Merge branch 'fix/archreview-crit2-vt-timeout'

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/VirtualTags/VirtualTagHostActor.cs

@@ -85,6 +85,12 @@ public sealed class VirtualTagHostActor : ReceiveActor
 
     private void OnApply(ApplyVirtualTags msg)
     {
+        // Apply-boundary compile-cache drop: each deploy generation may carry edited script sources, and
+        // the production evaluator roots one collectible AssemblyLoadContext per compiled expression. Drop
+        // them here (mirroring ScriptedAlarmEngine's per-generation clear) so stale ALCs are reclaimed
+        // instead of accreting across edits. No-op for evaluators without a cache (NullVirtualTagEvaluator).
+        (_evaluator as IScriptCacheOwner)?.ClearCompiledScripts();
+
         var desired = new HashSet<string>(msg.Plans.Select(p => p.VirtualTagId), StringComparer.Ordinal);
 
         // Stop + forget children whose vtagId is no longer desired. Stopping the child triggers its