refactor: 插件 UI 从 WinForms 迁移到 CycleGUI，并修复代码质量问题

将 StandardScene 各插件的配置/监控窗体从 WinForms 迁移到 CycleGUI（删除 .Designer.cs/.resx，重写为 PanelBuilder 立即模式 UI，新增 CycleUiHelper 统一对话框）。

同时修复代码审核中的问题：
- 后台文件写入加锁 + try/catch（ButtonBoxManager / DoorManager，对齐 LoopViewer.SaveTasks 模式）
- CoderFieldsMetadata.cs 启用 #nullable enable，消除 CS8632 警告
- DummyCar 移除已废弃的 rightClickAction()/SetPosition()
- CarRemoteHelper.OpenVehicleWebPage 的 Process.Start 加 try/catch
- 重命名名不副实的 Mstsc()（现为打开网页）
- 统一弃元命名为 _
- TrafficInterlockViewer 改用稳定 Id（GUID）做选择/编辑，替代行索引
- csproj 改用 $(CGUILibDir) 解析 CycleGUI，绝对路径收敛到 Directory.Build.props

构建：dotnet build StandardScene.sln → 0 错误，30 警告（均为历史遗留）。
注：static 单例状态重构（审核第 8 项）暂未处理，留待单独任务。

StandardScene.Core/Charge/ChargeStationHelper.cs

@@ -1,9 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Windows.Forms;
+using CycleGUI;
 using SimpleCore;
 using SimpleCore.Library;
+using StandardScene.Utils;
 
 namespace StandardScene.Charge
 {
@@ -13,36 +14,11 @@ namespace StandardScene.Charge
     /// </summary>
     public static class ChargeStationHelper
     {
-        private static ChargeStationManagementForm _managementForm;
+        /// <summary>打开充电桩管理面板（单实例）。</summary>
+        public static void OpenManagementWindow() => ChargeStationManagementForm.Open();
 
-        /// <summary>
-        /// 打开充电桩管理窗口（单例模式）
-        /// </summary>
-        public static void OpenManagementWindow()
-        {
-            if (_managementForm == null || _managementForm.IsDisposed)
-            {
-                _managementForm = new ChargeStationManagementForm();
-                _managementForm.FormClosed += (s, e) => _managementForm = null;
-                _managementForm.Show();
-            }
-            else
-            {
-                _managementForm.BringToFront();
-                _managementForm.Activate();
-            }
-        }
-
-        /// <summary>
-        /// 打开充电桩管理窗口（对话框模式）
-        /// </summary>
-        public static DialogResult OpenManagementDialog()
-        {
-            using (var form = new ChargeStationManagementForm())
-            {
-                return form.ShowDialog();
-            }
-        }
+        /// <summary>打开充电桩管理面板（兼容旧 API）。</summary>
+        public static void OpenManagementDialog() => ChargeStationManagementForm.Open();
 
         /// <summary>
         /// 获取指定站点的充电桩
@@ -297,65 +273,44 @@ namespace StandardScene.Charge
             return success;
         }
 
-        /// <summary>
-        /// 显示充电桩选择对话框
-        /// </summary>
-        /// <param name="filterByStatus">按状态过滤（null表示显示全部）</param>
-        /// <returns>选中的充电桩，取消则返回null</returns>
-        public static ChargeStation ShowStationSelectionDialog(ChargeStationStatus? filterByStatus = null)
+        /// <summary>显示充电桩选择面板（非阻塞；通过 <paramref name="onSelected"/> 回调返回结果）。</summary>
+        public static void ShowStationSelectionDialog(ChargeStationStatus? filterByStatus, System.Action<ChargeStation> onSelected)
         {
-            var dataService = ChargeStationDataService.Instance;
-            var stations = dataService.GetAllStations();
-
+            var stations = ChargeStationDataService.Instance.GetAllStations();
             if (filterByStatus.HasValue)
-            {
                 stations = stations.Where(s => s.Status == filterByStatus.Value).ToList();
-            }
 
             if (stations.Count == 0)
             {
-                MessageBox.Show("没有符合条件的充电桩", "提示", 
-                    MessageBoxButtons.OK, MessageBoxIcon.Information);
-                return null;
+                CycleUiHelper.Alert("提示", "没有符合条件的充电桩");
+                onSelected?.Invoke(null);
+                return;
             }
 
-            // 创建简单的选择对话框
-            using (var dialog = new Form())
+            var labels = stations.Select(s =>
+                $"[{s.StationId}] {s.Name} - {s.IpAddress}:{s.Port} - {GetStatusText(s.Status)}").ToArray();
+            int sel = 0;
+            var dlg = GUI.DeclarePanel()
+                .ShowTitle("选择充电桩")
+                .TopMost(true)
+                .InitSize(520, 400)
+                .InitPos(false, 0, 0, 0.5f, 0.5f, 0.5f, 0.5f);
+            dlg.Define(pb =>
             {
-                dialog.Text = "选择充电桩";
-                dialog.Size = new System.Drawing.Size(500, 400);
-                dialog.StartPosition = FormStartPosition.CenterParent;
-
-                var listBox = new ListBox
+                if (pb.Closing()) { dlg.Exit(); onSelected?.Invoke(null); return; }
+                sel = pb.ListBox("充电桩", labels, height: 12);
+                if (pb.Button("确定", distinct: "cs-pick-ok"))
                 {
-                    Dock = DockStyle.Fill,
-                    Font = new System.Drawing.Font("微软雅黑", 10F)
-                };
-
-                foreach (var station in stations)
-                {
-                    listBox.Items.Add($"[{station.StationId}] {station.Name} - {station.IpAddress}:{station.Port} - {GetStatusText(station.Status)}");
+                    dlg.Exit();
+                    onSelected?.Invoke(sel >= 0 && sel < stations.Count ? stations[sel] : null);
                 }
-
-                var btnOK = new Button
+                pb.SameLine(8);
+                if (pb.Button("取消", distinct: "cs-pick-cancel"))
                 {
-                    Text = "确定",
-                    DialogResult = DialogResult.OK,
-                    Dock = DockStyle.Bottom,
-                    Height = 40
-                };
-
-                dialog.Controls.Add(listBox);
-                dialog.Controls.Add(btnOK);
-                dialog.AcceptButton = btnOK;
-
-                if (dialog.ShowDialog() == DialogResult.OK && listBox.SelectedIndex >= 0)
-                {
-                    return stations[listBox.SelectedIndex];
+                    dlg.Exit();
+                    onSelected?.Invoke(null);
                 }
-
-                return null;
-            }
+            });
         }
 
         /// <summary>