diff --git a/src/app/main.cpp b/src/app/main.cpp
index c94cd8f..5df0741 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -90,6 +90,7 @@
 #include "ApiClient.hpp"
 #include "AuthService.hpp"
 #include "DatasetDimension.hpp"
+#include "DatasetCategory.hpp"
 #include "Credential.hpp"
 #include "Glyphs.hpp"
 #include "Logging.hpp"
@@ -135,6 +136,7 @@
 #include "panels/ObjectExceptionPanel.hpp"
 #include "TileBasemap.hpp"
 #include "panels/columns/ColumnDrawer.hpp"
+#include "panels/columns/CategoryAnalysisTab.hpp"
 #include "panels/columns/Column3DDataset.hpp"
 #include "panels/columns/Column2DDataset.hpp"
 #include "panels/columns/Column3DAnalysis.hpp"
@@ -444,12 +446,15 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
     // 三维分析栏 = 后端 Analysis 行(dd_slice) + 客户端创建的三维体（mock）。生成的三维体是"分析产物"
     //   （设计 §2.1：三维分析栏按 对象/三维体模型/切片 三级树），归三维分析栏（非数据集栏）。
     //   后端列表每次勾选测线全量覆盖，故客户端体单独维护、刷新时合并注入（不被冲掉）。
-    auto lastAnalysisRows = std::make_shared<std::vector<geopro::data::DsRow>>();
-    auto refreshAnalysis = [drawer, scene3dRepo, lastAnalysisRows]() {
-        std::vector<geopro::data::DsRow> rows = *lastAnalysisRows;
+    // 三维分析数据源 = 最近对象树勾选拉取的 ds + 客户端三维体(mock) + 已保存切片；
+    // splitByCategory 后注入 5 段（电阻率/视电阻率/瞬变/三维体/切片）；二维(足迹)经 dim2D 仍走 col2D。
+    auto lastSourceRows = std::make_shared<std::vector<geopro::data::DsRow>>();
+    auto refreshAnalysis = [drawer, scene3dRepo, lastSourceRows]() {
+        std::vector<geopro::data::DsRow> rows = *lastSourceRows;
         for (auto& vr : scene3dRepo->volumeRows()) rows.push_back(std::move(vr));   // 客户端三维体
         for (auto& sr : scene3dRepo->sliceRows()) rows.push_back(std::move(sr));    // 已保存切片(挂父体下)
-        drawer->colAnalysis()->setDatasets(rows);
+        drawer->analysisTab()->setBuckets(geopro::app::splitByCategory(rows));
+        drawer->col2D()->setDatasets(geopro::app::splitByDimension(rows).dim2D);
     };
 
     // 渲染勾选聚合：三维数据集栏（剖面→帘面）+ 三维分析栏（三维体/切片→体素/切片）两套勾选并集
@@ -643,6 +648,69 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
                          *checkedProfiles = ids;
                          pushChecked();
                      });
+
+    // ── 三维分析 tab（5 段）信号接线（Task 12）──────────────────────────────────
+    auto* analysisTab = drawer->analysisTab();
+    // 5 段勾选并集 → 按类型分流渲染：反演剖面→帘面(checkedProfiles)；三维体→体素(checkedAnalysis)；
+    //   切片(dd_slice)→不进控制器，经 syncSlices 在父体上还原。
+    QObject::connect(analysisTab, &geopro::app::CategoryAnalysisTab::checkedDatasetsChanged, sceneCtrl,
+                     [checkedProfiles, checkedAnalysis, checkedSliceIds, syncSlices, pushChecked,
+                      scene3dRepo](const QStringList& ids) {
+                         QStringList profiles, analysis;
+                         checkedSliceIds->clear();
+                         for (const QString& id : ids) {
+                             const std::string s = id.toStdString();
+                             if (scene3dRepo->isSliceDataset(s))
+                                 checkedSliceIds->insert(s);
+                             else if (scene3dRepo->isVolumeDataset(s))
+                                 analysis << id;
+                             else
+                                 profiles << id;  // 反演剖面 → 帘面
+                         }
+                         *checkedProfiles = profiles;
+                         *checkedAnalysis = analysis;
+                         pushChecked();
+                         syncSlices();
+                     });
+    // 段头「+新增三维体」：弹参数对话框 → 组装真实 VoxelGenerateRequest → createVolume(mock) → 刷新。
+    QObject::connect(analysisTab, &geopro::app::CategoryAnalysisTab::generateVolumeRequested, &window,
+                     [&window, &nav, scene3dRepo, refreshAnalysis](const QString& /*dsTypeCode*/,
+                                                                   const QStringList& sourceIds) {
+                         if (sourceIds.isEmpty()) return;
+                         geopro::app::VolumeParamsDialog dlg(static_cast<int>(sourceIds.size()), &window);
+                         if (dlg.exec() != QDialog::Accepted) return;
+                         const geopro::data::VolumeBuildParams p = dlg.params();
+                         geopro::data::VoxelGenerateRequest req;
+                         req.projectId = nav.currentProjectId().toStdString();
+                         req.name = dlg.volumeName().toStdString();
+                         for (const QString& id : sourceIds) req.sourceDatasetIds.push_back(id.toStdString());
+                         req.interpModel =
+                             (p.interpModel == geopro::data::VolumeBuildParams::Model::Kriging) ? "Kriging" : "Idw";
+                         req.cellXY = p.cellXY;
+                         req.cellZ = p.cellZ;
+                         req.power = p.power;
+                         req.maxDist = p.maxDist;
+                         req.colorScaleId = p.colorScaleId;
+                         scene3dRepo->createVolume(req);
+                         refreshAnalysis();
+                     });
+    // 双击数据详情：dd_slice→切片属性；dd_voxel→三维体属性（同 colAnalysis 详情口径）。
+    QObject::connect(analysisTab, &geopro::app::CategoryAnalysisTab::detailRequested, &window,
+                     [&window, scene3dRepo](const QString& dsId, const QString& ddCode, const QString& name) {
+                         if (ddCode == QStringLiteral("dd_slice")) {
+                             geopro::data::I3dSceneRepository::SliceSpec sp;
+                             if (scene3dRepo->sliceSpec(dsId.toStdString(), sp)) {
+                                 geopro::app::SlicePropertiesDialog dlg(name, sp, &window);
+                                 dlg.exec();
+                             }
+                         } else if (ddCode == QStringLiteral("dd_voxel")) {
+                             geopro::data::Api3dRepository::VolumeInfo info;
+                             if (scene3dRepo->volumeInfo(dsId.toStdString(), info)) {
+                                 geopro::app::VolumePropertiesDialog dlg(name, info, &window);
+                                 dlg.exec();
+                             }
+                         }
+                     });
     // O点位置/字体本期 stub（TODO P4：弹框）。
     QObject::connect(c3, &geopro::app::Column3DDataset::oPointClicked, vtkWidget,
                      []() { /* TODO P4: O点位置弹框 */ });
@@ -1115,27 +1183,22 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
     auto generation = std::make_shared<unsigned long long>(0);
     QObject::connect(
         objectTree, &geopro::app::ObjectTreePanel::checkedTmsChanged, &window,
-        [&projectRepo, &nav, drawer, emptyState, generation, lastAnalysisRows,
+        [&projectRepo, &nav, drawer, emptyState, generation, lastSourceRows,
          refreshAnalysis](const QStringList& tmIds) {
             const unsigned long long myGen = ++(*generation);
             emptyState->setVisible(tmIds.isEmpty());  // 有勾选→隐藏引导层，露出中央渲染
             if (tmIds.isEmpty()) {
-                drawer->col3D()->setDatasets({});
-                drawer->col2D()->setDatasets({});
-                *lastAnalysisRows = {};
-                refreshAnalysis();  // 后端分析行清空，但客户端三维体仍驻留三维分析栏
+                *lastSourceRows = {};
+                refreshAnalysis();  // 清空 5 段(客户端三维体仍驻留) + col2D
                 return;
             }
-            // 多 TM 异步汇总：每个 TM 取整棵 ds 子树,全部回来后按维度分发到三栏。
+            // 多 TM 异步汇总：每个 TM 取整棵 ds 子树,全部回来后 splitByCategory 分发到 5 段。
             auto acc = std::make_shared<std::vector<geopro::data::DsRow>>();
             auto remaining = std::make_shared<int>(tmIds.size());
-            auto finish = [acc, drawer, generation, myGen, lastAnalysisRows, refreshAnalysis]() {
+            auto finish = [acc, generation, myGen, lastSourceRows, refreshAnalysis]() {
                 if (*generation != myGen) return;   // 已被更新的勾选批次取代→丢弃陈旧结果
-                geopro::app::DimBuckets b = geopro::app::splitByDimension(*acc);
-                drawer->col3D()->setDatasets(b.dim3D);
-                drawer->col2D()->setDatasets(b.dim2D);
-                *lastAnalysisRows = b.analysis;
-                refreshAnalysis();  // 后端切片 + 客户端三维体合并注入三维分析栏
+                *lastSourceRows = *acc;             // 全部对象树 ds 作分析数据源
+                refreshAnalysis();                  // splitByCategory→5段 + 合并三维体/切片 + dim2D→col2D
             };
             for (const QString& tm : tmIds) {
                 geopro::data::NavRequest* req = projectRepo.loadRowsAsync(
@@ -1208,14 +1271,12 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
 
     // 切换到「不同项目」时先清空中央区，避免新项目残留旧项目的三栏数据与 VTK 渲染。
     //   仅真正换项目用（delete-refresh 等 switchProject(currentProjectId) 不走此处，避免误清）。
-    auto clearCentral = [drawer, sceneCtrl, emptyState, checkedProfiles, checkedAnalysis,
-                         pushChecked, lastAnalysisRows, refreshAnalysis, checkedSliceIds,
+    auto clearCentral = [sceneCtrl, emptyState, checkedProfiles, checkedAnalysis,
+                         pushChecked, lastSourceRows, refreshAnalysis, checkedSliceIds,
                          syncSlices, basemap, sceneView]() {
-        // 三栏清空（col2D/col3D setDatasets({}) 会顺带发空勾选 → setChecked2DDatasets({})/帘面清空）。
-        drawer->col3D()->setDatasets({});
-        drawer->col2D()->setDatasets({});
-        *lastAnalysisRows = {};
-        refreshAnalysis();  // 后端分析行清空（客户端三维体仍按设计驻留三维分析栏）
+        // 数据源清空 → 5 段 + col2D 清空（refreshAnalysis 内 setBuckets/dim2D；客户端三维体仍驻留）。
+        *lastSourceRows = {};
+        refreshAnalysis();
         // 勾选集清空并下发空到 VTK（帘面/体素/切片/2D 足迹全部撤场）。
         checkedProfiles->clear();
         checkedAnalysis->clear();