ninja 2 electric boogaloo (#15534)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/Research/Systems/SharedResearchSystem.cs

@@ -169,6 +169,18 @@ public abstract class SharedResearchSystem : EntitySystem
         if (prototype.Tier < discipline.LockoutTier)
             return;
         component.MainDiscipline = prototype.Discipline;
-        Dirty(component);
+        Dirty(uid, component);
+    }
+
+    /// <summary>
+    /// Clear all unlocked technologies from the database.
+    /// </summary>
+    public void ClearTechs(EntityUid uid, TechnologyDatabaseComponent? comp = null)
+    {
+        if (!Resolve(uid, ref comp) || comp.UnlockedTechnologies.Count == 0)
+            return;
+
+        comp.UnlockedTechnologies.Clear();
+        Dirty(uid, comp);
     }
 }