diff --git a/src/app/main.cpp b/src/app/main.cpp
index 0d557bc..22925f8 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -508,6 +508,11 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
                      detailPanel, [detailPanel](const QString& dsId) {
                          detailPanel->focusDataset(dsId);
                      });
+    QObject::connect(&detailCtrl, &geopro::controller::DatasetDetailController::loadFailed, &window,
+                     [&window](const QString& dsId, const QString& msg) {
+                         window.statusBar()->showMessage(
+                             QStringLiteral("数据集 %1 加载失败：%2").arg(dsId, msg), 5000);
+                     });
 
     // ── 详情面板切 Tab → 反向高亮数据集列表对应行 ──
     QObject::connect(detailPanel, &geopro::app::DatasetDetailPanel::activeDatasetChanged,
diff --git a/src/app/panels/DatasetDetailPanel.cpp b/src/app/panels/DatasetDetailPanel.cpp
index 4f3e59f..a5267a3 100644
--- a/src/app/panels/DatasetDetailPanel.cpp
+++ b/src/app/panels/DatasetDetailPanel.cpp
@@ -4,7 +4,7 @@ namespace geopro::app {
 
 DatasetDetailPanel::DatasetDetailPanel(QWidget* parent) : QTabWidget(parent) {
     setTabsClosable(true);
-    connect(this, &QTabWidget::tabCloseRequested, this, [this](int i) { delete widget(i); });
+    connect(this, &QTabWidget::tabCloseRequested, this, [this](int i) { widget(i)->deleteLater(); });
     connect(this, &QTabWidget::currentChanged, this, [this](int i) {
         if (auto* p = qobject_cast<DatasetDetailPage*>(widget(i)))
             emit activeDatasetChanged(p->dsId());
diff --git a/src/app/panels/chart/DatasetChartView.cpp b/src/app/panels/chart/DatasetChartView.cpp
index 60ce1ed..d1dff50 100644
--- a/src/app/panels/chart/DatasetChartView.cpp
+++ b/src/app/panels/chart/DatasetChartView.cpp
@@ -1,4 +1,5 @@
 #include "panels/chart/DatasetChartView.hpp"
+#include <algorithm>
 #include <QGraphicsScene>
 #include <QGraphicsPathItem>
 #include <QGraphicsRectItem>
@@ -24,13 +25,18 @@ DatasetChartView::DatasetChartView(QWidget* parent)
 }
 
 void DatasetChartView::clearChart() {
+    // scene_->clear() 删除场景中的所有 item（含 anomalyItems_ 所指向的对象）；
+    // anomalyItems_.clear() 随后清空向量中的悬空指针。
+    // 二者必须成对、顺序不可颠倒：若先 clear() 后仍持有指针，rebuildAnomalyItems
+    // 中的 delete 会对已释放对象 double-free；若先清向量、后继续操作旧指针同样 UB。
     scene_->clear(); anomalyItems_.clear();
 }
 
 void DatasetChartView::showScatter(const geopro::core::ScatterField& f, const geopro::core::ColorScale& cs) {
     clearChart();
     const double sz = 0.6;  // 方块边长（数据单位，近似 web 方点）
-    for (size_t i = 0; i < f.v.size(); ++i) {
+    const size_t n = std::min({f.x.size(), f.y.size(), f.v.size()});
+    for (size_t i = 0; i < n; ++i) {
         auto* r = scene_->addRect(f.x[i] - sz / 2, f.y[i] - sz / 2, sz, sz,
                                   QPen(Qt::white, 0), QBrush(toQ(cs.colorAt(f.v[i]))));
         r->setPen(QPen(Qt::white, 0));  // 白描边
@@ -81,6 +87,16 @@ void DatasetChartView::rebuildAnomalyItems() {
     for (int i = 0; i < static_cast<int>(anomalies_.size()); ++i) {
         if (hidden_.count(i)) continue;
         const auto& a = anomalies_[i];
+        if (a.localPts.empty()) continue;
+        if (static_cast<int>(a.markType) == 1) {  // 点：小方块标记
+            const double s = 0.8;
+            auto* dot = scene_->addRect(a.localPts[0].x - s/2, a.localPts[0].y - s/2, s, s,
+                                        QPen(QColor(QString::fromStdString(a.lineColor)), 0),
+                                        QBrush(QColor(QString::fromStdString(a.lineColor))));
+            dot->setZValue(2);
+            anomalyItems_.push_back(dot);
+            continue;
+        }
         if (a.localPts.size() < 2) continue;
         QPainterPath path; path.moveTo(a.localPts[0].x, a.localPts[0].y);
         for (size_t k = 1; k < a.localPts.size(); ++k) path.lineTo(a.localPts[k].x, a.localPts[k].y);
diff --git a/src/controller/DatasetDetailController.cpp b/src/controller/DatasetDetailController.cpp
index fb03556..d3e4a48 100644
--- a/src/controller/DatasetDetailController.cpp
+++ b/src/controller/DatasetDetailController.cpp
@@ -7,6 +7,13 @@ DatasetDetailController::DatasetDetailController(data::IDatasetRepository& repo,
     : QObject(parent), repo_(repo) {}
 
 void DatasetDetailController::openDataset(const QString& dsId, const QString& ddCode) {
+    if (busy_) return;                              // 防重入（同步网络期间 QEventLoop 可重入）
+    busy_ = true;
+    if (ddCode != QLatin1String("dd_inversion_data")) {  // 首版仅支持 ERT 反演
+        busy_ = false;
+        emit loadFailed(dsId, QStringLiteral("暂不支持该数据类型的预览"));
+        return;
+    }
     const std::string id = dsId.toStdString();
     try {
         ChartData d;
@@ -17,8 +24,10 @@ void DatasetDetailController::openDataset(const QString& dsId, const QString& dd
         d.grid = repo_.loadGrid(id);
         d.gridScale = repo_.loadColorScale(id);
         d.anomalies = repo_.loadAnomalies(id);
+        busy_ = false;
         emit chartReady(d);
     } catch (const std::exception& e) {
+        busy_ = false;
         emit loadFailed(dsId, QString::fromStdString(e.what()));
     }
 }
diff --git a/src/controller/DatasetDetailController.hpp b/src/controller/DatasetDetailController.hpp
index 43e5993..31a753b 100644
--- a/src/controller/DatasetDetailController.hpp
+++ b/src/controller/DatasetDetailController.hpp
@@ -31,5 +31,6 @@ signals:
     void loadFailed(const QString& dsId, const QString& message);
 private:
     data::IDatasetRepository& repo_;
+    bool busy_ = false;
 };
 }  // namespace geopro::controller
diff --git a/src/render/ContourBands.cpp b/src/render/ContourBands.cpp
index 894ed34..3f6a53c 100644
--- a/src/render/ContourBands.cpp
+++ b/src/render/ContourBands.cpp
@@ -130,7 +130,7 @@ ContourBandsResult buildContourBands(const Grid& g, const ColorScale& cs, const
     banded->SetInputConnection(surf->GetOutputPort());
     banded->SetNumberOfContours(static_cast<int>(stops.size()));
     for (int i = 0; i < static_cast<int>(stops.size()); ++i) banded->SetValue(i, stops[i]);
-    banded->GenerateContourEdgesOn();
+    if (opt.makeLines) banded->GenerateContourEdgesOn();
     banded->SetScalarModeToValue();
     banded->Update();
 
@@ -152,21 +152,23 @@ ContourBandsResult buildContourBands(const Grid& g, const ColorScale& cs, const
         out.bands.push_back(std::move(bp));
     }
 
-    // port1：等值线（polylines）+ DP 简化。
-    vtkPolyData* edges = banded->GetContourEdgesOutput();
-    if (edges) {
-        edges->BuildCells();
-        const vtkIdType nLines = edges->GetNumberOfCells();
-        for (vtkIdType c = 0; c < nLines; ++c) {
-            vtkCell* cell = edges->GetCell(c);
-            vtkPoints* cp = cell->GetPoints();
-            ContourLine cl; cl.level = 0.0;
-            for (vtkIdType p = 0; p < cp->GetNumberOfPoints(); ++p) {
-                double xyz[3]; cp->GetPoint(p, xyz);
-                cl.pts.push_back(Vec2{xyz[0], xyz[1]});
+    // port1：等值线（polylines）+ DP 简化。仅 makeLines=true 时生成（否则不提取）。
+    if (opt.makeLines) {
+        vtkPolyData* edges = banded->GetContourEdgesOutput();
+        if (edges) {
+            edges->BuildCells();
+            const vtkIdType nLines = edges->GetNumberOfCells();
+            for (vtkIdType c = 0; c < nLines; ++c) {
+                vtkCell* cell = edges->GetCell(c);
+                vtkPoints* cp = cell->GetPoints();
+                ContourLine cl; cl.level = 0.0;
+                for (vtkIdType p = 0; p < cp->GetNumberOfPoints(); ++p) {
+                    double xyz[3]; cp->GetPoint(p, xyz);
+                    cl.pts.push_back(Vec2{xyz[0], xyz[1]});
+                }
+                simplifyInPlace(cl.pts, opt.simplifyTol);
+                if (cl.pts.size() >= 2) out.lines.push_back(std::move(cl));
             }
-            simplifyInPlace(cl.pts, opt.simplifyTol);
-            if (cl.pts.size() >= 2) out.lines.push_back(std::move(cl));
         }
     }
     return out;