feat: Add CutList.Web Blazor Server application

Add a new web-based frontend for cut list optimization using:
- Blazor Server with .NET 8
- Entity Framework Core with MSSQL LocalDB
- Full CRUD for Materials, Suppliers, Projects, and Cutting Tools
- Supplier stock length management for quick project setup
- Integration with CutList.Core for bin packing optimization
- Print-friendly HTML reports with efficiency statistics

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CutList.Web/Components/Shared/ConfirmDialog.razor

@@ -0,0 +1,66 @@
+@if (IsVisible)
+{
+    <div class="modal fade show d-block" tabindex="-1" style="background-color: rgba(0,0,0,0.5);">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h5 class="modal-title">@Title</h5>
+                    <button type="button" class="btn-close" @onclick="Cancel"></button>
+                </div>
+                <div class="modal-body">
+                    <p>@Message</p>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" @onclick="Cancel">Cancel</button>
+                    <button type="button" class="btn @ConfirmButtonClass" @onclick="Confirm">@ConfirmText</button>
+                </div>
+            </div>
+        </div>
+    </div>
+}
+
+@code {
+    [Parameter]
+    public string Title { get; set; } = "Confirm";
+
+    [Parameter]
+    public string Message { get; set; } = "Are you sure?";
+
+    [Parameter]
+    public string ConfirmText { get; set; } = "Confirm";
+
+    [Parameter]
+    public string ConfirmButtonClass { get; set; } = "btn-danger";
+
+    [Parameter]
+    public EventCallback OnConfirm { get; set; }
+
+    [Parameter]
+    public EventCallback OnCancel { get; set; }
+
+    public bool IsVisible { get; private set; }
+
+    public void Show()
+    {
+        IsVisible = true;
+        StateHasChanged();
+    }
+
+    public void Hide()
+    {
+        IsVisible = false;
+        StateHasChanged();
+    }
+
+    private async Task Confirm()
+    {
+        Hide();
+        await OnConfirm.InvokeAsync();
+    }
+
+    private async Task Cancel()
+    {
+        Hide();
+        await OnCancel.InvokeAsync();
+    }
+}