fix: queue readiness barrier after fixture activation

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/FirstLimitedApplyAutomation.cs

@@ -199,14 +199,14 @@ internal sealed class FirstLimitedApplyAutomationCoordinator
             // coordinator receives the returned Document. Confirm the current
             // active document after assignment so that one missed event cannot
             // strand the workflow waiting for another startup Idle.
-            var activeDocument = AcadApplication.DocumentManager.MdiActiveDocument;
-            if (activeDocument is not null && string.Equals(activeDocument.Name, document.Name, StringComparison.OrdinalIgnoreCase))
-            {
+            // Open was requested for this exact local fixture and it has just
+            // been made MDI-active. Queue a no-op public command regardless of
+            // wrapper identity/name normalisation; CommandEnded is the actual
+            // readiness proof before any Plant API is used.
             fixtureDocumentActivated = true;
             transitions.Add("FixtureDocumentActiveAfterOpen");
             QueueReadinessBarrier();
         }
-        }
         catch (System.Exception ex) { FailFromCallback("Start", ex, "AUTOMATION_START_FAILED"); }
     }
 

Plant3D2026/P_Rec_Annot/tests/PRecAnnot.Core.Tests/FoundationTests.cs

@@ -104,7 +104,7 @@ public sealed class FoundationTests
         var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "FirstLimitedApplyAutomation.cs"));
         var start = source[source.IndexOf("public void Start()", StringComparison.Ordinal)..source.IndexOf("private void CompleteLifecycleProbe", StringComparison.Ordinal)];
         Assert.Contains("FixtureDocumentActiveAfterOpen", start);
-        Assert.Contains("string.Equals(activeDocument.Name, document.Name", start);
+        Assert.Contains("fixtureDocumentActivated = true", start);
         Assert.Contains("QueueReadinessBarrier();", start);
         Assert.Contains("ReadinessBarrierCompleted", source);
         Assert.Contains("TryActivateProjectAndVerifyContext();", source);