fix: resolve infinite loop in multi-plate autonest and wire into console

- Change while(true) to bounded for-loop (max 100 plates) in MainForm
- Use Drawing.Name comparison instead of reference equality for quantity deduction
- Add Math.Max(0, ...) guard to prevent negative quantities
- Tune SA parameters for faster convergence (cooling=0.995, minTemp=0.1, maxNoImprove=500)
- Add --autonest flag to OpenNest.Console for CLI-based NFP autonesting

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

OpenNest/Forms/MainForm.cs

@@ -680,8 +680,9 @@ namespace OpenNest.Forms
                 return;
 
             var items = form.GetNestItems();
+            var maxPlates = 100;
 
-            while (true)
+            for (var plateCount = 0; plateCount < maxPlates; plateCount++)
             {
                 var remaining = items.Where(i => i.Quantity > 0).ToList();
 
@@ -698,14 +699,15 @@ namespace OpenNest.Forms
                     break;
 
                 plate.Parts.AddRange(parts);
-                activeForm.Nest.UpdateDrawingQuantities();
 
-                // Reduce remaining quantities by how many were placed per drawing.
+                // Deduct placed quantities using Drawing.Name to avoid reference issues.
                 foreach (var item in remaining)
                 {
-                    var placed = parts.Count(p => p.BaseDrawing == item.Drawing);
-                    item.Quantity -= placed;
+                    var placed = parts.Count(p => p.BaseDrawing.Name == item.Drawing.Name);
+                    item.Quantity = System.Math.Max(0, item.Quantity - placed);
                 }
+
+                activeForm.Nest.UpdateDrawingQuantities();
             }
         }