derive threat cost dynamically

src/lib/config/ConfigLoader.cpp

@@ -429,14 +429,6 @@ ShipsConfig ConfigLoader::loadShips(const std::string& path)
                 bpMt["production_time_seconds"], file, bpPath + ".production_time_seconds");
         }
 
-        // Threat
-        {
-            const std::string tPath = elemPath + ".threat";
-            const toml::table& tTable = requireTable(mt["threat"], file, tPath);
-            toml::table& tMt = const_cast<toml::table&>(tTable);
-            def.threat.costFormula = requireFormula(tMt["cost_formula"], file, tPath + ".cost_formula");
-        }
-
         // Health
         {
             const std::string hPath = elemPath + ".health";
@@ -587,7 +579,6 @@ ModulesConfig ConfigLoader::loadModules(const std::string& path)
             mt["player_production_level"], file, elemPath + ".player_production_level"));
         def.productionTimeSeconds = requireDouble(
             mt["production_time_seconds"], file, elemPath + ".production_time_seconds");
-        def.threatCost            = requireDouble(mt["threat_cost"], file, elemPath + ".threat_cost");
         def.fillColor             = requireString(mt["fill_color"], file, elemPath + ".fill_color");
         def.glyph                 = requireString(mt["glyph"], file, elemPath + ".glyph");
 
@@ -704,5 +695,6 @@ GameConfig ConfigLoader::loadFromDirectory(const std::string& configDir)
     cfg.ships     = loadShips(configDir + "/ships.toml");
     cfg.stations  = loadStations(configDir + "/stations.toml");
     cfg.modules   = loadModules(configDir + "/modules.toml");
+    cfg.threatCosts = computeThreatCostTable(cfg);
     return cfg;
 }

src/lib/config/GameConfig.h

@@ -6,6 +6,7 @@
 #include "ShipsConfig.h"
 #include "StationsConfig.h"
 #include "ModulesConfig.h"
+#include "ThreatCostCalculator.h"
 
 // Aggregate of all simulation config files. Loaded at startup and reloaded
 // from disk on each game restart (REQ-CFG-RELOAD). See architecture.md "Config Loading".
@@ -17,4 +18,5 @@ struct GameConfig
     ShipsConfig ships;
     StationsConfig stations;
     ModulesConfig modules;
+    ThreatCostTable threatCosts;
 };

src/lib/config/ModulesConfig.h

@@ -45,7 +45,6 @@ struct ModuleDef
     std::vector<RecipeIngredient> materials;
     int playerProductionLevel;
     double productionTimeSeconds;
-    double threatCost;
     std::string fillColor;
     std::string glyph;
     std::vector<ModuleStatModifier> statModifiers;

src/lib/config/ShipsConfig.h

@@ -16,13 +16,6 @@ struct ShipSchematic
     double productionTimeSeconds;
 };
 
-// Wave scheduling cost (REQ-WAV-THREAT-COST). Ships with cost_formula that
-// always evaluates to 0 are ineligible as wave picks.
-struct ShipThreat
-{
-    Formula costFormula;
-};
-
 struct ShipHealth
 {
     Formula hpFormula;  // REQ-SHP-STATS
@@ -55,7 +48,6 @@ struct ShipDef
     std::vector<std::string> layout;
 
     ShipSchematic schematic;
-    ShipThreat threat;
     ShipHealth health;
     ShipMovement movement;
     ShipSensor sensor;