoothStartMarker.labelChinese || \"平滑路径起点\"") &&
+            js.Contains("planStartMarker.labelChinese || \"EM 规划起点\"") &&
+            js.Contains("vehicleMarker.labelChinese || \"当前车辆\"") &&
+            js.Contains("gearMarker.labelChinese || \"换向点 / s_end\"") &&
+            js.Contains("goalMarker.labelChinese || \"平滑路径终点\""),
+            "overview marker legends prefer the first matching marker label with canonical fallbacks");
+        Verification.True(js.Contains("const hasDynamicActiveSegment = dynamicLines.some("),
+            "overview detects whether the frame supplies a dynamic active segment");
+        Verification.True(js.Contains(
+                ".filter(segment => !hasDynamicActiveSegment || segment.segmentIndex !== frame.activeSegmentIndex)"),
+            "overview omits the matching static segment when its dynamic active segment exists");
+        Verification.True(js.Contains("if (active)") &&
+                !js.Contains("if (active || directionSegments.length)"),
+            "overview legend activates the current direction segment from dynamic data only");
+        int renderWorldStart = js.IndexOf("function renderWorld()", StringComparison.Ordinal);
+        int renderDynamicLines = js.IndexOf("const dynamicLines = safeArray(frame.dynamicPolylines);",
+            renderWorldStart, StringComparison.Ordinal);
+        int renderStaticSegments = js.IndexOf("safeArray(snapshot.directionSegments)",
+            renderDynamicLines, StringComparison.Ordinal);
+        Verification.True(renderWorldStart >= 0 && renderDynamicLines > renderWorldStart &&
+                renderStaticSegments > renderDynamicLines,
+            "overview derives dynamic lines before rendering static direction segments");
         Verification.True(js.Contains("atob"), "compact occupancy bitset is decoded in browser");
         Verification.True(!html.Contains("http://") && !html.Contains("https://"), "page has no CDN URL");
     }
@@ -100,6 +126,14 @@ internal static class WebAssetChecks
             "smoke snapshot exposes the smoothed comparison path");
         Verification.True(staticSnapshot.StaticMarkers.Any(marker => marker.Kind == "smooth-start"),
             "smoke snapshot exposes the smoothed-path start marker");
+        Verification.Equal(1, dynamicSnapshot.DynamicPolylines.Count(line => line.Kind == "active-segment"),
+            "smoke snapshot has exactly one dynamic active segment");
+        VisualizationMarker smoothStart = staticSnapshot.StaticMarkers.Single(marker => marker.Kind == "smooth-start");
+        VisualizationMarker planStart = dynamicSnapshot.DynamicMarkers.Single(marker => marker.Kind == "plan-start");
+        Verification.NearlyEqual(smoothStart.Position.X, planStart.Position.X,
+            "smoke snapshot overlaps smoothed-path and plan-start x coordinates");
+        Verification.NearlyEqual(smoothStart.Position.Y, planStart.Position.Y,
+            "smoke snapshot overlaps smoothed-path and plan-start y coordinates");
         Verification.Equal(2, staticSnapshot.DirectionSegments.Count, "smoke snapshot has two direction segments");
         Verification.True(staticSnapshot.StaticMarkers.Any(marker => marker.Kind == "gear-switch"), "smoke snapshot has a gear marker");
         Verification.True(staticSnapshot.ConfigurationGroups.Count > 0, "smoke snapshot has effective configuration");