fix: RFID duplicate validation and correct magnet direction calculation

- Add real-time RFID duplicate validation in map editor with automatic rollback
- Remove RFID auto-assignment to maintain data consistency between editor and simulator
- Fix magnet direction calculation to use actual forward direction angles instead of arbitrary assignment
- Add node names to simulator combo boxes for better identification
- Improve UI layout by drawing connection lines before text for better visibility

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Cs_HMI/AGVSimulator/Models/SimulatorConfig.cs

@@ -26,6 +26,11 @@ namespace AGVSimulator.Models
         /// </summary>
         public bool AutoSave { get; set; } = true;
 
+        /// <summary>
+        /// 프로그램 시작시 마지막 맵 파일을 자동으로 로드할지 여부
+        /// </summary>
+        public bool AutoLoadLastMapFile { get; set; } = true;
+
         #endregion
 
         #region Static Methods
@@ -105,10 +110,19 @@ namespace AGVSimulator.Models
         /// <returns>유효한 경로인지 여부</returns>
         public bool IsMapEditorPathValid()
         {
-            return !string.IsNullOrEmpty(MapEditorExecutablePath) && 
+            return !string.IsNullOrEmpty(MapEditorExecutablePath) &&
                    File.Exists(MapEditorExecutablePath);
         }
 
+        /// <summary>
+        /// 마지막 맵 파일이 존재하는지 확인
+        /// </summary>
+        /// <returns>마지막 맵 파일이 유효한지 여부</returns>
+        public bool HasValidLastMapFile()
+        {
+            return !string.IsNullOrEmpty(LastMapFilePath) && File.Exists(LastMapFilePath);
+        }
+
         #endregion
     }
 }