make ships claim targets

src/lib/ecs/system/ai/AttackEvaluator.h

@@ -1,11 +1,22 @@
 #pragma once
 
 class EntityAdmin;
+struct WorldTargeting;
 
 // Acquires/validates a combat target for ships with weapons. Scores high only
 // when the ship's health is not low and a valid target is within sensor range.
+//
+// Target choice is claim-aware: each tick the desirability of every candidate is
+// scored from a configurable distance formula and reduced by a soft overclaim
+// penalty that scales with how many other ships already target it, spreading
+// ships across enemies instead of dogpiling the nearest one.
 class AttackEvaluator
 {
 public:
+    explicit AttackEvaluator(const WorldTargeting& targeting);
+
     void evaluate(EntityAdmin& admin);
+
+private:
+    const WorldTargeting* m_targeting;
 };