Fix recipe button unclickable on construction site during play

src/ui/SelectedBuildingPanel.h

@@ -59,8 +59,18 @@ private slots:
     void onSplitterFilterChanged();
 
 private:
+    // Why the selection display is being refreshed. A periodic tick only needs a
+    // lightweight content update (e.g. a construction site's progress label),
+    // whereas an applied player command may have changed the configuration and
+    // needs a full structural rebuild.
+    enum class RefreshReason
+    {
+        PeriodicTick,
+        CommandApplied
+    };
+
     void onSelectionChanged(const std::vector<BuildingId>& ids);
-    void refreshSelectionDisplay();
+    void refreshSelectionDisplay(RefreshReason reason);
     void rebuild();
     void hideAllWidgets();
     void clearContent();
@@ -68,6 +78,7 @@ private:
     void buildSingle(BuildingId id);
     void buildMulti(const std::vector<BuildingId>& ids);
     void refreshBuffers(const Building* b);
+    void refreshSiteProgress(const ConstructionSite* s);
     void updateShipyardLayoutWidgets(BuildingType type,
                                      const std::string& recipeId,
                                      const std::optional<ShipLayoutConfig>& shipLayout);