feat: React 프론트엔드 기능 대폭 확장

- 월별근무표: 휴일/근무일 관리, 자동 초기화
- 메일양식: 템플릿 CRUD, To/CC/BCC 설정
- 그룹정보: 부서 관리, 비트 연산 기반 권한 설정
- 업무일지: 수정 성공 메시지 제거, 오늘 근무시간 필터링 수정
- 웹소켓 메시지 type 충돌 버그 수정

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

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

Project/Dialog/fDashboard.cs

@@ -0,0 +1,120 @@
+using FCM0000.Mail;
+using FCOMMON;
+using Microsoft.Web.WebView2.Core;
+using Microsoft.Web.WebView2.WinForms;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Project.Dialog
+{
+    public partial class fDashboard : fBase
+    {
+        private WebView2 webView;
+        private Web.MachineBridge _machineBridge;
+
+        public fDashboard()
+        {
+            InitializeComponent();
+            InitializeWebView2();
+            _machineBridge = new Web.MachineBridge(this);
+        }
+
+        bool loadok = false;
+        public void RefreshView()
+        {
+            if (loadok)
+                webView.Reload();
+        }
+        private void InitializeWebView2()
+        {
+            // 수동으로 WebView2 컨트롤 생성
+            this.webView = new WebView2();
+
+            // 기본 속성 설정
+            this.webView.CreationProperties = null;
+            this.webView.DefaultBackgroundColor = Color.White;
+            this.webView.Dock = DockStyle.Fill;
+            this.webView.Location = new Point(0, 0);
+            this.webView.Name = "webView21";
+            this.webView.Size = new Size(800, 600);
+            this.webView.TabIndex = 0;
+            this.webView.ZoomFactor = 1D;
+
+            // 폼에 추가
+            this.Controls.Add(this.webView);
+
+            // 비동기 초기화
+            InitializeAsync();
+        }
+        private async void InitializeAsync()
+        {
+            try
+            {
+                // Fixed Version 경로 설정
+                string runtimePath = Path.Combine(Application.StartupPath, "WebView2Runtime");
+
+                if (Directory.Exists(runtimePath))
+                {
+                    var env = await CoreWebView2Environment.CreateAsync(runtimePath);
+                    await this.webView.EnsureCoreWebView2Async(env);
+                }
+                else
+                {
+                    // 시스템에 설치된 WebView2 사용
+                    await this.webView.EnsureCoreWebView2Async();
+                }
+
+                var wwwroot = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Web", "dist");
+                webView.CoreWebView2.SetVirtualHostNameToFolderMapping(
+              "hmi.local",
+              wwwroot,
+              CoreWebView2HostResourceAccessKind.Allow);
+
+
+                // 2. Inject Native Object
+                webView.CoreWebView2.AddHostObjectToScript("machine", _machineBridge);
+
+                Pub.WebServiceURL = "http://hmi.local";
+
+
+
+                RefreshPage();
+                label1.Visible = false;
+                loadok = true;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"WebView2 초기화 실패: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 로그인 상태에 따라서 페이지를 전환한다
+        /// </summary>
+        public void RefreshPage()
+        {
+            webView.Source = new Uri($"{Pub.WebServiceURL}/index.html");
+            //if (FCOMMON.info.Login.no.isEmpty())
+            //webView.Source = new Uri($"{Pub.WebServiceURL}/login.html");
+           // else
+             //   webView.Source = new Uri($"{Pub.WebServiceURL}/DashBoard/index.html");
+        }
+        protected override void OnLoad(EventArgs e)
+        {
+            base.OnLoad(e);
+            EnsureVisibleAndUsableSize();
+        }
+        private void label1_Click(object sender, EventArgs e)
+        {
+
+        }
+    }
+}