增加参数保存功能，修复这个功能bug，现在可以用了

Cad/TemplateDrawingService.cs

@@ -264,11 +264,71 @@ namespace CadParamPluging.Cad
         {
             public int Score;
             public string Kind;
+            public ObjectId TargetId; // Added for persistence tracking
             public string PlainText;
             public string OriginalContents;
             public Action<string> Apply;
         }
 
+        /// <summary>
+        /// 在实体扩展字典中保存原始模板文本，以便下次重新生成时可以再次使用
+        /// </summary>
+        private static void SetNoteTemplateData(Transaction tr, ObjectId id, string template)
+        {
+            if (string.IsNullOrEmpty(template)) return;
+
+            var ent = tr.GetObject(id, OpenMode.ForWrite) as Entity;
+            if (ent == null) return;
+
+            if (ent.ExtensionDictionary.IsNull)
+            {
+                ent.CreateExtensionDictionary();
+            }
+
+            var dict = (DBDictionary)tr.GetObject(ent.ExtensionDictionary, OpenMode.ForWrite);
+            const string DictName = "CadParamPluging_NoteData";
+            
+            // XRecord
+            var rb = new ResultBuffer(new TypedValue((int)DxfCode.Text, template));
+            var xrec = new Xrecord { Data = rb };
+
+            if (dict.Contains(DictName))
+            {
+                var oldId = dict.GetAt(DictName);
+                var oldXrec = (Xrecord)tr.GetObject(oldId, OpenMode.ForWrite);
+                oldXrec.Data = rb;
+            }
+            else
+            {
+                dict.SetAt(DictName, xrec);
+                tr.AddNewlyCreatedDBObject(xrec, true);
+            }
+        }
+
+        private static string GetNoteTemplateData(Transaction tr, ObjectId id)
+        {
+            var ent = tr.GetObject(id, OpenMode.ForRead) as Entity;
+            if (ent == null || ent.ExtensionDictionary.IsNull) return null;
+
+            var dict = (DBDictionary)tr.GetObject(ent.ExtensionDictionary, OpenMode.ForRead);
+            const string DictName = "CadParamPluging_NoteData";
+
+            if (!dict.Contains(DictName)) return null;
+
+            var xrec = (Xrecord)tr.GetObject(dict.GetAt(DictName), OpenMode.ForRead);
+            var rb = xrec.Data;
+            if (rb == null) return null;
+
+            foreach (var tv in rb)
+            {
+                if (tv.TypeCode == (int)DxfCode.Text)
+                {
+                    return tv.Value as string;
+                }
+            }
+            return null;
+        }
+
         public static NoteApplyResult ApplyNoteTemplate(CadContext ctx, string layoutName, bool scanModelSpace, TemplateSchemaDefinition schema, ParamBag bag)
         {
             if (ctx == null)
@@ -291,8 +351,8 @@ namespace CadParamPluging.Cad
                 return new NoteApplyResult { Applied = false, Message = "未配置附注绑定，跳过。" };
             }
 
-            var tr = ctx.Transaction;
             var db = ctx.Database;
+            var tr = ctx.Transaction;
 
             var space = GetTargetSpace(tr, db, layoutName, scanModelSpace);
             if (space == null)
@@ -300,6 +360,29 @@ namespace CadParamPluging.Cad
                 return new NoteApplyResult { Applied = false, Message = "未找到目标空间，跳过附注替换。" };
             }
 
+            // 1. 优先查找已经标记过的 Note Entity (重生成场景)
+            foreach (ObjectId id in space)
+            {
+                var storedTemplate = GetNoteTemplateData(tr, id);
+                if (!string.IsNullOrEmpty(storedTemplate))
+                {
+                    // 找到了之前的附注，使用存储的模板重新渲染
+                    var effectiveStored = NoteTemplateEngine.BuildEffectiveValueKeyBindings(schema.NoteBindings);
+                    var renderedStored = NoteTemplateEngine.Render(storedTemplate, effectiveStored, bag.GetString);
+                    
+                    ApplyNoteTextToObject(tr, id, "ExistingTaggedNote", renderedStored, null);
+                    
+                    return new NoteApplyResult
+                    {
+                        Applied = true,
+                        TargetKind = "ExistingTaggedNote",
+                        PlaceholderCountInDwg = 0,
+                        RenderedText = renderedStored,
+                        Message = "已更新现有附注 (基于存储的模板)。"
+                    };
+                }
+            }
+
             var candidates = new List<NoteCandidate>();
             var visitedBlocks = new HashSet<ObjectId>();
             foreach (ObjectId id in space)
@@ -368,13 +451,16 @@ namespace CadParamPluging.Cad
                         space.AppendEntity(mt);
                         tr.AddNewlyCreatedDBObject(mt, true);
 
+                        // 关键：标记该实体，保存模板文本
+                        SetNoteTemplateData(tr, mt.ObjectId, schema.NoteTemplateText);
+
                         return new NoteApplyResult
                         {
                             Applied = true,
                             TargetKind = "CreatedMText",
                             PlaceholderCountInDwg = 0,
                             RenderedText = renderedForCreation,
-                            Message = "未找到附注定位，已自动创建 (左下角对齐)。"
+                            Message = "未找到附注定位，已自动创建并标记。"
                         };
                     }
                 }
@@ -405,13 +491,18 @@ namespace CadParamPluging.Cad
             var rendered = NoteTemplateEngine.Render(templateText, effective, bag.GetString);
             best.Apply(rendered);
 
+            if (!best.TargetId.IsNull)
+            {
+                SetNoteTemplateData(tr, best.TargetId, templateText);
+            }
+
             return new NoteApplyResult
             {
                 Applied = true,
                 TargetKind = best.Kind,
                 PlaceholderCountInDwg = placeholderCount,
                 RenderedText = rendered,
-                Message = "附注已替换。"
+                Message = "附注已替换并标记。"
             };
         }
 
@@ -533,6 +624,7 @@ namespace CadParamPluging.Cad
             {
                 Score = score,
                 Kind = kind,
+                TargetId = id,  // Store ID
                 PlainText = plainText,
                 OriginalContents = originalContents,
                 Apply = rendered => ApplyNoteTextToObject(tr, id, kind, rendered, originalContents)