fix bug where splitter filters were not taken over to blueprint

src/lib/config/BlueprintSerializer.cpp

@@ -51,6 +51,24 @@ std::string serialize(const std::vector<Blueprint>& blueprints)
             bldTbl.insert("offset_x",  static_cast<int64_t>(b.offset.x()));
             bldTbl.insert("offset_y",  static_cast<int64_t>(b.offset.y()));
             bldTbl.insert("recipe_id", b.recipeId);
+            if (!b.splitterFilterA.empty())
+            {
+                toml::array filterArr;
+                for (const ItemType& item : b.splitterFilterA)
+                {
+                    filterArr.push_back(item.id);
+                }
+                bldTbl.insert("filter_a", std::move(filterArr));
+            }
+            if (!b.splitterFilterB.empty())
+            {
+                toml::array filterArr;
+                for (const ItemType& item : b.splitterFilterB)
+                {
+                    filterArr.push_back(item.id);
+                }
+                bldTbl.insert("filter_b", std::move(filterArr));
+            }
             if (b.shipLayout.has_value())
             {
                 toml::array modArr;
@@ -138,6 +156,28 @@ std::vector<Blueprint> deserialize(const std::string& tomlContent)
                 bb.offset.setX(static_cast<int>((*bldTbl)["offset_x"].value_or(int64_t{0})));
                 bb.offset.setY(static_cast<int>((*bldTbl)["offset_y"].value_or(int64_t{0})));
                 bb.recipeId = (*bldTbl)["recipe_id"].value_or(std::string{});
+
+                const toml::array* filterAArr = (*bldTbl)["filter_a"].as_array();
+                if (filterAArr)
+                {
+                    for (std::size_t k = 0; k < filterAArr->size(); ++k)
+                    {
+                        const std::optional<std::string> itemId =
+                            (*filterAArr)[k].value<std::string>();
+                        if (itemId) { bb.splitterFilterA.push_back(ItemType{*itemId}); }
+                    }
+                }
+                const toml::array* filterBArr = (*bldTbl)["filter_b"].as_array();
+                if (filterBArr)
+                {
+                    for (std::size_t k = 0; k < filterBArr->size(); ++k)
+                    {
+                        const std::optional<std::string> itemId =
+                            (*filterBArr)[k].value<std::string>();
+                        if (itemId) { bb.splitterFilterB.push_back(ItemType{*itemId}); }
+                    }
+                }
+
                 const toml::array* modArr = (*bldTbl)["modules"].as_array();
                 if (modArr)
                 {

src/lib/core/Blueprint.h

@@ -8,6 +8,7 @@
 #include <QString>
 
 #include "BuildingType.h"
+#include "ItemType.h"
 #include "Rotation.h"
 #include "ShipLayout.h"
 
@@ -18,6 +19,11 @@ struct BlueprintBuilding
     QPoint       offset;     // tile offset from bounding-box center (floor for even sizes)
     std::string  recipeId;   // empty = none selected
     std::optional<ShipLayoutConfig> shipLayout;
+
+    // Splitter output filters captured at blueprint creation (REQ-UI-BLUEPRINT-STORAGE).
+    // Empty = accept all. Re-applied to the placed splitter site (REQ-UI-BLUEPRINT-PLACE).
+    std::vector<ItemType> splitterFilterA;
+    std::vector<ItemType> splitterFilterB;
 };
 
 struct Blueprint