diff --git a/backend/FwLite/FwLiteProjectSync/Program.cs b/backend/FwLite/FwLiteProjectSync/Program.cs
index bc516bdaf..4c009a12e 100644
--- a/backend/FwLite/FwLiteProjectSync/Program.cs
+++ b/backend/FwLite/FwLiteProjectSync/Program.cs
@@ -1,99 +1,105 @@
 using System.CommandLine;
 using FwDataMiniLcmBridge;
-using FwLiteProjectSync;
 using LcmCrdt;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using MiniLcm;
 
+namespace FwLiteProjectSync;
 
-var rootCommand = new RootCommand("CRDT to FwData sync tool");
-var crdtOption = new Option<string>("--crdt", "CRDT sqlite file") { IsRequired = true };
-rootCommand.AddGlobalOption(crdtOption);
-var fwDataOption = new Option<string>("--fwdata", "FwData file") { IsRequired = true };
-rootCommand.AddGlobalOption(fwDataOption);
-var beforeSyncCommand = new Command("before-sync", "Run before sync");
-beforeSyncCommand.SetHandler((crdtFile, fwDataFile) =>
-    {
-        Console.WriteLine($"crdtFile: {crdtFile}");
-        Console.WriteLine($"fwDataFile: {fwDataFile}");
-    },
-    crdtOption,
-    fwDataOption);
-rootCommand.Add(beforeSyncCommand);
-var afterSyncCommand = new Command("after-sync", "Run after sync");
-afterSyncCommand.SetHandler((crdtFile, fwDataFile) =>
-    {
-        Console.WriteLine($"crdtFile: {crdtFile}");
-        Console.WriteLine($"fwDataFile: {fwDataFile}");
-    },
-    crdtOption,
-    fwDataOption);
-rootCommand.Add(afterSyncCommand);
-var syncCommand = new Command("sync", "Synchronize CRDT with FwData");
-var createCrdtDirOption = new Option<bool>("--create-crdt-dir", "Create CRDT directory");
-var dryRunOption = new Option<bool>("--dry-run", () => false, "Dry run");
-syncCommand.Add(createCrdtDirOption);
-syncCommand.Add(dryRunOption);
-syncCommand.SetHandler(async (crdtFile, fwDataFile, createCrdtDir, dryRun) =>
+public class Program
+{
+    public static Task<int> Main(string[] args)
     {
-        Console.WriteLine($"crdtFile: {crdtFile}");
-        Console.WriteLine($"fwDataFile: {fwDataFile}");
-        var fwProjectName = Path.GetFileNameWithoutExtension(fwDataFile);
-        var crdtProjectName = Path.GetFileNameWithoutExtension(crdtFile);
+        var rootCommand = new RootCommand("CRDT to FwData sync tool");
+        var crdtOption = new Option<string>("--crdt", "CRDT sqlite file") { IsRequired = true };
+        rootCommand.AddGlobalOption(crdtOption);
+        var fwDataOption = new Option<string>("--fwdata", "FwData file") { IsRequired = true };
+        rootCommand.AddGlobalOption(fwDataOption);
+        var beforeSyncCommand = new Command("before-sync", "Run before sync");
+        beforeSyncCommand.SetHandler((crdtFile, fwDataFile) =>
+            {
+                Console.WriteLine($"crdtFile: {crdtFile}");
+                Console.WriteLine($"fwDataFile: {fwDataFile}");
+            },
+            crdtOption,
+            fwDataOption);
+        rootCommand.Add(beforeSyncCommand);
+        var afterSyncCommand = new Command("after-sync", "Run after sync");
+        afterSyncCommand.SetHandler((crdtFile, fwDataFile) =>
+            {
+                Console.WriteLine($"crdtFile: {crdtFile}");
+                Console.WriteLine($"fwDataFile: {fwDataFile}");
+            },
+            crdtOption,
+            fwDataOption);
+        rootCommand.Add(afterSyncCommand);
+        var syncCommand = new Command("sync", "Synchronize CRDT with FwData");
+        var createCrdtDirOption = new Option<bool>("--create-crdt-dir", "Create CRDT directory");
+        var dryRunOption = new Option<bool>("--dry-run", () => false, "Dry run");
+        syncCommand.Add(createCrdtDirOption);
+        syncCommand.Add(dryRunOption);
+        syncCommand.SetHandler(async (crdtFile, fwDataFile, createCrdtDir, dryRun) =>
+            {
+                Console.WriteLine($"crdtFile: {crdtFile}");
+                Console.WriteLine($"fwDataFile: {fwDataFile}");
+                var fwProjectName = Path.GetFileNameWithoutExtension(fwDataFile);
+                var crdtProjectName = Path.GetFileNameWithoutExtension(crdtFile);
 
-        await using var serviceRoot = SyncServices(crdtFile, fwDataFile, createCrdtDir);
-        await using var scope = serviceRoot.CreateAsyncScope();
-        var services = scope.ServiceProvider;
-        var logger = services.GetRequiredService<ILogger<Program>>();
-        var fwdataApi = services.GetRequiredService<FwDataFactory>().GetFwDataMiniLcmApi(fwProjectName, true);
-        var projectsService = services.GetRequiredService<ProjectsService>();
-        var crdtProject = projectsService.GetProject(crdtProjectName);
-        if (crdtProject is null)
-        {
-            crdtProject = await projectsService.CreateProject(new(crdtProjectName, fwdataApi.ProjectId, SeedNewProjectData: false));
-        }
-        projectsService.SetProjectScope(crdtProject);
-        await services.GetRequiredService<CurrentProjectService>().PopulateProjectDataCache();
-        var syncService = services.GetRequiredService<CrdtFwdataProjectSyncService>();
+                await using var serviceRoot = SyncServices(crdtFile, fwDataFile, createCrdtDir);
+                await using var scope = serviceRoot.CreateAsyncScope();
+                var services = scope.ServiceProvider;
+                var logger = services.GetRequiredService<ILogger<Program>>();
+                var fwdataApi = services.GetRequiredService<FwDataFactory>().GetFwDataMiniLcmApi(fwProjectName, true);
+                var projectsService = services.GetRequiredService<ProjectsService>();
+                var crdtProject = projectsService.GetProject(crdtProjectName);
+                if (crdtProject is null)
+                {
+                    crdtProject = await projectsService.CreateProject(new(crdtProjectName, fwdataApi.ProjectId, SeedNewProjectData: false));
+                }
+                projectsService.SetProjectScope(crdtProject);
+                await services.GetRequiredService<CurrentProjectService>().PopulateProjectDataCache();
+                var syncService = services.GetRequiredService<CrdtFwdataProjectSyncService>();
 
-        var result = await syncService.Sync(services.GetRequiredService<IMiniLcmApi>(), fwdataApi, dryRun);
-        logger.LogInformation("Sync result, CrdtChanges: {CrdtChanges}, FwdataChanges: {FwdataChanges}", result.CrdtChanges, result.FwdataChanges);
-    },
-    crdtOption,
-    fwDataOption,
-    createCrdtDirOption,
-    dryRunOption);
-rootCommand.Add(syncCommand);
-await rootCommand.InvokeAsync(args);
+                var result = await syncService.Sync(services.GetRequiredService<IMiniLcmApi>(), fwdataApi, dryRun);
+                logger.LogInformation("Sync result, CrdtChanges: {CrdtChanges}, FwdataChanges: {FwdataChanges}", result.CrdtChanges, result.FwdataChanges);
+            },
+            crdtOption,
+            fwDataOption,
+            createCrdtDirOption,
+            dryRunOption);
+        rootCommand.Add(syncCommand);
+        return rootCommand.InvokeAsync(args);
 
-static ServiceProvider SyncServices(string crdtFile, string fwDataFile, bool createCrdtDir)
-{
-    if (!File.Exists(fwDataFile)) throw new InvalidOperationException("Could not find fwdata file " + fwDataFile);
+        static ServiceProvider SyncServices(string crdtFile, string fwDataFile, bool createCrdtDir)
+        {
+            if (!File.Exists(fwDataFile)) throw new InvalidOperationException("Could not find fwdata file " + fwDataFile);
 
-    var fwDataProjectsFolder = Directory.GetParent(fwDataFile)?.Parent;
-    if (fwDataProjectsFolder is null) throw new InvalidOperationException("Could not find parent folder of fwdata dir " + fwDataFile);
-    var crdtFolder = Directory.GetParent(crdtFile);
-    if (crdtFolder is null) throw new InvalidOperationException("Could not find parent folder of crdt file " + crdtFile);
-    if (!crdtFolder.Exists && createCrdtDir)
-    {
-        crdtFolder.Create();
-    } else if (!crdtFolder.Exists)
-    {
-        throw new InvalidOperationException("Could not find crdt folder " + crdtFolder);
-    }
+            var fwDataProjectsFolder = Directory.GetParent(fwDataFile)?.Parent;
+            if (fwDataProjectsFolder is null) throw new InvalidOperationException("Could not find parent folder of fwdata dir " + fwDataFile);
+            var crdtFolder = Directory.GetParent(crdtFile);
+            if (crdtFolder is null) throw new InvalidOperationException("Could not find parent folder of crdt file " + crdtFile);
+            if (!crdtFolder.Exists && createCrdtDir)
+            {
+                crdtFolder.Create();
+            } else if (!crdtFolder.Exists)
+            {
+                throw new InvalidOperationException("Could not find crdt folder " + crdtFolder);
+            }
 
-    var crdtServices = new ServiceCollection()
-        .AddLcmCrdtClient()
-        .AddFwDataBridge()
-        .AddFwLiteProjectSync()
-        .Configure<FwDataBridgeConfig>(c => c.ProjectsFolder = fwDataProjectsFolder.FullName)
-        .Configure<LcmCrdtConfig>(c => c.ProjectPath = crdtFolder.FullName)
-        .AddLogging(builder => builder.AddConsole().AddDebug().AddConfiguration(new ConfigurationManager().AddInMemoryCollection(new Dictionary<string, string?>
-        {
-            ["Logging:LogLevel:Microsoft.EntityFrameworkCore"] = "Warning"
-        }).Build()))
-        .BuildServiceProvider(true);
-    return crdtServices;
+            var crdtServices = new ServiceCollection()
+                .AddLcmCrdtClient()
+                .AddFwDataBridge()
+                .AddFwLiteProjectSync()
+                .Configure<FwDataBridgeConfig>(c => c.ProjectsFolder = fwDataProjectsFolder.FullName)
+                .Configure<LcmCrdtConfig>(c => c.ProjectPath = crdtFolder.FullName)
+                .AddLogging(builder => builder.AddConsole().AddDebug().AddConfiguration(new ConfigurationManager().AddInMemoryCollection(new Dictionary<string, string?>
+                {
+                    ["Logging:LogLevel:Microsoft.EntityFrameworkCore"] = "Warning"
+                }).Build()))
+                .BuildServiceProvider(true);
+            return crdtServices;
+        }
+    }
 }