implement ship modules

src/lib/config/ModulesConfig.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "Formula.h"
+#include "RecipesConfig.h"
+
+// A single stat modifier contributed by a module instance.
+// REQ-MOD-STAT-CALC: final = base * (1 + sum(m_i - 1)) + sum(additives).
+struct ModuleStatModifier
+{
+    std::string stat;         // e.g. "hp", "speed", "sensor_range"
+    std::string modifierType; // "additive" or "multiplicative"
+    Formula formula;
+};
+
+struct ModuleDef
+{
+    std::string id;
+    std::vector<std::string> surfaceMask;
+    std::vector<RecipeIngredient> materials;
+    int playerProductionLevel;
+    double productionTimeSeconds;
+    double threatCost;
+    std::string fillColor;
+    std::string glyph;
+    std::vector<ModuleStatModifier> statModifiers;
+};
+
+struct ModulesConfig
+{
+    std::vector<ModuleDef> modules;
+};