give the selection cards their own parts instead of label blobs

src/ui/selection/StatRow.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <QString>
+#include <QWidget>
+
+class QLabel;
+
+// One label/value line: the name on the left, the value hard right
+// (REQ-UI-SELECTION-CARD). The panel's plainest part, shared by the ship and station
+// stats, the debris scrap, the HQ block stock, and the multi-selection's total cost.
+//
+// Like the other card parts it knows nothing about the simulation: it is given the two
+// strings and lays them out.
+class StatRow : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit StatRow(const QString& label, QWidget* parent = nullptr);
+
+    void setLabel(const QString& label);
+    void setValue(const QString& value);
+    // Draws the value in the palette's highlight color rather than its text color, for
+    // the one value a card is really about.
+    void setValueEmphasized(bool emphasized);
+    // Indents the row, so it reads as belonging to the row above it -- the scrap total
+    // under a debris count (REQ-UI-FIELD-MULTI-SELECTION).
+    void setIndented(bool indented);
+
+private:
+    QLabel* m_labelLabel;
+    QLabel* m_valueLabel;
+};