add recharge

unit.h

@@ -106,7 +106,9 @@ public:
     QString getQueuedActionSummary() const;
 
     // Attack cooldown / flash
-    float attackFlashTimer;
+    float attackFlashTimer;       // Flash effect timer (visual feedback after attack or taking damage)
+    float rechargeTimer;          // Recharge/cooldown timer (time remaining until unit can attack again)
+    bool isRecharging() const;    // Returns true if unit is currently on cooldown
 
     // Building State
     float buildProgress; // 0.0 to 1.0
@@ -133,4 +135,4 @@ public:
     static float getTerrainHeight(float worldX, float worldY, Matrix2D<TerrainPoint> *mapPoints, int numPoints05);
 };
 
-#endif // UNIT_H
+#endif // UNIT_H