fix(report): omit trailing empty stock plates

OpenNest.Reporting/NestReportBuilder.cs

@@ -27,7 +27,13 @@ public static class NestReportBuilder
             return item;
         }
 
-        for (var index = 0; index < nest.Plates.Count; index++)
+        // The editor can leave unused stock at the end of a job. Exclude those placeholders
+        // from report pages and totals without changing plate numbers or the live nest.
+        var plateCount = nest.Plates.Count;
+        while (plateCount > 0 && nest.Plates[plateCount - 1]?.Parts.Count == 0)
+            plateCount--;
+
+        for (var index = 0; index < plateCount; index++)
         {
             var number = index + 1;
             var plate = nest.Plates[index];

OpenNest.Tests/Reporting/NestPdfWriterTests.cs

@@ -79,6 +79,7 @@ public sealed class NestPdfWriterTests : IDisposable
     public void Write_EmptyAndDemandOnlyJobsProduceExplicitSummaryOnlyReports()
     {
         var nest = new Nest("Empty test") { Units = Units.Millimeters };
+        nest.Plates.Add(new Plate(24, 48) { Quantity = 1 });
         var empty = ReportPdf.Text(WriteReport(nest, "empty.pdf"), 1);
         Assert.Contains("No plates in this job.", empty);
         Assert.Contains("No parts in this job.", empty);
@@ -91,6 +92,21 @@ public sealed class NestPdfWriterTests : IDisposable
         Assert.Contains("Page 1 of 1", demand);
     }
 
+    [SkippableFact]
+    public void Write_TrailingEmptyStockDoesNotAddPagesOrCountTowardTotals()
+    {
+        var nest = NestReportTestData.CreateMultiPlateNest();
+        var expected = ReportPdf.Pages(WriteReport(nest, "without-empty-stock.pdf"));
+        nest.Plates.Add(new Plate(24, 48) { Quantity = 5 });
+        nest.Plates.Add(new Plate(30, 60) { Quantity = 2 });
+        var before = NestReportBuilderTests.Fingerprint(nest);
+
+        var actual = ReportPdf.Pages(WriteReport(nest));
+
+        Assert.Equal(expected, actual);
+        Assert.Equal(before, NestReportBuilderTests.Fingerprint(nest));
+    }
+
     [Fact]
     public void Write_TabbedLeadInPartStrokesEachOpenContourSeparately()
     {

docs/nest-reports.md

@@ -31,6 +31,8 @@ the selected plate, or certify that a layout passed geometry/pre-post checks.
 - Recount nested quantities from placements times sheet copies exactly once using
   checked wide integers. Include unplaced demand; report shortage and extra
   separately. Cached `Quantity.Nested` is not authoritative.
+- Omit trailing empty stock plates from report pages, layout counts and physical
+  sheet totals. Keep the live nest and remaining plate numbers unchanged.
 - Distinguish distinct layouts from physical sheets. Per-sheet quantities do not
   include copies; total quantities do. Utilization uses net part area divided by
   full sheet area, excluding cutoffs.