feat: add manual annotation edit and reopen workflow

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/EntryPoint.cs

@@ -57,7 +57,7 @@ public sealed class EntryPoint : IExtensionApplication
     [CommandMethod("PXP-IOD", CommandFlags.Session)] public void UpdateOrthoDrawingsCommand() => PRecAnnot.Plant3D2026.UpdateOrthoDrawingsCommand.Run();
     [CommandMethod("mto-ma")] public void ShowManualAnnotationPaletteCommand() => ManualAnnotationPalette.Show();
     [CommandMethod("PXP-MA")] public void ShowManualAnnotationPaletteAliasCommand() => ManualAnnotationPalette.Show();
-    [CommandMethod("CAC1")] public void PlaceManualAnnotationCommand() => ManualAnnotationPalette.PlaceSelected();
+    [CommandMethod("CAC1")] public void PlaceManualAnnotationCommand() => ManualAnnotationEditCommand.Run();
     [CommandMethod("PXP-MAB")] public void InsertManualBlockCommand() => ManualBlockInsertionCommand.Run(ManualAnnotationPalette.CurrentState());
 
     [CommandMethod("PHP_REC_AUTOMATION_START", CommandFlags.Session)]

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/ManualAnnotationEditCommand.cs

@@ -0,0 +1,56 @@
+using Autodesk.AutoCAD.DatabaseServices;
+using Autodesk.AutoCAD.EditorInput;
+using Autodesk.AutoCAD.ApplicationServices;
+using PRecAnnot.Core;
+using AcadApplication = Autodesk.AutoCAD.ApplicationServices.Application;
+
+namespace PRecAnnot.Plant3D2026;
+
+internal static class ManualAnnotationEditCommand
+{
+    private const string AppName = "P_REC_ANNOT_MANUAL";
+
+    public static void Run()
+    {
+        var document = AcadApplication.DocumentManager.MdiActiveDocument;
+        if (document is null) return;
+        var options = new PromptEntityOptions("\nSelect owned manual annotation to edit: ");
+        options.SetRejectMessage("\nSelect a block reference.");
+        options.AddAllowedClass(typeof(BlockReference), true);
+        var selection = document.Editor.GetEntity(options);
+        if (selection.Status != PromptStatus.OK) return;
+
+        using var documentLock = document.LockDocument();
+        using var transaction = document.Database.TransactionManager.StartTransaction();
+        var reference = transaction.GetObject(selection.ObjectId, OpenMode.ForWrite) as BlockReference;
+        if (reference is null) return;
+        var state = ReadState(reference);
+        if (state is null)
+        {
+            document.Editor.WriteMessage("\nManual annotation state is missing or invalid; no migration was performed.");
+            return;
+        }
+
+        document.Editor.WriteMessage($"\nRestored {state.Kind}; datum={state.DatumMode}; offset={state.DatumOffset:0.###}.");
+        foreach (ObjectId attributeId in reference.AttributeCollection)
+        {
+            var attribute = transaction.GetObject(attributeId, OpenMode.ForWrite) as AttributeReference;
+            if (attribute is null) continue;
+            var prompt = new PromptStringOptions($"\n{attribute.Tag} <{attribute.TextString}>: ") { AllowSpaces = true, UseDefaultValue = true, DefaultValue = attribute.TextString };
+            var value = document.Editor.GetString(prompt);
+            if (value.Status == PromptStatus.OK) attribute.TextString = value.StringResult;
+            else if (value.Status is PromptStatus.Cancel or PromptStatus.Error) return;
+        }
+        reference.XData = new ResultBuffer(new TypedValue((int)DxfCode.ExtendedDataRegAppName, AppName), new TypedValue((int)DxfCode.ExtendedDataAsciiString, state.Serialize()));
+        transaction.Commit();
+        document.Editor.WriteMessage("\nManual annotation updated; native AutoCAD UNDO is available.");
+        RuntimeDiagnostics.Write("ManualAnnotationEditCompleted", commandName: "CAC1", resultStatus: "Updated", document: document);
+    }
+
+    private static ManualAnnotationState? ReadState(BlockReference reference)
+    {
+        using var data = reference.GetXDataForApplication(AppName);
+        var serialized = data?.AsArray().FirstOrDefault(value => value.TypeCode == (int)DxfCode.ExtendedDataAsciiString).Value as string;
+        return ManualAnnotationState.Deserialize(serialized);
+    }
+}