Assignment system overhaul to fix many bugs

Assets/Scripts/IADS/ThreatData.cs

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+using System.Collections.Generic;
+using UnityEngine;
+
+[System.Serializable]
+public enum ThreatStatus {
+    UNASSIGNED,
+    ASSIGNED,
+    DESTROYED
+}
+[System.Serializable]
+public class ThreatData
+{
+    public Threat Threat;
+    [SerializeField]
+    private ThreatStatus _status;
+    public ThreatStatus Status { get { return _status; } }
+    public string ThreatID;
+    [SerializeField]
+    private List<Interceptor> _assignedInterceptors; // Changed from property to field
+
+    public void AssignInterceptor(Interceptor interceptor) {
+        if(Status == ThreatStatus.DESTROYED) {
+            Debug.LogError($"AssignInterceptor: Threat {ThreatID} is destroyed, cannot assign interceptor");
+            return;
+        }
+        _status = ThreatStatus.ASSIGNED;
+        _assignedInterceptors.Add(interceptor);
+    }
+
+    public void RemoveInterceptor(Interceptor interceptor) {
+        _assignedInterceptors.Remove(interceptor);
+        if(_assignedInterceptors.Count == 0) {
+            _status = ThreatStatus.UNASSIGNED;
+        }
+    }
+
+    public void MarkDestroyed() {
+        _status = ThreatStatus.DESTROYED;
+    }
+    // Constructor remains the same
+    public ThreatData(Threat threat, string threatID)
+    {
+        Threat = threat;
+        _status = ThreatStatus.UNASSIGNED;
+        ThreatID = threatID;
+        _assignedInterceptors = new List<Interceptor>(); // Initialize the list
+    }
+}

Assets/Scripts/IADS/ThreatData.cs.meta

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+fileFormatVersion: 2
+guid: adc0c5dbdb9dc7d498b50cf9a15c2db5