style: apply CSharpier formatting to all C# sources

Repo-wide sweep with the pinned CSharpier 1.3.0 tool. Whitespace and
line-wrapping only; OpenNest.Engine.Tests (109) and OpenNest.IO.Tests
pass after reformat, full solution builds 0 errors.

Added .csharpierignore so csproj/config XML keeps its existing layout
(CSharpier's XML wrapping churns attributes with zero benefit).

Formatting is now enforceable: dotnet csharpier check . passes.

OpenNest.Core/CNC/CuttingStrategy/Tabs/BreakerTab.cs

@@ -1,5 +1,5 @@
-using OpenNest.Geometry;
 using System.Collections.Generic;
+using OpenNest.Geometry;
 
 namespace OpenNest.CNC.CuttingStrategy
 {
@@ -10,8 +10,11 @@ namespace OpenNest.CNC.CuttingStrategy
         public double BreakerAngle { get; set; }
 
         public override List<ICode> Generate(
-            Vector tabStartPoint, Vector tabEndPoint, double contourNormalAngle,
-            RotationType winding = RotationType.CW)
+            Vector tabStartPoint,
+            Vector tabEndPoint,
+            double contourNormalAngle,
+            RotationType winding = RotationType.CW
+        )
         {
             var codes = new List<ICode>();
 
@@ -21,7 +24,8 @@ namespace OpenNest.CNC.CuttingStrategy
             var scoreAngle = contourNormalAngle + System.Math.PI;
             var scoreEnd = new Vector(
                 tabStartPoint.X + BreakerDepth * System.Math.Cos(scoreAngle),
-                tabStartPoint.Y + BreakerDepth * System.Math.Sin(scoreAngle));
+                tabStartPoint.Y + BreakerDepth * System.Math.Sin(scoreAngle)
+            );
             codes.Add(new LinearMove(scoreEnd));
             codes.Add(new RapidMove(tabEndPoint));
 

OpenNest.Core/CNC/CuttingStrategy/Tabs/MachineTab.cs

@@ -1,5 +1,5 @@
-using OpenNest.Geometry;
 using System.Collections.Generic;
+using OpenNest.Geometry;
 
 namespace OpenNest.CNC.CuttingStrategy
 {
@@ -8,13 +8,13 @@ namespace OpenNest.CNC.CuttingStrategy
         public int MachineTabId { get; set; }
 
         public override List<ICode> Generate(
-            Vector tabStartPoint, Vector tabEndPoint, double contourNormalAngle,
-            RotationType winding = RotationType.CW)
+            Vector tabStartPoint,
+            Vector tabEndPoint,
+            double contourNormalAngle,
+            RotationType winding = RotationType.CW
+        )
         {
-            return new List<ICode>
-            {
-                new RapidMove(tabEndPoint)
-            };
+            return new List<ICode> { new RapidMove(tabEndPoint) };
         }
     }
 }

OpenNest.Core/CNC/CuttingStrategy/Tabs/NormalTab.cs

@@ -1,5 +1,5 @@
-using OpenNest.Geometry;
 using System.Collections.Generic;
+using OpenNest.Geometry;
 
 namespace OpenNest.CNC.CuttingStrategy
 {
@@ -11,8 +11,11 @@ namespace OpenNest.CNC.CuttingStrategy
         public double CutoutMaxHeight { get; set; }
 
         public override List<ICode> Generate(
-            Vector tabStartPoint, Vector tabEndPoint, double contourNormalAngle,
-            RotationType winding = RotationType.CW)
+            Vector tabStartPoint,
+            Vector tabEndPoint,
+            double contourNormalAngle,
+            RotationType winding = RotationType.CW
+        )
         {
             var codes = new List<ICode>();
 
@@ -29,8 +32,10 @@ namespace OpenNest.CNC.CuttingStrategy
 
         public bool AppliesToCutout(double cutoutWidth, double cutoutHeight)
         {
-            return cutoutWidth >= CutoutMinWidth && cutoutWidth <= CutoutMaxWidth
-                && cutoutHeight >= CutoutMinHeight && cutoutHeight <= CutoutMaxHeight;
+            return cutoutWidth >= CutoutMinWidth
+                && cutoutWidth <= CutoutMaxWidth
+                && cutoutHeight >= CutoutMinHeight
+                && cutoutHeight <= CutoutMaxHeight;
         }
     }
 }

OpenNest.Core/CNC/CuttingStrategy/Tabs/Tab.cs

@@ -1,5 +1,5 @@
-using OpenNest.Geometry;
 using System.Collections.Generic;
+using OpenNest.Geometry;
 
 namespace OpenNest.CNC.CuttingStrategy
 {
@@ -10,7 +10,10 @@ namespace OpenNest.CNC.CuttingStrategy
         public LeadOut TabLeadOut { get; set; }
 
         public abstract List<ICode> Generate(
-            Vector tabStartPoint, Vector tabEndPoint, double contourNormalAngle,
-            RotationType winding = RotationType.CW);
+            Vector tabStartPoint,
+            Vector tabEndPoint,
+            double contourNormalAngle,
+            RotationType winding = RotationType.CW
+        );
     }
 }