(try to) fix existing double spawns

SCHIZO/Items/Components/DestroyOnStoryGoal.cs

@@ -0,0 +1,34 @@
+using SCHIZO.Helpers;
+using Story;
+
+namespace SCHIZO.Items.Components;
+partial class DestroyOnStoryGoal : IStoryGoalListener
+{
+    private string storyGoal;
+    public void Start()
+    {
+        storyGoal = RetargetHelpers.Pick(storyGoalSN, storyGoalBZ);
+        StoryGoalManager.main.AddListener(this);
+        UpdateActive();
+    }
+
+    private void OnDestroy()
+    {
+        StoryGoalManager.main.RemoveListener(this);
+    }
+
+    public void NotifyGoalComplete(string key) => UpdateActive(key);
+
+    public void NotifyGoalReset(string key) => UpdateActive(key);
+
+    public void NotifyGoalsDeserialized() => UpdateActive();
+
+    private void UpdateActive(string key = null)
+    {
+        if (key is { } && !StoryGoalHelpers.Matches(key, storyGoal))
+            return;
+
+        if (StoryGoalHelpers.IsCompleted(storyGoal))
+            Destroy(GetComponentInParent<PrefabIdentifier>().gameObject);
+    }
+}

SCHIZO/Creatures/Components/DisableUntilStoryGoal.cs → SCHIZO/Items/Components/DisableUntilStoryGoal.cs

@@ -1,7 +1,7 @@
 using SCHIZO.Helpers;
 using Story;
 
-namespace SCHIZO.Creatures.Components;
+namespace SCHIZO.Items.Components;
 partial class DisableUntilStoryGoal : IStoryGoalListener
 {
     private string storyGoal;

SCHIZO/Items/PDAJournal.cs

@@ -3,6 +3,7 @@
 using Nautilus.Assets.Gadgets;
 using Nautilus.Assets.PrefabTemplates;
 using SCHIZO.Helpers;
+using SCHIZO.Items.Components;
 
 namespace SCHIZO.Items;
 
@@ -52,6 +53,12 @@ private PDAJournalPrefab(PDAJournal journal)
                     if (!string.IsNullOrEmpty(journal.pdaHandTargetSubtext))
                         handTarget.secondaryTooltip = journal.pdaHandTargetSubtext;
                     handTarget.goal.key = journal.key;
+
+                    DestroyOnStoryGoal preventDupes = prefab.EnsureComponent<DestroyOnStoryGoal>();
+                    preventDupes.storyGoalSN = preventDupes.storyGoalBZ = journal.key;
+
+                    DestroyInCreativeMode storyOnly = prefab.EnsureComponent<DestroyInCreativeMode>();
+
                     prefab.SetActive(false);
                 }
             });

Unity/Assets/Scripts/SCHIZO/Items/Components/DestroyOnStoryGoal.cs

@@ -0,0 +1,13 @@
+using TriInspector;
+using UnityEngine;
+
+namespace SCHIZO.Items.Components
+{
+    public sealed partial class DestroyOnStoryGoal : MonoBehaviour
+    {
+        [LabelText("Story Goal (SN)")]
+        public string storyGoalSN;
+        [LabelText("Story Goal (BZ)")]
+        public string storyGoalBZ;
+    }
+}

Unity/Assets/Scripts/SCHIZO/Creatures/Components/DisableUntilStoryGoal.cs → Unity/Assets/Scripts/SCHIZO/Items/Components/DisableUntilStoryGoal.cs

@@ -1,7 +1,7 @@
 using TriInspector;
 using UnityEngine;
 
-namespace SCHIZO.Creatures.Components
+namespace SCHIZO.Items.Components
 {
     public sealed partial class DisableUntilStoryGoal : MonoBehaviour
     {
@@ -10,4 +10,4 @@ public sealed partial class DisableUntilStoryGoal : MonoBehaviour
         [LabelText("Story Goal (BZ)")]
         public string storyGoalBZ;
     }
-}
+}

Unity/Assets/Scripts/Subnautica/DestroyDuplicates.cs

@@ -0,0 +1,9 @@
+using SCHIZO.TriInspector.Attributes;
+using TriInspector;
+using UnityEngine;
+
+[DeclareComponentReferencesGroup]
+public class DestroyDuplicates : MonoBehaviour
+{
+    [ComponentReferencesGroup, Required] public PrefabIdentifier identifier;
+}