feat: Redesign Results page for multi-material output

Updates Results page to display packing results grouped by material,
showing in-stock vs. to-be-purchased breakdown with order summaries.

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

CutList.Web/Components/Shared/CutListReport.razor

@@ -9,9 +9,9 @@
         <div class="meta-info">
             <div class="meta-row"><span>Date:</span> @DateTime.Now.ToString("g")</div>
             <div class="meta-row"><span>Project:</span> @Project.Name</div>
-            @if (Project.Material != null)
+            @if (!string.IsNullOrWhiteSpace(Project.Customer))
             {
-                <div class="meta-row"><span>Material:</span> @Project.Material.Shape - @Project.Material.Size</div>
+                <div class="meta-row"><span>Customer:</span> @Project.Customer</div>
             }
             @if (Project.CuttingTool != null)
             {