WIP Make collections thread-safe and add safe iteration

Replaced static lists and dictionaries with thread-safe ConcurrentDictionary or ThreadLocal collections for various item components and systems. Updated all relevant code to use snapshots (ToArray, ToList) for safe iteration, and added helper methods for marking and clearing changed connections. These changes improve thread safety and prevent potential concurrency issues in multi-threaded scenarios.

Barotrauma/BarotraumaShared/SharedSource/Items/Components/ElectricalDischarger.cs

@@ -3,6 +3,7 @@ using Barotrauma.Networking;
 using FarseerPhysics;
 using Microsoft.Xna.Framework;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -10,11 +11,8 @@ namespace Barotrauma.Items.Components
 {
     partial class ElectricalDischarger : Powered, IServerSerializable
     {
-        private static readonly List<ElectricalDischarger> list = new List<ElectricalDischarger>();
-        public static IEnumerable<ElectricalDischarger> List
-        {
-            get { return list; }
-        }
+        private static readonly ConcurrentDictionary<ElectricalDischarger, byte> _dischargerDict = new ConcurrentDictionary<ElectricalDischarger, byte>();
+        public static IEnumerable<ElectricalDischarger> List => _dischargerDict.Keys;
 
         const int MaxNodes = 100;
         const float MaxNodeDistance = 150.0f;
@@ -115,7 +113,7 @@ namespace Barotrauma.Items.Components
         public ElectricalDischarger(Item item, ContentXElement element) : 
             base(item, element)
         {
-            list.Add(this);
+            _dischargerDict.TryAdd(this, 0);
 
             foreach (var subElement in element.Elements())
             {
@@ -604,7 +602,7 @@ namespace Barotrauma.Items.Components
         protected override void RemoveComponentSpecific()
         {
             base.RemoveComponentSpecific();
-            list.Remove(this);
+            _dischargerDict.TryRemove(this, out _);
         }
 
         public void ServerEventWrite(IWriteMessage msg, Client c, NetEntityEvent.IData extraData = null)