feat: MachineBridge 추가 및 fetch API를 HostObject 호출로 전환

- WebView2 HostObject 기반 MachineBridge 브릿지 클래스 추가
  - MachineBridge.cs (메인), Login, Dashboard, Todo, Common, Jobreport, Kuntae, Project 모듈
- WebSocketServer.cs 추가 (실시간 통신용)
- fDashboardNew 다이얼로그 추가
- Jobreport/index.html, Project/index.html의 fetch API를 machine HostObject 호출로 전환
- DashBoardController.cs의 gcode null 처리 추가
- 사용하지 않는 파일 삭제 (navigation.html, common-nav.js, navigation.js, _add_to_project.py, _project_updater.js)

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

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

Project/Web/MachineBridge/MachineBridge.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+using Newtonsoft.Json;
+using System.IO;
+using System.Linq;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.NetworkInformation;
+using System.Data;
+using System.Data.SqlClient;
+using FCOMMON;
+using Project.Web.Model;
+
+namespace Project.Web
+{
+    // Important: Allows JavaScript to see this class
+    [ClassInterface(ClassInterfaceType.AutoDual)]
+    [ComVisible(true)]
+    public partial class MachineBridge
+    {
+        // Reference to the main form to update logic
+        private Dialog.fDashboardNew _host;
+
+        public MachineBridge(Dialog.fDashboardNew host)
+        {
+            _host = host;
+        }
+    }
+
+    /// <summary>
+    /// 로그인 결과 클래스
+    /// </summary>
+    public class LoginResult
+    {
+        public bool Success { get; set; }
+        public string Message { get; set; }
+        public string RedirectUrl { get; set; }
+        public string UserName { get; set; }
+        public string VersionWarning { get; set; }
+    }
+}