fix(gestalt): 修复节点控制组重连、Overlord判定与过载刷新链路

- 修复控制组缩减时遍历并修改集合导致的潜在异常
- 修复读档重连覆盖已保存控制组分配的问题（仅补齐未分配节点）
- 控制组数量变化后立即刷新带宽与过载状态
- 修正 GetOverlord 仅返回 OverlordNode，避免 reflexive 关系方向歧义
- 接入 CompGestalt.CompTick -> GestaltTracker.GameComponentTick 周期更新
- 修复 HediffComp_GestaltNode 兜底 tracker 未绑定 Pawn 的潜在空引用

Source/ArachnaeSwarm/Hediffs/ARA_GestaltNode/CompGestalt.cs

@@ -46,6 +46,8 @@ namespace ArachnaeSwarm
         {
             Pawn pawn = parent as Pawn;
             if (pawn == null) return;
+            Pawn_GestaltTracker tracker = GestaltTracker;
+            if (tracker == null) return;
             
             // 查找所有有 GestaltOverseer 关系的 pawn
             List<DirectPawnRelation> relations = pawn.relations.DirectRelations;
@@ -56,7 +58,10 @@ namespace ArachnaeSwarm
                     Pawn hiveNode = relation.otherPawn;
                     if (hiveNode != null && hiveNode.IsGestaltNode(GestaltNodeType.HiveNode))
                     {
-                        GestaltTracker?.AssignPawnToControlGroup(hiveNode);
+                        if (tracker.GetControlGroup(hiveNode) == null)
+                        {
+                            tracker.AssignPawnToControlGroup(hiveNode);
+                        }
                     }
                 }
             }
@@ -76,6 +81,17 @@ namespace ArachnaeSwarm
                 yield return gizmo;
             }
         }
+
+        public override void CompTick()
+        {
+            base.CompTick();
+
+            Pawn pawn = parent as Pawn;
+            if (pawn == null || !pawn.IsGestaltNode(GestaltNodeType.OverlordNode))
+                return;
+
+            GestaltTracker?.GameComponentTick();
+        }
         
         public override void PostExposeData()
         {

Source/ArachnaeSwarm/Hediffs/ARA_GestaltNode/GestaltUtility.cs

@@ -9,12 +9,19 @@ namespace ArachnaeSwarm
     {
         public static Pawn GetOverlord(this Pawn pawn)
         {
+            if (pawn?.relations == null)
+                return null;
+
             List<DirectPawnRelation> relations = pawn.relations.DirectRelations;
             for (int i = 0; i < relations.Count; i++)
             {
                 if (relations[i].def == ARA_PawnRelationDefOf.ARA_GestaltOverseer)
                 {
-                    return relations[i].otherPawn;
+                    Pawn otherPawn = relations[i].otherPawn;
+                    if (otherPawn != null && otherPawn.IsGestaltNode(GestaltNodeType.OverlordNode))
+                    {
+                        return otherPawn;
+                    }
                 }
             }
             return null;
@@ -45,4 +52,4 @@ namespace ArachnaeSwarm
             }
         }
     }
-}
+}

Source/ArachnaeSwarm/Hediffs/ARA_GestaltNode/HediffComp_GestaltNode.cs

@@ -43,7 +43,7 @@ namespace ArachnaeSwarm
                 
                 if (tracker == null && NodeType == GestaltNodeType.OverlordNode)
                 {
-                    tracker = new Pawn_GestaltTracker();
+                    tracker = new Pawn_GestaltTracker(Pawn);
                 }
                 return tracker;
             }

Source/ArachnaeSwarm/Hediffs/ARA_GestaltNode/Pawn_GestaltTracker.cs

@@ -141,7 +141,8 @@ namespace ArachnaeSwarm
                     if (!groupToRemove.AssignedPawns.NullOrEmpty())
                     {
                         // 将pawn重新分配到其他组
-                        foreach (Pawn pawn in groupToRemove.AssignedPawns)
+                        List<Pawn> pawnsToReassign = groupToRemove.AssignedPawns.ToList();
+                        foreach (Pawn pawn in pawnsToReassign)
                         {
                             if (controlGroups.Count > 1)
                             {
@@ -153,6 +154,8 @@ namespace ArachnaeSwarm
                     controlGroups.RemoveAt(controlGroups.Count - 1);
                 }
             }
+
+            Notify_BandwidthChanged();
         }
 
         public void Notify_BandwidthChanged()