add basic types and fix cmake

src/lib/config/RecipesConfig.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <optional>
+#include <string>
+#include <vector>
+
+#include "BuildingType.h"
+
+// One entry in [[recipe]].inputs — amount units of a named item consumed per
+// production cycle (REQ-MAT-CYCLE).
+struct RecipeIngredient
+{
+    std::string item;
+    int amount;
+};
+
+// One entry in [[recipe]].outputs. For reprocessing_plant recipes, probability
+// is populated and outputs are rolled with weighted pick at cycle start
+// (REQ-BLD-REPROCESSING, REQ-MAT-CYCLE). For other buildings, probability is
+// std::nullopt and all outputs are produced on every cycle.
+struct RecipeOutput
+{
+    std::string item;
+    int amount;
+    std::optional<double> probability;
+};
+
+struct RecipeDef
+{
+    std::string id;                // Unique recipe id; used by UI for selection.
+    BuildingType building;         // Which BuildingType can run this recipe.
+    std::vector<RecipeIngredient> inputs;
+    std::vector<RecipeOutput> outputs;
+    double durationSeconds;
+};
+
+struct RecipesConfig
+{
+    std::vector<RecipeDef> recipes;
+};