fix: exit lifecycle probe from verified idle

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

@@ -180,7 +180,10 @@ internal sealed class FirstLimitedApplyAutomationCoordinator
     {
         transitions.Add("LifecycleProbeCompleted");
         WriteEvidence(true, null);
-        RequestControlledExit();
+        // LifecycleProbe is already running from the first verified Idle callback.
+        // Do not wait for a second Idle: a startup-script host is permitted not to
+        // raise one, which otherwise leaves acad.exe responsive but stranded.
+        RequestControlledExit(idleSafe: true);
     }
 
     private void OnIdle(object? sender, EventArgs e) => RunCallback("Idle", BeginContextVerification);
@@ -285,18 +288,28 @@ internal sealed class FirstLimitedApplyAutomationCoordinator
     // AutoCAD's direct Application.Quit can leave a startup-script host alive.
     // Dispatching the native QUIT command from the next quiescent Idle cycle
     // preserves normal command shutdown semantics.
-    private void RequestControlledExit()
+    private void RequestControlledExit(bool idleSafe = false)
     {
         if (exitQueued) return;
         exitQueued = true;
         Transition(CoordinatorState.ExitQueued, "ExitQueued");
+        if (idleSafe)
+        {
+            DispatchNativeQuit();
+            return;
+        }
         AcadApplication.Idle += OnExitIdle;
         exitHandlerSubscribed = true;
     }
 
     private void OnExitIdle(object? sender, EventArgs args)
     {
-        RunCallback("ControlledExitIdle", () =>
+        RunCallback("ControlledExitIdle", DispatchNativeQuit);
+    }
+
+    private void DispatchNativeQuit()
+    {
+        try
         {
             if (exitHandlerSubscribed) AcadApplication.Idle -= OnExitIdle;
             exitHandlerSubscribed = false;
@@ -306,7 +319,13 @@ internal sealed class FirstLimitedApplyAutomationCoordinator
             if (active is null) { AcadApplication.Quit(); return; }
             transitions.Add("NativeQuitDispatched");
             active.SendStringToExecute("_.QUIT _N ", true, false, false);
-        });
+        }
+        catch (System.Exception exception)
+        {
+            // This is terminal cleanup: contain the exception and leave process
+            // cleanup to Launcher rather than re-entering document APIs.
+            FailFromCallback("ControlledExitIdle", exception, "AUTOMATION_CONTROLLED_EXIT_FAILED");
+        }
     }
 
     private bool IsTerminal => state is CoordinatorState.Completed or CoordinatorState.Failed or CoordinatorState.ExitQueued;