src/app/CMakeLists.txt

@@ -82,6 +82,7 @@ add_executable(geopro_desktop WIN32
   panels/columns/Column3DDataset.cpp
   panels/columns/Column3DAnalysis.cpp
   panels/columns/CategorySection.cpp
+  panels/columns/CategoryAnalysisTab.cpp
   panels/columns/ColumnDrawer.cpp
   panels/AnomalyTablePanel.cpp
   panels/LoadingOverlay.cpp

src/app/panels/columns/CategoryAnalysisTab.cpp

@@ -0,0 +1,67 @@
+#include "panels/columns/CategoryAnalysisTab.hpp"
+
+#include <QScrollArea>
+#include <QVBoxLayout>
+
+#include "Theme.hpp"
+#include "panels/columns/CategorySection.hpp"
+
+namespace geopro::app {
+
+CategoryAnalysisTab::CategoryAnalysisTab(geopro::data::DatasetFieldDictionary* dict, QWidget* parent)
+    : QWidget(parent) {
+    auto* outer = new QVBoxLayout(this);
+    outer->setContentsMargins(0, 0, 0, 0);
+    outer->setSpacing(0);
+
+    auto* scroll = new QScrollArea(this);
+    scroll->setWidgetResizable(true);
+    scroll->setFrameShape(QFrame::NoFrame);
+    outer->addWidget(scroll, 1);
+
+    auto* content = new QWidget(scroll);
+    auto* col = new QVBoxLayout(content);
+    col->setContentsMargins(0, 0, 0, 0);
+    col->setSpacing(space::kSm);
+
+    for (const CategorySpec& spec : categoryConfigs()) {
+        auto* sec = new CategorySection(spec, dict, content);
+        sections_[spec.id] = sec;
+        const std::string segId = spec.id;
+        connect(sec, &CategorySection::checkedDatasetsChanged, this,
+                [this, segId](const QStringList& ids) {
+                    checkedBySeg_[segId] = ids;
+                    recomputeCheckedUnion();
+                });
+        connect(sec, &CategorySection::generateVolumeRequested, this,
+                &CategoryAnalysisTab::generateVolumeRequested);
+        connect(sec, &CategorySection::detailRequested, this, &CategoryAnalysisTab::detailRequested);
+        col->addWidget(sec);
+    }
+    col->addStretch(1);
+    scroll->setWidget(content);
+}
+
+void CategoryAnalysisTab::setBuckets(const CategoryBuckets& b) {
+    const auto& cfg = categoryConfigs();
+    for (std::size_t i = 0; i < cfg.size() && i < b.segments.size(); ++i) {
+        if (auto* sec = section(cfg[i].id)) sec->setDatasets(b.segments[i]);
+    }
+}
+
+void CategoryAnalysisTab::setStructure(const std::vector<geopro::data::StructNode>& nodes) {
+    for (auto& [id, sec] : sections_) sec->setStructure(nodes);
+}
+
+CategorySection* CategoryAnalysisTab::section(const std::string& id) const {
+    const auto it = sections_.find(id);
+    return it != sections_.end() ? it->second : nullptr;
+}
+
+void CategoryAnalysisTab::recomputeCheckedUnion() {
+    QStringList all;  // ds 归属唯一段，跨段不重复，直接拼接
+    for (const auto& [id, ids] : checkedBySeg_) all += ids;
+    emit checkedDatasetsChanged(all);
+}
+
+}  // namespace geopro::app

src/app/panels/columns/CategoryAnalysisTab.hpp

@@ -0,0 +1,41 @@
+#pragma once
+#include <QStringList>
+#include <QWidget>
+#include <map>
+#include <string>
+#include <vector>
+#include "DatasetCategory.hpp"  // CategoryBuckets
+#include "repo/RepoTypes.hpp"
+
+namespace geopro::data {
+class DatasetFieldDictionary;
+}
+
+namespace geopro::app {
+
+class CategorySection;
+
+// 「三维分析」tab：QScrollArea 竖向堆叠 5 个数据类型大类段（spec §4）。
+// 各段勾选合并为并集上抛；生成/详情请求透传。
+class CategoryAnalysisTab : public QWidget {
+    Q_OBJECT
+public:
+    explicit CategoryAnalysisTab(geopro::data::DatasetFieldDictionary* dict, QWidget* parent = nullptr);
+
+    void setBuckets(const CategoryBuckets& b);                          // 分发到 5 段（与 categoryConfigs 同序）
+    void setStructure(const std::vector<geopro::data::StructNode>& nodes);  // 转发各段
+    CategorySection* section(const std::string& id) const;             // 按 CategorySpec.id 取段
+
+signals:
+    void checkedDatasetsChanged(const QStringList& dsIds);  // 5 段勾选并集
+    void generateVolumeRequested(const QString& dsTypeCode, const QStringList& sourceDsIds);
+    void detailRequested(const QString& dsId, const QString& ddCode, const QString& name);
+
+private:
+    void recomputeCheckedUnion();
+
+    std::map<std::string, CategorySection*> sections_;
+    std::map<std::string, QStringList> checkedBySeg_;  // 各段当前勾选（合并成并集）
+};
+
+}  // namespace geopro::app

src/app/panels/columns/ColumnDrawer.cpp

@@ -2,6 +2,7 @@
 #include "panels/columns/Column3DDataset.hpp"
 #include "panels/columns/Column2DDataset.hpp"
 #include "panels/columns/Column3DAnalysis.hpp"
+#include "panels/columns/CategoryAnalysisTab.hpp"
 #include "Glyphs.hpp"
 #include "Theme.hpp"
 #include <QHBoxLayout>
@@ -10,20 +11,22 @@
 
 namespace geopro::app {
 
-ColumnDrawer::ColumnDrawer(QWidget* parent)
+ColumnDrawer::ColumnDrawer(QWidget* parent, geopro::data::DatasetFieldDictionary* dict)
     : QWidget(parent)
 {
-    // 创建三个栏
-    col3D_      = new Column3DDataset(this);
-    col2D_      = new Column2DDataset(this);
+    col2D_       = new Column2DDataset(this);
+    analysisTab_ = new CategoryAnalysisTab(dict, this);
+    // 过渡：旧三维数据集/三维分析栏仍实例化以兼容 main 现有接线，但隐藏、不入 tab（Task 12 退役）。
+    col3D_       = new Column3DDataset(this);
     colAnalysis_ = new Column3DAnalysis(this);
+    col3D_->hide();
+    colAnalysis_->hide();
 
-    // Tab 容器（body_）
+    // Tab 容器（body_）：两 tab（三维分析[分段] / 二维分析）。
     auto* tabs = new QTabWidget(this);
     body_ = tabs;
-    tabs->addTab(col3D_,       QStringLiteral("三维数据集"));
-    tabs->addTab(col2D_,       QStringLiteral("二维数据集"));
-    tabs->addTab(colAnalysis_, QStringLiteral("三维分析"));
+    tabs->addTab(analysisTab_, QStringLiteral("三维分析"));
+    tabs->addTab(col2D_,       QStringLiteral("二维分析"));
 
     // 折叠按钮：固定宽 18px，垂直拉伸。
     // 用 SVG 图标(makeGlyph)而非 ◀/▶ 文字——三角符(U+25C0/25B6)不在 YaHei，作按钮文字会触发

src/app/panels/columns/ColumnDrawer.hpp

@@ -3,30 +3,39 @@
 
 class QPushButton;
 
+namespace geopro::data {
+class DatasetFieldDictionary;
+}
+
 namespace geopro::app {
 
 class Column3DDataset;
 class Column2DDataset;
 class Column3DAnalysis;
+class CategoryAnalysisTab;
 
-// VTK视图左侧内嵌抽屉：三 tab(三维数据集/二维数据集/三维分析) + 折叠开关。
+// VTK视图左侧内嵌抽屉：两 tab(三维分析[按数据类型分段]/二维分析) + 折叠开关。
+// 旧 col3D_/colAnalysis_ 仍实例化但隐藏（不入 tab），保留访问器供 main 现有接线过渡，Task 12 退役。
 class ColumnDrawer : public QWidget {
     Q_OBJECT
 public:
-    explicit ColumnDrawer(QWidget* parent = nullptr);
+    explicit ColumnDrawer(QWidget* parent = nullptr,
+                          geopro::data::DatasetFieldDictionary* dict = nullptr);
 
-    Column3DDataset* col3D() const { return col3D_; }
+    Column3DDataset* col3D() const { return col3D_; }            // 【过渡，Task 12 删】
     Column2DDataset* col2D() const { return col2D_; }
-    Column3DAnalysis* colAnalysis() const { return colAnalysis_; }
+    Column3DAnalysis* colAnalysis() const { return colAnalysis_; }  // 【过渡，Task 12 删】
+    CategoryAnalysisTab* analysisTab() const { return analysisTab_; }
 
 public slots:
     void toggleCollapsed();
     void expand();  // 强制展开（进入全屏时确保三栏可见）
 
 private:
-    Column3DDataset* col3D_ = nullptr;
+    Column3DDataset* col3D_ = nullptr;         // 【过渡，隐藏不入 tab，Task 12 删】
     Column2DDataset* col2D_ = nullptr;
-    Column3DAnalysis* colAnalysis_ = nullptr;
+    Column3DAnalysis* colAnalysis_ = nullptr;  // 【过渡，隐藏不入 tab，Task 12 删】
+    CategoryAnalysisTab* analysisTab_ = nullptr;
     QWidget* body_ = nullptr;   // QTabWidget，折叠时隐藏
     QPushButton* toggleBtn_ = nullptr;
     bool collapsed_ = false;