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/Signal/WifiComponent.cs

@@ -1,6 +1,7 @@
 using Barotrauma.Networking;
 using Microsoft.Xna.Framework;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -10,7 +11,8 @@ namespace Barotrauma.Items.Components
 {
     partial class WifiComponent : ItemComponent, IServerSerializable, IClientSerializable
     {
-        private static readonly List<WifiComponent> list = new List<WifiComponent>();
+        private static readonly ConcurrentDictionary<WifiComponent, byte> _wifiDict = new ConcurrentDictionary<WifiComponent, byte>();
+        private static IEnumerable<WifiComponent> AllWifiComponents => _wifiDict.Keys;
 
         const int ChannelMemorySize = 10;
 
@@ -111,7 +113,7 @@ namespace Barotrauma.Items.Components
         public WifiComponent(Item item, ContentXElement element)
             : base (item, element)
         {
-            list.Add(this);
+            _wifiDict.TryAdd(this, 0);
             IsActive = true;
         }
 
@@ -156,7 +158,7 @@ namespace Barotrauma.Items.Components
         /// </summary>
         public IEnumerable<WifiComponent> GetReceiversInRange()
         {
-            return list.Where(w => w != this && w.CanReceive(this));
+            return AllWifiComponents.Where(w => w != this && w.CanReceive(this));
         }
 
         public bool CanReceive(WifiComponent sender)
@@ -185,7 +187,7 @@ namespace Barotrauma.Items.Components
         /// </summary>
         public IEnumerable<WifiComponent> GetTransmittersInRange()
         {
-            return list.Where(w => w != this && w.CanTransmit(this));
+            return AllWifiComponents.Where(w => w != this && w.CanTransmit(this));
         }
 
         public bool CanTransmit(WifiComponent sender)
@@ -275,7 +277,8 @@ namespace Barotrauma.Items.Components
 
                 if (signal.source != null)
                 {
-                    foreach (Connection receiver in wifiComp.item.LastSentSignalRecipients)
+                    // Use ToList() snapshot for thread-safe iteration
+                    foreach (Connection receiver in wifiComp.item.LastSentSignalRecipients.ToList())
                     {
                         if (!signal.source.LastSentSignalRecipients.Contains(receiver))
                         {
@@ -366,7 +369,7 @@ namespace Barotrauma.Items.Components
         protected override void RemoveComponentSpecific()
         {
             base.RemoveComponentSpecific();
-            list.Remove(this);
+            _wifiDict.TryRemove(this, out _);
         }
 
         public override XElement Save(XElement parentElement)