.NET Framework 4.8 업그레이드 및 WebView2 통합

- 모든 프로젝트를 .NET Framework 4.0 → 4.8로 업그레이드
- WebView2 NuGet 패키지 추가 (v1.0.3537.50)
- 사용자 매뉴얼 폼 추가 (Frm_WebManual)
  * WebView2 컨트롤 통합
  * localhost:58123 자동 로드
  * MDI 메인 메뉴에 Manual 항목 추가

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

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

ArinWarev1/Forms_Basic/Frm_WebManual.Designer.vb

@@ -0,0 +1,56 @@
+<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
+Partial Class Frm_WebManual
+    Inherits System.Windows.Forms.Form
+
+    'Form은 Dispose를 재정의하여 구성 요소 목록을 정리합니다.
+    <System.Diagnostics.DebuggerNonUserCode()> _
+    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
+        Try
+            If disposing AndAlso components IsNot Nothing Then
+                components.Dispose()
+            End If
+        Finally
+            MyBase.Dispose(disposing)
+        End Try
+    End Sub
+
+    'Windows Form 디자이너에 필요합니다.
+    Private components As System.ComponentModel.IContainer
+
+    '참고: 다음 프로시저는 Windows Form 디자이너에 필요합니다.
+    '수정하려면 Windows Form 디자이너를 사용하십시오.
+    '코드 편집기에서는 수정하지 마세요.
+    <System.Diagnostics.DebuggerStepThrough()> _
+    Private Sub InitializeComponent()
+        Me.WebView21 = New Microsoft.Web.WebView2.WinForms.WebView2()
+        CType(Me.WebView21, System.ComponentModel.ISupportInitialize).BeginInit()
+        Me.SuspendLayout()
+        '
+        'WebView21
+        '
+        Me.WebView21.AllowExternalDrop = True
+        Me.WebView21.CreationProperties = Nothing
+        Me.WebView21.DefaultBackgroundColor = System.Drawing.Color.White
+        Me.WebView21.Dock = System.Windows.Forms.DockStyle.Fill
+        Me.WebView21.Location = New System.Drawing.Point(0, 0)
+        Me.WebView21.Name = "WebView21"
+        Me.WebView21.Size = New System.Drawing.Size(1350, 700)
+        Me.WebView21.TabIndex = 0
+        Me.WebView21.ZoomFactor = 1.0R
+        '
+        'Frm_WebManual
+        '
+        Me.AutoScaleDimensions = New System.Drawing.SizeF(7.0!, 12.0!)
+        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
+        Me.ClientSize = New System.Drawing.Size(1350, 700)
+        Me.Controls.Add(Me.WebView21)
+        Me.Name = "Frm_WebManual"
+        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
+        Me.Text = "사용자 매뉴얼"
+        CType(Me.WebView21, System.ComponentModel.ISupportInitialize).EndInit()
+        Me.ResumeLayout(False)
+
+    End Sub
+
+    Friend WithEvents WebView21 As Microsoft.Web.WebView2.WinForms.WebView2
+End Class