perf(slashblade-allweapon): 加速弹体命中去重

原因 / Cause:
四类弹体每次实体扫描后都以 ArrayList.removeAll 进行已命中排除，候选与历史命中数增长时成员检查退化为线性。

修复 / Fix:
将仅作成员记录的 alreadyHitEntity 从 ArrayList 替换为 HashSet，保留原有 add、clear、addAll 与 removeAll 调用顺序。

性能收益 / Performance:
实体扫描结果排除已命中目标时，成员检查由线性查找降为均摊常数时间，降低多弹体和多目标场景的去重开销。

兼容性 / Compatibility:
不改变 AABB、selector、攻击顺序、命中冷却或弹体生命周期；集合未被迭代，命中列表的顺序和重复值不参与行为。

验证 / Validation:
Java 25 下执行 Gradle 9.4.0 build --no-daemon --console=plain 成功（test 为 NO-SOURCE）。

Refs #1

src/main/java/com/moe/allweapon/Entityadd/EntityDriveAdd.java

@@ -30,10 +30,11 @@ package com.moe.allweapon.Entityadd;
 import cpw.mods.fml.common.registry.IThrowableEntity;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
-import java.util.ArrayList;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Random;
+import java.util.Set;
 import mods.flammpfeil.slashblade.ItemSlashBlade;
 import mods.flammpfeil.slashblade.ability.StylishRankManager;
 import net.minecraft.block.Block;
@@ -58,7 +59,7 @@ extends Entity
 implements IThrowableEntity {
     protected Entity thrower;
     protected ItemStack blade = null;
-    protected List<Entity> alreadyHitEntity = new ArrayList<Entity>();
+    protected Set<Entity> alreadyHitEntity = new HashSet<Entity>();
     protected float AttackLevel = 0.0f;
     private int i;
     private Long startTime = new Date().getTime();

src/main/java/com/moe/allweapon/Entityadd/EntitySlashDimensionAdd.java

@@ -30,9 +30,10 @@ package com.moe.allweapon.Entityadd;
 import cpw.mods.fml.common.registry.IThrowableEntity;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
-import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Random;
+import java.util.Set;
 import mods.flammpfeil.slashblade.ItemSlashBlade;
 import mods.flammpfeil.slashblade.ability.StylishRankManager;
 import mods.flammpfeil.slashblade.ability.TeleportCanceller;
@@ -57,7 +58,7 @@ extends Entity
 implements IThrowableEntity {
     protected Entity thrower;
     protected ItemStack blade = null;
-    protected List<Entity> alreadyHitEntity = new ArrayList<Entity>();
+    protected Set<Entity> alreadyHitEntity = new HashSet<Entity>();
     protected float AttackLevel = 0.0f;
     private static final int LIFETIME = 3;
     private static final int SINGLE_HIT = 4;

src/main/java/com/moe/allweapon/Entityadd/EntitySummonedButterfly.java

@@ -34,11 +34,12 @@ import com.moe.allweapon.Entityadd.EntitySummonedSwordAdd;
 import cpw.mods.fml.common.registry.IThrowableEntity;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
-import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+import java.util.Set;
 import java.util.WeakHashMap;
 import mods.flammpfeil.slashblade.ItemSlashBlade;
 import mods.flammpfeil.slashblade.ability.StylishRankManager;
@@ -70,7 +71,7 @@ IThrowableEntity {
     private static final Map<Entity, Long> playerHitCooldown = Collections.synchronizedMap(new WeakHashMap<Entity, Long>());
     protected Entity thrower;
     protected ItemStack blade = null;
-    protected List<Entity> alreadyHitEntity = new ArrayList<Entity>();
+    protected Set<Entity> alreadyHitEntity = new HashSet<Entity>();
     protected float AttackLevel = 0.0f;
     static final int THROWER_ENTITY_ID = 11;
     float speed = 0.0f;

src/main/java/com/moe/allweapon/Entityadd/EntitySummonedSwordAdd.java

@@ -33,11 +33,12 @@ package com.moe.allweapon.Entityadd;
 import cpw.mods.fml.common.registry.IThrowableEntity;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
-import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+import java.util.Set;
 import java.util.WeakHashMap;
 import mods.flammpfeil.slashblade.ItemSlashBlade;
 import mods.flammpfeil.slashblade.ability.StylishRankManager;
@@ -69,7 +70,7 @@ IThrowableEntity {
     private static final Map<Entity, Long> playerHitCooldown = Collections.synchronizedMap(new WeakHashMap<Entity, Long>());
     protected Entity thrower;
     protected ItemStack blade = null;
-    protected List<Entity> alreadyHitEntity = new ArrayList<Entity>();
+    protected Set<Entity> alreadyHitEntity = new HashSet<Entity>();
     protected float AttackLevel = 0.0f;
     static final int THROWER_ENTITY_ID = 11;
     float speed = 0.0f;