feat(panels): 数据/文件列表卡片化(标题+元信息双行+选中竖条)（规范§6.2）

src/app/main.cpp

@@ -544,9 +544,11 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
     auto* datasetTabs = new QTabWidget();
     auto* datasetList = new QListWidget();
     applyListSelection(datasetList);
+    geopro::app::applyDatasetCardDelegate(datasetList);
     datasetTabs->addTab(datasetList, QStringLiteral("数据"));
     auto* fileList = new QListWidget();
     applyListSelection(fileList);
+    geopro::app::applyDatasetCardDelegate(fileList);
     datasetTabs->addTab(fileList, QStringLiteral("文件"));
     auto* datasetDock = new ads::CDockWidget(QStringLiteral("数据真实显示栏"));
     auto* datasetBox = wrapWithHeader(

src/app/panels/DatasetListPanel.cpp

@@ -3,7 +3,13 @@
 #include <QColor>
 #include <QListWidget>
 #include <QListWidgetItem>
+#include <QObject>
+#include <QPainter>
+#include <QPainterPath>
 #include <QString>
+#include <QStyledItemDelegate>
+
+#include "Theme.hpp"
 
 namespace geopro::app {
 
@@ -14,6 +20,88 @@ QString humanSize(long long b) {
     if (kb < 1024.0) return QStringLiteral("%1 KB").arg(kb, 0, 'f', 1);
     return QStringLiteral("%1 MB").arg(kb / 1024.0, 0, 'f', 1);
 }
+
+// 数据/文件列表卡片委托：标题+元信息双行、悬停/选中圆角高亮 + 选中左 2px 强调竖条（规范§6.2）。
+// 特殊行（加载更多 / 占位提示）退回为居中纯文本，不画卡片。
+class DatasetCardDelegate : public QStyledItemDelegate {
+public:
+    using QStyledItemDelegate::QStyledItemDelegate;
+
+    QSize sizeHint(const QStyleOptionViewItem&, const QModelIndex& idx) const override {
+        const bool special =
+            idx.data(kDsLoadMoreRole).toBool() || !(idx.flags() & Qt::ItemIsSelectable);
+        return QSize(0, special ? 34 : 52);
+    }
+
+    void paint(QPainter* p, const QStyleOptionViewItem& opt, const QModelIndex& idx) const override {
+        p->save();
+        p->setRenderHint(QPainter::Antialiasing, true);
+        const QString disp = idx.data(Qt::DisplayRole).toString();
+
+        // 「加载更多」：居中强调色文本（hover 时加底）。
+        if (idx.data(kDsLoadMoreRole).toBool()) {
+            if (opt.state & QStyle::State_MouseOver) {
+                QPainterPath bgp;
+                bgp.addRoundedRect(opt.rect.adjusted(4, 2, -4, -2), 6, 6);
+                p->fillPath(bgp, geopro::app::tokenColor("bg/hover"));
+            }
+            p->setPen(geopro::app::tokenColor("accent/primary"));
+            p->drawText(opt.rect, Qt::AlignCenter, disp);
+            p->restore();
+            return;
+        }
+        // 占位提示行（不可选）：居中淡色文本。
+        if (!(idx.flags() & Qt::ItemIsSelectable)) {
+            p->setPen(geopro::app::tokenColor("text/disabled"));
+            p->drawText(opt.rect, Qt::AlignCenter, disp);
+            p->restore();
+            return;
+        }
+
+        // 卡片
+        const QRect r = opt.rect.adjusted(4, 2, -4, -2);
+        const bool selected = opt.state & QStyle::State_Selected;
+        const bool hover = opt.state & QStyle::State_MouseOver;
+        if (selected || hover) {
+            QPainterPath path;
+            path.addRoundedRect(r, 6, 6);
+            p->fillPath(path, geopro::app::tokenColor(selected ? "bg/selected" : "bg/hover"));
+        }
+        if (selected) {  // 左 2px 强调竖条（规范§6.2）
+            p->fillRect(QRect(r.left(), r.top() + 4, 2, r.height() - 8),
+                        geopro::app::tokenColor("accent/primary"));
+        }
+
+        QString title = disp, meta;
+        const int nl = disp.indexOf(QLatin1Char('\n'));
+        if (nl >= 0) {
+            title = disp.left(nl);
+            meta = disp.mid(nl + 1);
+        }
+
+        const QRect textR = r.adjusted(14, 6, -12, -6);
+        // 标题
+        QFont tf = opt.font;
+        tf.setPixelSize(geopro::app::scaledPx(13));
+        p->setFont(tf);
+        p->setPen(geopro::app::tokenColor("text/primary"));
+        const QRect titleR(textR.left(), textR.top(), textR.width(), textR.height() / 2);
+        p->drawText(titleR, Qt::AlignLeft | Qt::AlignVCenter,
+                    p->fontMetrics().elidedText(title, Qt::ElideRight, titleR.width()));
+        // 元信息
+        if (!meta.isEmpty()) {
+            QFont mf = opt.font;
+            mf.setPixelSize(geopro::app::scaledPx(11));
+            p->setFont(mf);
+            p->setPen(geopro::app::tokenColor("text/tertiary"));
+            const QRect metaR(textR.left(), textR.center().y() + 1, textR.width(),
+                              textR.height() / 2);
+            p->drawText(metaR, Qt::AlignLeft | Qt::AlignVCenter,
+                        p->fontMetrics().elidedText(meta, Qt::ElideRight, metaR.width()));
+        }
+        p->restore();
+    }
+};
 }  // namespace
 
 void populateDatasetList(QListWidget* list, const std::vector<geopro::data::DsRow>& rows, bool append) {
@@ -53,4 +141,13 @@ void populateFileList(QListWidget* list, const std::vector<geopro::data::DsRow>&
     }
 }
 
+void applyDatasetCardDelegate(QListWidget* list) {
+    if (!list) return;
+    list->setItemDelegate(new DatasetCardDelegate(list));
+    list->setMouseTracking(true);  // 让委托收到 hover 状态
+    list->setSpacing(0);           // 卡间距由委托内边距控制
+    QObject::connect(&ThemeManager::instance(), &ThemeManager::changed, list,
+                     [list]() { list->viewport()->update(); });
+}
+
 }  // namespace geopro::app

src/app/panels/DatasetListPanel.hpp

@@ -18,4 +18,7 @@ void populateDatasetList(QListWidget* list, const std::vector<geopro::data::DsRo
 // 文件页签：每条 = 文件名 +（可读大小）；UserRole 存 dsId、+2 存文件 url。空时显示占位。
 void populateFileList(QListWidget* list, const std::vector<geopro::data::DsRow>& rows, bool append);
 
+// 给数据/文件列表套用卡片委托（标题+元信息双行、悬停/选中圆角高亮+左强调竖条，规范§6.2）。
+void applyDatasetCardDelegate(QListWidget* list);
+
 }  // namespace geopro::app