adding complete db migrations from posgres

Backend/ERPCore.Tests/ERPCore.Tests.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="10.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.20" />
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />

Backend/ERPCore.Tests/NotificationConfigServiceTests.cs

@@ -30,7 +30,7 @@ public class NotificationConfigServiceTests
 
         var result = await service.GetAsync();
 
-        Assert.Equal(7u, result.RowVersion);
+        Assert.Equal(1u, result.RowVersion);
         Assert.Contains(result.Value.Modules, m => m.ModuleKey == "sale.create" && m.EmailEnabled && !m.SmsEnabled && m.InAppEnabled);
         Assert.Contains(result.Value.Modules, m => m.ModuleKey == "grn.confirmed" && !m.EmailEnabled && !m.SmsEnabled && !m.InAppEnabled);
     }
@@ -55,9 +55,9 @@ public class NotificationConfigServiceTests
             }).ToList()
         };
 
-        var updated = await service.UpdateAsync(request, 7);
+        var updated = await service.UpdateAsync(request, 1);
 
-        Assert.Equal(7u, updated.RowVersion);
+        Assert.Equal(2u, updated.RowVersion);
         Assert.Contains(updated.Value.Modules, m => m.ModuleKey == catalog.GetAll()[0].Key && m.EmailEnabled && !m.SmsEnabled && !m.InAppEnabled);
         Assert.Contains(updated.Value.Modules, m => m.ModuleKey == catalog.GetAll()[1].Key && !m.EmailEnabled && m.SmsEnabled && m.InAppEnabled);
 
@@ -133,7 +133,7 @@ public class NotificationConfigServiceTests
             }).ToList()
         };
 
-        var ex = await Assert.ThrowsAsync<DomainException>(() => service.UpdateAsync(request, 7));
+        var ex = await Assert.ThrowsAsync<DomainException>(() => service.UpdateAsync(request, 1));
         Assert.Equal(ErrorCodes.ConcurrencyConflict, ex.Code);
         Assert.Equal(412, ex.StatusCode);
     }

Backend/ERPCore.Tests/ProductionConcurrencyTests.cs

@@ -0,0 +1,124 @@
+using ERPCore.Domain.Entities;
+using ERPCore.Domain.Enums;
+using ERPCore.Dtos.Production;
+using ERPCore.Infra.Auth;
+using ERPCore.Infra.Persistence;
+using ERPCore.Repositories;
+using ERPCore.Services.Production;
+using ERPCore.System.Errors;
+using ERPCore.Tests.TestSupport;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Storage;
+
+namespace ERPCore.Tests;
+
+/// <summary>
+/// Covers the 412 translation on the two production services, which save through
+/// <c>ExecuteInTransactionAsync</c> rather than a bare <c>SaveChangesAsync</c> and so guard
+/// concurrency differently from the inline pattern the other services use.
+/// </summary>
+public class ProductionConcurrencyTests
+{
+    private static readonly InMemoryDatabaseRoot Root = new();
+
+    [Fact]
+    public async Task TemplateUpdateAsync_MapsConcurrencyFailuresToDomainException()
+    {
+        await using var db = CreateContext();
+
+        // Validation runs before the transaction opens, so the referenced item has to exist.
+        db.Items.Add(new Item
+        {
+            ItemId = 1,
+            Sku = "FG-1",
+            Name = "Finished good",
+            CategoryId = 1,
+            BaseUomId = 1,
+            Status = EntityStatus.Active
+        });
+        await db.SaveChangesAsync();
+
+        var service = CreateTemplateService(db);
+
+        var ex = await Assert.ThrowsAsync<DomainException>(
+            () => service.UpdateAsync(1, SingleStageTemplate(), expectedRowVersion: 1));
+
+        Assert.Equal(ErrorCodes.ConcurrencyConflict, ex.Code);
+        Assert.Equal(412, ex.StatusCode);
+    }
+
+    [Fact]
+    public async Task RunUpdateStageQuantitiesAsync_MapsConcurrencyFailuresToDomainException()
+    {
+        await using var db = CreateContext();
+        var service = CreateRunService(db);
+
+        var ex = await Assert.ThrowsAsync<DomainException>(
+            () => service.UpdateStageQuantitiesAsync(1, 1, new UpdateStageQuantitiesRequest()));
+
+        Assert.Equal(ErrorCodes.ConcurrencyConflict, ex.Code);
+        Assert.Equal(412, ex.StatusCode);
+    }
+
+    /// <summary>
+    /// The smallest graph the validator accepts: one stage (both entry and terminal) with a
+    /// stock input and a single item-bearing output, and no edges.
+    /// </summary>
+    private static SaveTemplateRequest SingleStageTemplate() => new()
+    {
+        Code = "TPL-1",
+        Name = "Template 1",
+        Stages =
+        [
+            new SaveStageRequest
+            {
+                Key = "tmp-1",
+                Name = "Mix",
+                Inputs =
+                [
+                    new SaveInputRequest
+                    {
+                        Source = StageInputSource.Stock,
+                        ItemId = 1,
+                        QtyUnit = StageQtyUnit.Pack,
+                        QtyPerBatch = 1m
+                    }
+                ],
+                Outputs =
+                [
+                    new SaveOutputRequest { Key = "tmp-o1", Name = "Output", ItemId = 1, QtyPerBatch = 1m }
+                ]
+            }
+        ]
+    };
+
+    private static ErpDbContext CreateContext()
+    {
+        var options = new DbContextOptionsBuilder<ErpDbContext>()
+            .UseInMemoryDatabase(Guid.NewGuid().ToString("N"), Root)
+            .Options;
+
+        // The real CurrentBranchContext over an unauthenticated user yields IsActive=false,
+        // which leaves the branch query filters off: what a unit test wants.
+        var currentUser = new TestCurrentUser();
+        return new ErpDbContext(options, currentUser, new CurrentBranchContext(currentUser));
+    }
+
+    private static ProductionTemplateService CreateTemplateService(ErpDbContext db)
+        => new(
+            new Repository<ProductionTemplate>(db), new Repository<TemplateStage>(db),
+            new Repository<StageInput>(db), new Repository<StageOutput>(db),
+            new Repository<StageEdge>(db), new Repository<Item>(db),
+            new Repository<Uom>(db), new Repository<ProductionRun>(db),
+            new ThrowingTransactionUnitOfWork(), new TestCurrentUser());
+
+    // The costing, measurement and numbering collaborators are only ever touched inside the
+    // transaction lambda, which ThrowingTransactionUnitOfWork never invokes.
+    private static ProductionRunService CreateRunService(ErpDbContext db)
+        => new(
+            new Repository<ProductionRun>(db), new Repository<ProductionTemplate>(db),
+            new Repository<Warehouse>(db), new Repository<Bin>(db),
+            new Repository<Item>(db), new Repository<ReasonCode>(db),
+            fifo: null!, measure: null!, numbers: null!,
+            new ThrowingTransactionUnitOfWork(), new TestCurrentUser());
+}

Backend/ERPCore.Tests/TestSupport/NotificationConfigTestSupport.cs

@@ -11,6 +11,12 @@ internal sealed class TestCurrentUser : ICurrentUser
     public string UserId => "system";
     public int AuditUserId => User.SystemUserId;
     public bool IsAuthenticated => false;
+
+    // Unauthenticated, so no role claim and no branch scoping: the three members the
+    // AuthHex integration added to ICurrentUser.
+    public string? RoleCode => null;
+    public bool IsAdmin => false;
+    public int? BranchId => null;
 }
 
 internal sealed class ThrowingUnitOfWork : ERPCore.Infra.UoW.IUnitOfWork
@@ -25,6 +31,25 @@ internal sealed class ThrowingUnitOfWork : ERPCore.Infra.UoW.IUnitOfWork
         => throw new NotSupportedException();
 }
 
+/// <summary>
+/// Fails the transactional path the way a lost optimistic-concurrency race does, so the
+/// services that save through <c>ExecuteInTransactionAsync</c> can be covered too. The
+/// lambda is never invoked, which is the point: the real <c>UnitOfWork</c> issues its own
+/// <c>SaveChangesAsync</c> after the lambda returns, so the catch under test has to sit
+/// outside it.
+/// </summary>
+internal sealed class ThrowingTransactionUnitOfWork : ERPCore.Infra.UoW.IUnitOfWork
+{
+    public Task<int> SaveChangesAsync(CancellationToken ct = default)
+        => throw new DbUpdateConcurrencyException("Test concurrency conflict.");
+
+    public Task ExecuteInTransactionAsync(Func<CancellationToken, Task> action, CancellationToken ct = default)
+        => throw new DbUpdateConcurrencyException("Test concurrency conflict.");
+
+    public Task<T> ExecuteInTransactionAsync<T>(Func<CancellationToken, Task<T>> action, CancellationToken ct = default)
+        => throw new DbUpdateConcurrencyException("Test concurrency conflict.");
+}
+
 internal static class NotificationConfigTestSupport
 {
     private static readonly InMemoryDatabaseRoot Root = new();
@@ -35,7 +60,10 @@ internal static class NotificationConfigTestSupport
             .UseInMemoryDatabase(name, Root)
             .Options;
 
-        return new ErpDbContext(options, new TestCurrentUser());
+        // The real CurrentBranchContext over an unauthenticated user yields IsActive=false,
+        // which leaves the branch query filters off: what a unit test wants.
+        var currentUser = new TestCurrentUser();
+        return new ErpDbContext(options, currentUser, new CurrentBranchContext(currentUser));
     }
 
     public static async Task SeedAsync(ErpDbContext db, IEnumerable<NotificationConfigModule>? modules = null)
@@ -52,7 +80,8 @@ internal static class NotificationConfigTestSupport
             NotificationConfigId = NotificationConfig.SingletonId,
             UpdatedBy = User.SystemUserId,
             UpdatedAt = DateTime.UtcNow,
-            RowVersion = 7,
+            // No RowVersion here on purpose: ErpDbContext.BumpRowVersions stamps every
+            // inserted row with 1, so any seeded value is overwritten on save.
         };
 
         if (modules is not null)