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/Services/CutListPackingService.cs

@@ -0,0 +1,65 @@
+using CutList.Core;
+using CutList.Core.Nesting;
+using CutList.Web.Data.Entities;
+
+namespace CutList.Web.Services;
+
+public class CutListPackingService
+{
+    public PackResult Pack(IEnumerable<ProjectPart> parts, IEnumerable<ProjectStockBin> stockBins, decimal kerfInches)
+    {
+        var engine = new MultiBinEngine();
+        engine.Spacing = (double)kerfInches;
+        engine.Strategy = PackingStrategy.AdvancedFit;
+
+        // Convert stock bins to MultiBin
+        var multiBins = stockBins
+            .Where(b => b.LengthInches > 0)
+            .Select(b => new MultiBin((double)b.LengthInches, b.Quantity, b.Priority))
+            .ToList();
+
+        engine.SetBins(multiBins);
+
+        // Convert parts to BinItem (expand quantity)
+        var items = parts
+            .SelectMany(p => Enumerable.Range(0, p.Quantity)
+                .Select(_ => new BinItem(p.Name, (double)p.LengthInches)))
+            .ToList();
+
+        return engine.Pack(items);
+    }
+
+    public PackingSummary GetSummary(PackResult result)
+    {
+        var summary = new PackingSummary();
+
+        foreach (var bin in result.Bins)
+        {
+            summary.TotalBins++;
+            summary.TotalMaterial += bin.Length;
+            summary.TotalUsed += bin.UsedLength;
+            summary.TotalWaste += bin.RemainingLength;
+            summary.TotalPieces += bin.Items.Count;
+        }
+
+        summary.ItemsNotPlaced = result.ItemsNotUsed.Count;
+
+        if (summary.TotalMaterial > 0)
+        {
+            summary.Efficiency = summary.TotalUsed / summary.TotalMaterial * 100;
+        }
+
+        return summary;
+    }
+}
+
+public class PackingSummary
+{
+    public int TotalBins { get; set; }
+    public int TotalPieces { get; set; }
+    public double TotalMaterial { get; set; }
+    public double TotalUsed { get; set; }
+    public double TotalWaste { get; set; }
+    public double Efficiency { get; set; }
+    public int ItemsNotPlaced { get; set; }
+}