feat: improve DXF export and cross-platform file handling

- PepSettings: add DrawingsDirectory property for DXF endpoint config
- DrawingDxfExporter: support subprogram calls, skip non-cut linear moves,
  remove spurious radians-to-degrees conversion on arc angles, set AC1018 DXF version
- DrawingReader: handle .loop-info/.cadsnapshot entries gracefully, derive
  DrawingInfo from loop names when .info entry is absent, use FileShare.Read
- DrawingInfoReader: use TryParse instead of Parse for material number
- Drawing: make GetLoopName public (used by DrawingDxfExporter)
- ZipHelper: use FileShare.Read to allow concurrent readers on Windows/Linux
- NestFilterData: skip status filter when value is "All"

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

.dockerignore

@@ -0,0 +1,4 @@
+**/.git
+**/obj
+**/bin
+*.md

Dockerfile

@@ -0,0 +1,19 @@
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+WORKDIR /src
+
+COPY PepApi.Core/PepApi.Core.csproj PepApi.Core/
+COPY PepLib.Core/PepLib.Core.csproj PepLib.Core/
+RUN dotnet restore PepApi.Core/PepApi.Core.csproj
+
+COPY PepApi.Core/ PepApi.Core/
+COPY PepLib.Core/ PepLib.Core/
+
+RUN dotnet publish PepApi.Core/PepApi.Core.csproj -c Release -o /app/publish
+
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+
+ENV ASPNETCORE_URLS=http://+:8085
+
+ENTRYPOINT ["dotnet", "PepApi.Core.dll"]

PepApi.Core/Configuration/PepSettings.cs

@@ -4,4 +4,5 @@ public class PepSettings
 {
     public string NestDirectory { get; set; } = string.Empty;
     public string MaterialsFile { get; set; } = string.Empty;
+    public string DrawingsDirectory { get; set; } = string.Empty;
 }

PepApi.Core/Controllers/DrawingsController.cs

@@ -1,7 +1,10 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+using PepApi.Core.Configuration;
 using PepApi.Core.Models;
 using PepLib.Data;
+using PepLib.IO;
 
 namespace PepApi.Core.Controllers;
 
@@ -10,10 +13,12 @@ namespace PepApi.Core.Controllers;
 public class DrawingsController : ControllerBase
 {
     private readonly PepDB _db;
+    private readonly PepSettings _settings;
 
-    public DrawingsController(PepDB db)
+    public DrawingsController(PepDB db, IOptions<PepSettings> settings)
     {
         _db = db;
+        _settings = settings.Value;
     }
 
     /// <summary>
@@ -80,7 +85,7 @@ public class DrawingsController : ControllerBase
     /// <summary>
     /// Get a drawing by exact name.
     /// </summary>
-    [HttpGet("name/{name}")]
+    [HttpGet("by-name/{name}")]
     public async Task<ActionResult<DrawingDetails>> GetDrawingByName(string name)
     {
         var drawing = await _db.Drawings
@@ -147,6 +152,41 @@ public class DrawingsController : ControllerBase
         });
     }
 
+    /// <summary>
+    /// Export a drawing as a DXF file.
+    /// </summary>
+    [HttpGet("{name}/dxf")]
+    public async Task<IActionResult> GetDrawingDxf(string name)
+    {
+        var drawing = await _db.Drawings
+            .Where(d => d.Name.ToUpper() == name.ToUpper())
+            .FirstOrDefaultAsync();
+
+        if (drawing == null)
+            return NotFound(new { message = "Drawing not found in database" });
+
+        if (string.IsNullOrEmpty(_settings.DrawingsDirectory))
+            return StatusCode(503, new { message = "DrawingsDirectory is not configured" });
+
+        var filePath = Path.Combine(_settings.DrawingsDirectory, drawing.File);
+
+        if (!System.IO.File.Exists(filePath))
+            return NotFound(new { message = $"Drawing file not found: {drawing.File}" });
+
+        PepLib.Models.Drawing pep;
+        try
+        {
+            pep = PepLib.Models.Drawing.Load(filePath);
+        }
+        catch (Exception ex)
+        {
+            return StatusCode(500, new { message = $"Failed to load drawing: {ex.Message}" });
+        }
+
+        var stream = DrawingDxfExporter.Export(pep);
+        return File(stream, "application/dxf", $"{name}.dxf");
+    }
+
     private static DrawingDetails ConvertToDetails(Drawing drawing)
     {
         return new DrawingDetails

PepApi.Core/Controllers/NestsController.cs

@@ -101,7 +101,7 @@ public class NestsController : ControllerBase
         return File(bytes, mimeType, fileName);
     }
 
-    [HttpGet("{nestName}/download")]
+    [HttpGet("{nestName:regex(^(?!\\d{{4}}$).+)}/download")]
     public async Task<IActionResult> DownloadFile(string nestName)
     {
         var filePath = await GetNestPathAsync(nestName);
@@ -131,7 +131,7 @@ public class NestsController : ControllerBase
         return Ok(combined);
     }
 
-    [HttpGet("{nestName}/plates")]
+    [HttpGet("{nestName:regex(^(?!\\d{{4}}$).+)}/plates")]
     public async Task<ActionResult<List<Plate>>> GetPlates(string nestName)
     {
         var nestFile = await GetNestPathAsync(nestName);
@@ -346,13 +346,22 @@ public class NestsController : ControllerBase
                 var pepPath = Path.Combine(_nestDirectory, nestName + ".pep");
                 if (System.IO.File.Exists(pepPath))
                     return pepPath;
+
+                var pepMatch = FindFileByPrefix(_nestDirectory, nestName, ".pep");
+                if (pepMatch != null)
+                    return pepMatch;
             }
 
             // Older nests use .zip in year subdirectory
-            var zipPath = Path.Combine(_nestDirectory, year.Value.ToString(), nestName + ".zip");
+            var yearDir = Path.Combine(_nestDirectory, year.Value.ToString());
+            var zipPath = Path.Combine(yearDir, nestName + ".zip");
             if (System.IO.File.Exists(zipPath))
                 return zipPath;
 
+            var zipMatch = FindFileByPrefix(yearDir, nestName, ".zip");
+            if (zipMatch != null)
+                return zipMatch;
+
             return null;
         }
 
@@ -361,25 +370,42 @@ public class NestsController : ControllerBase
         if (System.IO.File.Exists(flatPepPath))
             return flatPepPath;
 
+        var flatPepMatch = FindFileByPrefix(_nestDirectory, nestName, ".pep");
+        if (flatPepMatch != null)
+            return flatPepMatch;
+
         // Fall back to year-based directory lookup for older nests
+        var upperName = nestName.ToUpper();
         var nestHeader = await _db.NestHeaders
-            .Where(n => n.NestName.ToUpper() == nestName.ToUpper() && n.DateProgrammed != null)
+            .Where(n => (n.NestName.ToUpper() == upperName || n.NestName.ToUpper().StartsWith(upperName + "-"))
+                        && n.DateProgrammed != null)
             .OrderByDescending(n => n.DateProgrammed)
             .FirstOrDefaultAsync();
 
         if (nestHeader == null)
             return null;
 
+        var fullName = nestHeader.NestName;
         var dbYear = nestHeader.DateProgrammed!.Value.Year;
 
         // Older nests used .zip extension
-        var yearZipPath = Path.Combine(_nestDirectory, dbYear.ToString(), nestName + ".zip");
+        var yearZipPath = Path.Combine(_nestDirectory, dbYear.ToString(), fullName + ".zip");
         if (System.IO.File.Exists(yearZipPath))
             return yearZipPath;
 
         return null;
     }
 
+    private static string? FindFileByPrefix(string directory, string prefix, string extension)
+    {
+        if (!Directory.Exists(directory))
+            return null;
+
+        var pattern = prefix + "-*" + extension;
+        var matches = Directory.GetFiles(directory, pattern);
+        return matches.Length > 0 ? matches.Order().First() : null;
+    }
+
     private async Task<NestDetails> GetNestDetailsAsync(string nestFilePath)
     {
         var nest = Nest.Load(nestFilePath);

PepApi.Core/Models/NestFilterData.cs

@@ -77,7 +77,7 @@ namespace PepApi.Core.Models
                 nests = nests.Where(n => n.DateCreated <= this.EndDate);
             }
 
-            if (this.Status != null)
+            if (this.Status != null && !this.Status.Equals("All", StringComparison.OrdinalIgnoreCase))
             {
                 var x = this.Status.ToUpper();
                 nests = nests.Where(n => n.Status.ToUpper() == x);

PepApi.Core/Program.cs

@@ -6,8 +6,9 @@ var builder = WebApplication.CreateBuilder(args);
 
 
 
-// Enable Windows Service hosting
+// Enable Windows Service hosting (only on Windows)
-builder.Host.UseWindowsService();
+if (OperatingSystem.IsWindows())
+    builder.Host.UseWindowsService();
 
 // Add services to the container
 builder.Services.AddControllers()

PepApi.sln

@@ -9,6 +9,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PepLib.Core", "PepLib.Core\
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PepMcp", "PepMcp\PepMcp.csproj", "{28899B7B-2185-4141-B348-E227DFB355E9}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PepLib.Core.Tests", "PepLib.Core.Tests\PepLib.Core.Tests.csproj", "{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -55,6 +57,18 @@ Global
 		{28899B7B-2185-4141-B348-E227DFB355E9}.Release|x64.Build.0 = Release|Any CPU
 		{28899B7B-2185-4141-B348-E227DFB355E9}.Release|x86.ActiveCfg = Release|Any CPU
 		{28899B7B-2185-4141-B348-E227DFB355E9}.Release|x86.Build.0 = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|x64.Build.0 = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Debug|x86.Build.0 = Debug|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|x64.ActiveCfg = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|x64.Build.0 = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|x86.ActiveCfg = Release|Any CPU
+		{FF7E4CB2-8825-4A03-9D0C-CC713BD93A18}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PepLib.Core.Tests/IO/DrawingDxfExporterTests.cs

@@ -0,0 +1,67 @@
+using PepLib.Codes;
+using PepLib.Enums;
+using PepLib.Geometry;
+using PepLib.IO;
+using PepLib.Models;
+using Xunit;
+
+namespace PepLib.Core.Tests.IO;
+
+public class DrawingDxfExporterTests
+{
+    [Fact]
+    public void Export_RectangularLoop_ProducesFourLines()
+    {
+        // Arrange: a square 10x10 in incremental mode
+        var drawing = new Drawing();
+        drawing.Info = new DrawingInfo { Name = "TEST" };
+        var loop = new Loop { Name = "TEST.loop-000" };
+        // Mode defaults to Incremental in Loop constructor
+        loop.Add(new RapidMove(new Vector(0, 0)));   // position at (0,0)
+        loop.Add(new LinearMove(new Vector(10, 0)));  // → (10,0)
+        loop.Add(new LinearMove(new Vector(0, 10)));  // → (10,10)
+        loop.Add(new LinearMove(new Vector(-10, 0))); // → (0,10)
+        loop.Add(new LinearMove(new Vector(0, -10))); // → (0,0)
+        drawing.Loops.Add(loop);
+
+        // Act
+        using var stream = DrawingDxfExporter.Export(drawing);
+
+        // Assert: stream is non-empty and contains 4 line entities
+        Assert.True(stream.Length > 0);
+
+        stream.Position = 0;
+        using var reader = new ACadSharp.IO.DxfReader(stream);
+        var doc = reader.Read();
+        var lines = doc.Entities.OfType<ACadSharp.Entities.Line>().ToList();
+        var arcs = doc.Entities.OfType<ACadSharp.Entities.Arc>().ToList();
+        Assert.Equal(4, lines.Count);
+        Assert.Empty(arcs);
+    }
+
+    [Fact]
+    public void Export_LoopWithArc_ProducesLineAndArc()
+    {
+        var drawing = new Drawing();
+        drawing.Info = new DrawingInfo { Name = "TEST" };
+        var loop = new Loop { Name = "TEST.loop-000" };
+        loop.Add(new RapidMove(new Vector(5, 0)));                              // start at (5,0)
+        loop.Add(new LinearMove(new Vector(5, 0)));                             // → (10,0)
+        loop.Add(new CircularMove(new Vector(-5, 5), new Vector(-5, 0), RotationType.CCW)); // arc: end=(5,5), center=(5,0)
+        drawing.Loops.Add(loop);
+
+        using var stream = DrawingDxfExporter.Export(drawing);
+
+        stream.Position = 0;
+        using var reader = new ACadSharp.IO.DxfReader(stream);
+        var doc = reader.Read();
+        var lines = doc.Entities.OfType<ACadSharp.Entities.Line>().ToList();
+        var arcs = doc.Entities.OfType<ACadSharp.Entities.Arc>().ToList();
+        Assert.Single(lines);
+        Assert.Single(arcs);
+        var arc = doc.Entities.OfType<ACadSharp.Entities.Arc>().Single();
+        // Angles must be in degrees (0..360), not radians (0..6.28)
+        Assert.InRange(arc.StartAngle, 0, 360);
+        Assert.InRange(arc.EndAngle, 0, 360);
+    }
+}

PepLib.Core.Tests/PepLib.Core.Tests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="ACadSharp" Version="3.1.32" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\PepLib.Core\PepLib.Core.csproj" />
+  </ItemGroup>
+
+</Project>

PepLib.Core/IO/DrawingDxfExporter.cs

@@ -0,0 +1,148 @@
+using ACadSharp;
+using ACadSharp.IO;
+using ACadSharp.Tables;
+using CSMath;
+using PepLib.Codes;
+using PepLib.Enums;
+using PepLib.Geometry;
+using PepLib.Models;
+using AcadArc = ACadSharp.Entities.Arc;
+using AcadCircle = ACadSharp.Entities.Circle;
+using AcadLine = ACadSharp.Entities.Line;
+
+namespace PepLib.IO;
+
+public static class DrawingDxfExporter
+{
+    public static Stream Export(Drawing drawing)
+    {
+        var doc = new CadDocument();
+        doc.Header.Version = ACadVersion.AC1018;
+
+        // Collect loop IDs that are called as subprograms so we skip drawing them as top-level
+        var subprogramIds = new HashSet<int>();
+        foreach (var loop in drawing.Loops)
+        {
+            foreach (var code in loop)
+            {
+                if (code.CodeType() == CodeType.SubProgramCall)
+                    subprogramIds.Add(((SubProgramCall)code).LoopId);
+            }
+        }
+
+        foreach (var loop in drawing.Loops)
+        {
+            var loopNumber = GetLoopNumber(loop.Name);
+            if (subprogramIds.Contains(loopNumber))
+                continue; // drawn inline at SubProgramCall positions
+
+            var layer = new Layer(loop.Name);
+            doc.Layers.Add(layer);
+
+            DrawLoop(doc, drawing, loop, layer, new Vector());
+        }
+
+        var buffer = new MemoryStream();
+        using (var writer = new DxfWriter(buffer, doc, false))
+        {
+            writer.Write();
+        }
+
+        return new MemoryStream(buffer.ToArray());
+    }
+
+    private static Vector DrawLoop(CadDocument doc, Drawing drawing, Loop loop, Layer layer, Vector startPos)
+    {
+        var pos = startPos;
+
+        foreach (var code in loop)
+        {
+            switch (code.CodeType())
+            {
+                case CodeType.RapidMove:
+                    pos = Advance(pos, ((RapidMove)code).EndPoint, loop.Mode);
+                    break;
+
+                case CodeType.LinearMove:
+                    var lm = (LinearMove)code;
+                    if (lm.Type == EntityType.Cut)
+                    {
+                        var lineEnd = Advance(pos, lm.EndPoint, loop.Mode);
+                        doc.Entities.Add(new AcadLine
+                        {
+                            StartPoint = ToXYZ(pos),
+                            EndPoint = ToXYZ(lineEnd),
+                            Layer = layer
+                        });
+                        pos = lineEnd;
+                    }
+                    else
+                    {
+                        pos = Advance(pos, lm.EndPoint, loop.Mode);
+                    }
+                    break;
+
+                case CodeType.CircularMove:
+                    var cm = (CircularMove)code;
+                    var arcEnd = Advance(pos, cm.EndPoint, loop.Mode);
+                    var arcCenter = Advance(pos, cm.CenterPoint, loop.Mode);
+
+                    var dx = pos.X - arcCenter.X;
+                    var dy = pos.Y - arcCenter.Y;
+                    var radius = Math.Sqrt(dx * dx + dy * dy);
+
+                    var startAngle = Math.Atan2(pos.Y - arcCenter.Y, pos.X - arcCenter.X);
+                    var endAngle = Math.Atan2(arcEnd.Y - arcCenter.Y, arcEnd.X - arcCenter.X);
+
+                    if (cm.Rotation == RotationType.CW)
+                        (startAngle, endAngle) = (endAngle, startAngle);
+
+                    if (Math.Abs(startAngle - endAngle) < 1e-10)
+                    {
+                        doc.Entities.Add(new AcadCircle
+                        {
+                            Center = ToXYZ(arcCenter),
+                            Radius = radius,
+                            Layer = layer
+                        });
+                    }
+                    else
+                    {
+                        doc.Entities.Add(new AcadArc
+                        {
+                            Center = ToXYZ(arcCenter),
+                            Radius = radius,
+                            StartAngle = startAngle,
+                            EndAngle = endAngle,
+                            Layer = layer
+                        });
+                    }
+
+                    pos = arcEnd;
+                    break;
+
+                case CodeType.SubProgramCall:
+                    var call = (SubProgramCall)code;
+                    var subLoop = drawing.Loops.FirstOrDefault(l => l.Name == drawing.GetLoopName(call.LoopId));
+                    if (subLoop != null)
+                        DrawLoop(doc, drawing, subLoop, layer, pos);
+                    // pos unchanged — subprograms are closed shapes that return to start
+                    break;
+            }
+        }
+
+        return pos;
+    }
+
+    private static int GetLoopNumber(string loopName)
+    {
+        var idx = loopName.LastIndexOf(".loop-", StringComparison.OrdinalIgnoreCase);
+        if (idx < 0) return -1;
+        return int.TryParse(loopName.Substring(idx + 6), out var n) ? n : -1;
+    }
+
+    private static Vector Advance(Vector current, Vector offset, ProgrammingMode mode) =>
+        mode == ProgrammingMode.Incremental ? current + offset : offset;
+
+    private static XYZ ToXYZ(Vector v) => new XYZ(v.X, v.Y, 0);
+}

PepLib.Core/IO/DrawingInfoReader.cs

@@ -34,7 +34,8 @@ namespace PepLib.IO
 
             stream.Seek(0x9, SeekOrigin.Current);
 
-            Info.MaterialNumber = int.Parse(ReadString(0x40, ref stream));
+            int.TryParse(ReadString(0x40, ref stream), out var materialNumber);
+            Info.MaterialNumber = materialNumber;
             Info.MaterialGrade = ReadString(0x10, ref stream);
             Info.ProgrammedBy = ReadString(0x40, ref stream);
             Info.CreatedBy = ReadString(0x40, ref stream);

PepLib.Core/IO/DrawingReader.cs

@@ -1,5 +1,4 @@
 using PepLib.Models;
-using System.Diagnostics;
 using System.IO.Compression;
 using System.Text.RegularExpressions;
 
@@ -38,6 +37,11 @@ namespace PepLib.IO
                             LoadInfo(memstream);
                             memstream.Close();
                             continue;
+
+                        case ".loop-info":
+                        case ".cadsnapshot":
+                            memstream.Close();
+                            continue;
                     }
 
                     if (Regex.IsMatch(extension, "loop-\\d\\d\\d"))
@@ -47,6 +51,9 @@ namespace PepLib.IO
                 }
             }
 
+            if (Drawing.Info == null)
+                Drawing.Info = DeriveInfoFromLoops();
+
             Drawing.ResolveLoops();
         }
 
@@ -62,7 +69,7 @@ namespace PepLib.IO
 
             try
             {
-                stream = new FileStream(nestFile, FileMode.Open);
+                stream = new FileStream(nestFile, FileMode.Open, FileAccess.Read, FileShare.Read);
                 Read(stream);
             }
             finally
@@ -73,16 +80,23 @@ namespace PepLib.IO
         }
 
         private void LoadInfo(Stream stream)
-        {
-            try
         {
             Drawing.Info = DrawingInfo.Load(stream);
         }
-            catch (Exception exception)
+
+        private DrawingInfo DeriveInfoFromLoops()
         {
-                Debug.WriteLine(exception.Message);
+            var info = new DrawingInfo();
-                Debug.WriteLine(exception.StackTrace);
+
+            if (Drawing.Loops.Count > 0)
+            {
+                // Loop names follow the pattern "{DrawingName}.loop-XXX"
+                var loopName = Drawing.Loops[0].Name;
+                var suffix = loopName.LastIndexOf(".loop-", StringComparison.OrdinalIgnoreCase);
+                info.Name = suffix >= 0 ? loopName.Substring(0, suffix) : loopName;
             }
+
+            return info;
         }
 
         private Loop ReadLoop(string name, Stream stream)

PepLib.Core/Models/Drawing.cs

@@ -76,7 +76,7 @@ namespace PepLib.Models
             return null;
         }
 
-        private string GetLoopName(int loopId)
+        public string GetLoopName(int loopId)
         {
             return string.Format("{0}.loop-{1}", Info.Name, loopId.ToString().PadLeft(3, '0'));
         }

PepLib.Core/PepLib.Core.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="ACadSharp" Version="3.1.32" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.10">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>

PepLib.Core/Utilities/ZipHelper.cs

@@ -18,7 +18,7 @@ namespace PepLib.Utilities
             var nameList = new List<string>();
             var streamList = new List<Stream>();
 
-            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read))
+            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
             using (var zip = new ZipArchive(fileStream, ZipArchiveMode.Read))
             {
                 foreach (var entry in zip.Entries)
@@ -52,7 +52,7 @@ namespace PepLib.Utilities
         /// <returns></returns>
         public static bool ExtractByExtension(string file, string extension, out string name, out Stream stream)
         {
-            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read))
+            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
             using (var zip = new ZipArchive(fileStream, ZipArchiveMode.Read))
             {
                 foreach (var entry in zip.Entries)

PepMcp/PepMcp.csproj

@@ -12,4 +12,10 @@
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Include="appsettings.json">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
 </Project>

PepMcp/PepTools.cs

@@ -10,6 +10,9 @@ public class PepTools
         BaseAddress = new Uri("http://localhost:8085")
     };
 
+    public static string LaserQuoteBaseUrl { get; set; } = "http://localhost:5260";
+    private static readonly HttpClient _laserQuoteClient = new();
+
     private static readonly JsonSerializerOptions _jsonOptions = new()
     {
         PropertyNameCaseInsensitive = true,
@@ -530,7 +533,7 @@ public class PepTools
     {
         try
         {
-            var response = await _httpClient.GetAsync($"/drawings/name/{Uri.EscapeDataString(name)}");
+            var response = await _httpClient.GetAsync($"/drawings/by-name/{Uri.EscapeDataString(name)}");
 
             if (!response.IsSuccessStatusCode)
                 return $"Error: {response.StatusCode} - {await response.Content.ReadAsStringAsync()}";
@@ -571,4 +574,48 @@ public class PepTools
             return $"Error calling PEP API: {ex.Message}";
         }
     }
+
+    [McpServerTool, Description("Compare the geometry of a part between PEP (nesting software) and LaserQuote (quoting software). Returns bounding box dimensions, cut length, entity counts, pixel diff %, and alignment strategy. Use this to detect when part drawings have drifted between systems.")]
+    public static async Task<string> CompareGeometry(
+        [Description("The part number to compare (e.g., 'SULLYS-003')")] string partNumber)
+    {
+        try
+        {
+            var url = $"{LaserQuoteBaseUrl}/api/geometry/compare?partNumber={Uri.EscapeDataString(partNumber)}";
+            var response = await _laserQuoteClient.GetAsync(url);
+            var json = await response.Content.ReadAsStringAsync();
+
+            var result = System.Text.Json.JsonSerializer.Deserialize<GeometryCompareResult>(json, _jsonOptions);
+
+            if (result?.Error != null)
+                return $"Note: {result.Error}";
+
+            var sb = new System.Text.StringBuilder();
+            sb.AppendLine($"Geometry Comparison: {partNumber}");
+            sb.AppendLine($"Result: {(result?.IsMatch == true ? "MATCH ✓" : "MISMATCH ✗")}");
+            sb.AppendLine($"Pixel Diff: {result?.PixelDiffPercent:F3}%");
+            sb.AppendLine($"Alignment: {result?.AlignmentLabel}");
+            sb.AppendLine();
+            sb.AppendLine("| Metric        | LaserQuote      | PEP             |");
+            sb.AppendLine("|---------------|-----------------|-----------------|");
+            sb.AppendLine($"| Width (in)    | {result?.LaserQuote?.Width,15:F4} | {result?.Pep?.Width,15:F4} |");
+            sb.AppendLine($"| Height (in)   | {result?.LaserQuote?.Height,15:F4} | {result?.Pep?.Height,15:F4} |");
+            sb.AppendLine($"| Cut Length    | {result?.LaserQuote?.CutLength,15:F3} | {result?.Pep?.CutLength,15:F3} |");
+            sb.AppendLine($"| Entity Count  | {result?.LaserQuote?.EntityCount,15} | {result?.Pep?.EntityCount,15} |");
+            return sb.ToString();
+        }
+        catch (Exception ex)
+        {
+            return $"Error calling LaserQuote API: {ex.Message}";
+        }
+    }
+
+    private record GeometryMetricDto(double Width, double Height, double CutLength, int EntityCount);
+    private record GeometryCompareResult(
+        bool IsMatch,
+        GeometryMetricDto? LaserQuote,
+        GeometryMetricDto? Pep,
+        double PixelDiffPercent,
+        string? AlignmentLabel,
+        string? Error);
 }

PepMcp/Program.cs

@@ -8,4 +8,7 @@ builder.Services
     .WithTools<PepTools>();
 
 var app = builder.Build();
+
+PepTools.LaserQuoteBaseUrl = builder.Configuration["LaserQuoteBaseUrl"] ?? "http://localhost:5260";
+
 await app.RunAsync();

PepMcp/appsettings.json

@@ -0,0 +1,3 @@
+{
+  "LaserQuoteBaseUrl": "http://localhost:5260"
+}