fix(uplifts): resolve work-order uplifts through owned dispatches (SH-393)

Board create left the new primary dispatch with no WorkOrderId, so uplifts
created on those work orders were written to a dispatch the work order's
uplift reads never resolve: not listed, allowance never consumed, queue WO
number blank. The same orphan made ApptDate/vendor patches fail with
"A primary dispatch is required".

- Board create backfills Dispatch.WorkOrderId after the first save.
- Uplift create resolves its dispatch through the read-side scope
  (non-deleted, owned or linked); otherwise the stable
  "no primary dispatch" error.
- Data-only migration assigns existing orphaned primaries to the single
  work order naming them primary; idempotent.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Data.SeaHavenIndustries/Migrations/20260925001752_SH393_BackfillBoardCreatedDispatchWorkOrder.cs

@@ -0,0 +1,43 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Data.SeaHavenIndustries.Migrations
+{
+    /// <summary>
+    /// SH-393: board-created work orders with a vendor stored their primary dispatch with
+    /// no WorkOrderId and no DispatchWorkOrders link, so every owned-or-linked read (uplift
+    /// list, allowance, approval queue WO number, dispatch patches) missed it. Data-only
+    /// heal: assign the dispatch to the single work order that names it as primary. Rows
+    /// already owned or linked, and dispatches named primary by more than one work order,
+    /// are left untouched, so re-running is a no-op.
+    /// </summary>
+    public partial class SH393_BackfillBoardCreatedDispatchWorkOrder : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql(
+                """
+                UPDATE d
+                SET d.[WorkOrderId] = w.[Id]
+                FROM [Dispatches] AS d
+                INNER JOIN [workOrders] AS w ON w.[PrimaryDispatchId] = d.[Id]
+                WHERE d.[WorkOrderId] IS NULL
+                  AND NOT EXISTS (
+                      SELECT 1 FROM [DispatchWorkOrders] AS l
+                      WHERE l.[DispatchId] = d.[Id])
+                  AND (
+                      SELECT COUNT(*) FROM [workOrders] AS owner
+                      WHERE owner.[PrimaryDispatchId] = d.[Id]) = 1;
+                """);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            // The heal is not reversible: healed rows are indistinguishable from dispatches
+            // that were created with their work order set.
+        }
+    }
+}

SeaHaven.DataServices/Implementation/UpliftDataService.cs

@@ -336,6 +336,25 @@ namespace SeaHaven.DataServices.Implementation
                 .AnyAsync(u => u.Status == "Pending" || u.Status == "ChangesRequested", cancellationToken);
         }
 
+        public async Task<Dispatch?> GetUpliftDispatchForWorkOrderAsync(
+            int workOrderId,
+            int? primaryDispatchId,
+            CancellationToken cancellationToken)
+        {
+            var candidates = await _context.Dispatches
+                .Where(d =>
+                    (d.IsDeleted == null || d.IsDeleted == false)
+                    && (
+                        d.WorkOrderId == workOrderId
+                        || d.DispatchWorkOrders!.Any(link => link.WorkOrderId == workOrderId)))
+                .OrderByDescending(d => d.DispatchedAt ?? d.CreatedDate)
+                .ThenByDescending(d => d.Id)
+                .ToListAsync(cancellationToken);
+
+            return candidates.FirstOrDefault(d => d.Id == primaryDispatchId)
+                ?? candidates.FirstOrDefault();
+        }
+
         public Task<decimal> SumAutoApprovedAmountForWorkOrderAsync(int workOrderId, CancellationToken cancellationToken)
         {
             return ForWorkOrder(workOrderId)

SeaHaven.DataServices/Interfaces/IUpliftDataService.cs

@@ -19,6 +19,10 @@ namespace SeaHaven.DataServices.Interfaces
         Task<UpliftEvidenceDownloadData?> GetEvidenceForInternalDownloadAsync(int upliftRequestId, CancellationToken cancellationToken);
         Task<bool> HasPendingAsync(int dispatchId, CancellationToken cancellationToken);
         Task<bool> HasPendingForWorkOrderAsync(int workOrderId, CancellationToken cancellationToken);
+        // SH-393: the tracked dispatch a work-order uplift is written to, resolved through the
+        // same scope the work-order uplift reads use (non-deleted, owned or linked): the
+        // work order's primary dispatch when it qualifies, otherwise its latest qualifying one.
+        Task<Dispatch?> GetUpliftDispatchForWorkOrderAsync(int workOrderId, int? primaryDispatchId, CancellationToken cancellationToken);
         Task<decimal> SumAutoApprovedAmountForWorkOrderAsync(int workOrderId, CancellationToken cancellationToken);
         // Approval queue read contract: set-based per-work-order exposure totals covering
         // auto-approved and admin-approved uplift amounts (pending, rejected,

SeaHaven.Services/Implementation/WorkOrderBoardCreateService.cs

@@ -249,10 +249,14 @@ namespace SeaHaven.Services.Implementation
                 _mutationData.TrackNewWorkOrder(workOrder);
                 var firstOutcome = await _mutationData.SaveAsync(ct);
 
-                if (dispatch != null && workOrder.PrimaryDispatchId == null)
+                // SH-393: the first save already fixes up PrimaryDispatchId from the
+                // PrimaryDispatch navigation, so the dispatch's own WorkOrderId must be
+                // backfilled independently. Without it the dispatch belongs to no work order
+                // and every owned-or-linked read (uplifts, dispatch patches) misses it.
+                if (dispatch != null)
                 {
-                    workOrder.PrimaryDispatchId = dispatch.Id;
+                    workOrder.PrimaryDispatchId ??= dispatch.Id;
-                    dispatch.WorkOrderId = workOrder.Id;
+                    dispatch.WorkOrderId ??= workOrder.Id;
                 }
 
 

SeaHaven.Services/Implementation/WorkOrderUpliftService.cs

@@ -104,24 +104,16 @@ namespace SeaHaven.Services.Implementation
                     $"Cannot create an uplift on a '{workOrder.LifecycleStatus}' work order");
             }
 
-            Dispatch? dispatch;
+            // SH-393: write to a dispatch the work order's uplift reads resolve back to it.
-            if (workOrder.PrimaryDispatchId is int primaryDispatchId)
+            // Loading the primary by id alone accepted soft-deleted, unlinked, or other work
-            {
+            // orders' dispatches, so the request never showed on this work order and never
-                dispatch = await _dispatchData.GetByIdAsync(primaryDispatchId);
+            // consumed its allowance.
-                if (dispatch == null)
+            var dispatch = await _upliftData.GetUpliftDispatchForWorkOrderAsync(
-                    throw new KeyNotFoundException("Dispatch not found");
+                workOrderId,
-            }
+                workOrder.PrimaryDispatchId,
-            else
+                cancellationToken);
-            {
+            if (dispatch == null)
-                dispatch = (await _dispatchData.GetByWorkOrderIdAsync(workOrderId, cancellationToken))
+                throw new InvalidOperationException("Work order has no primary dispatch for uplift requests");
-                    .Where(candidate => candidate.IsDeleted != true)
-                    .OrderByDescending(candidate => candidate.DispatchedAt ?? candidate.CreatedDate)
-                    .ThenByDescending(candidate => candidate.Id)
-                    .FirstOrDefault();
-
-                if (dispatch == null)
-                    throw new InvalidOperationException("Work order has no primary dispatch for uplift requests");
-            }
 
             if (IsTerminalForUplift(dispatch.Status))
                 throw new InvalidOperationException($"Cannot request uplift on a '{dispatch.Status}' dispatch");

SeaHavenIndustries.Tests/WorkOrderBoardCancelServiceTests.cs

@@ -442,6 +442,7 @@ public class WorkOrderBoardCancelServiceTests
         public Task<UpliftEvidenceDownloadData?> GetEvidenceForInternalDownloadAsync(int upliftRequestId, CancellationToken cancellationToken) => throw new NotSupportedException();
         public Task<bool> HasPendingAsync(int dispatchId, CancellationToken cancellationToken) => throw new NotSupportedException();
         public Task<bool> HasPendingForWorkOrderAsync(int workOrderId, CancellationToken cancellationToken) => throw new NotSupportedException();
+        public Task<Dispatch?> GetUpliftDispatchForWorkOrderAsync(int workOrderId, int? primaryDispatchId, CancellationToken cancellationToken) => throw new NotSupportedException();
         public Task<decimal> SumAutoApprovedAmountForWorkOrderAsync(int workOrderId, CancellationToken cancellationToken) => throw new NotSupportedException();
         public Task<IReadOnlyList<WorkOrderUpliftExposureData>> GetApprovedExposureForWorkOrdersAsync(IReadOnlyCollection<int> workOrderIds, CancellationToken cancellationToken) => throw new NotSupportedException();
         public Task<decimal> GetPendingExposureTotalAsync(CancellationToken cancellationToken) => throw new NotSupportedException();

SeaHavenIndustries.Tests/WorkOrderUpliftDispatchOwnershipTests.cs

@@ -0,0 +1,344 @@
+using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries.Enums;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+using SeaHaven.DataServices.Implementation;
+using SeaHaven.Services.Configuration;
+using SeaHaven.Services.DTOs;
+using SeaHaven.Services.Exceptions;
+using SeaHaven.Services.Helpers;
+using SeaHaven.Services.Implementation;
+using SeaHaven.Services.Validation;
+using Xunit;
+
+namespace SeaHavenIndustries.Tests;
+
+/// <summary>
+/// SH-393: an uplift created from a work order must land on a dispatch the work order's
+/// uplift reads resolve back to it (non-deleted, owned or linked), so the request is
+/// listed on that work order, consumes its allowance and carries its WO number in the
+/// approval queue.
+/// </summary>
+public sealed class WorkOrderUpliftDispatchOwnershipTests
+{
+    private const string NoPrimaryDispatchMessage = "Work order has no primary dispatch for uplift requests";
+
+    private static ApplicationDbContext CreateContext()
+    {
+        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
+            .UseInMemoryDatabase(Guid.NewGuid().ToString())
+            .Options;
+        var context = new ApplicationDbContext(options);
+        WorkOrderAccountTestHelpers.SeedBoardCreateScope(context);
+        context.Vendors.Add(new Vendor { Id = 5, CompanyName = "Acme HVAC" });
+        context.SaveChanges();
+        return context;
+    }
+
+    private static WorkOrderBoardCreateService NewBoardCreateService(ApplicationDbContext context)
+    {
+        var boardData = new WorkOrderBoardDataService(context);
+        var resolver = WorkOrderAccountTestHelpers.Resolver(context);
+        var fieldLocks = new WorkOrderFieldLockService(new WorkOrderFieldLockDataService(context));
+        return new WorkOrderBoardCreateService(
+            boardData,
+            new WorkOrderBoardMutationDataService(context),
+            new WorkOrderBoardService(boardData, resolver),
+            new WorkOrderAuditService(new WorkOrderAuditDataService(context), fieldLocks),
+            new WorkOrderBoardCreateValidation(),
+            resolver,
+            new WorkOrderPocDataService(context));
+    }
+
+    private static WorkOrderBoardUpdateService NewBoardUpdateService(ApplicationDbContext context)
+    {
+        var fieldLocks = new WorkOrderFieldLockService(new WorkOrderFieldLockDataService(context));
+        return new WorkOrderBoardUpdateService(
+            new WorkOrderBoardDataService(context),
+            new WorkOrderBoardMutationDataService(context),
+            new WorkOrderAuditService(new WorkOrderAuditDataService(context), fieldLocks));
+    }
+
+    private static WorkOrderUpliftService NewUpliftService(ApplicationDbContext context)
+    {
+        return new WorkOrderUpliftService(
+            new UpliftDataService(context),
+            new DispatchDataService(context),
+            new WorkOrderDetailDataService(context),
+            WorkOrderAccountTestHelpers.Resolver(context),
+            new UserDataService(context),
+            TimeProvider.System,
+            Options.Create(new ApprovalsOptions
+            {
+                UpliftTier1MaxUsd = 2500m,
+                Tier1Roles = new[] { "Approver" },
+                Tier2Roles = new[] { "Manager" },
+            }));
+    }
+
+    private static Task<WorkOrderBoardRowDto> BoardCreateWithVendorAsync(
+        ApplicationDbContext context,
+        bool? isAddOn = null)
+    {
+        return NewBoardCreateService(context).CreateAsync(new WorkOrderBoardCreateRequestDto
+        {
+            WorkOrderType = WorkOrderType.PM,
+            SiteCode = "BK5",
+            LocationId = 1,
+            VendorId = 5,
+            IsAddOn = isAddOn,
+        }, WorkOrderAccountTestHelpers.AccountUser(), "actor-1");
+    }
+
+    private static Task<WorkOrderUpliftDto?> CreateUpliftAsync(
+        ApplicationDbContext context,
+        int workOrderId,
+        decimal amount,
+        int accountId = 1)
+    {
+        return NewUpliftService(context).CreateAsync(
+            workOrderId,
+            new CreateWorkOrderUpliftRequestDto { Amount = amount, Notes = "Extra coil work" },
+            WorkOrderAccountTestHelpers.AccountUser(accountId: accountId),
+            CancellationToken.None);
+    }
+
+    private static async Task<(int WorkOrderId, int PrimaryDispatchId)> SeedWorkOrderAsync(
+        ApplicationDbContext context,
+        Dispatch primary,
+        params Dispatch[] others)
+    {
+        context.Dispatches.Add(primary);
+        context.Dispatches.AddRange(others);
+        context.workOrders.Add(new WorkOrder
+        {
+            Id = 1,
+            InternalWONumber = "SH00001",
+            AccountId = 1,
+            WorkOrderType = WorkOrderType.PM,
+            PrimaryDispatchId = primary.Id,
+        });
+        await context.SaveChangesAsync();
+        return (1, primary.Id);
+    }
+
+    [Fact]
+    public async Task BoardCreate_WithVendor_PrimaryDispatchBelongsToWorkOrder()
+    {
+        await using var context = CreateContext();
+
+        var row = await BoardCreateWithVendorAsync(context);
+
+        var dispatch = await context.Dispatches.SingleAsync(d => d.Id == row.PrimaryDispatchId);
+        Assert.Equal(row.Id, dispatch.WorkOrderId);
+    }
+
+    [Fact]
+    public async Task BoardCreatedWorkOrder_PatchApptDate_KeepsPrimaryDispatch()
+    {
+        await using var context = CreateContext();
+        var row = await BoardCreateWithVendorAsync(context);
+        var workOrder = await context.workOrders.SingleAsync(w => w.Id == row.Id);
+        var dispatch = await context.Dispatches.SingleAsync(d => d.Id == row.PrimaryDispatchId);
+        workOrder.RowVersion = new byte[] { 1, 0, 0, 0, 0, 0, 0, 1 };
+        dispatch.RowVersion = new byte[] { 1, 0, 0, 0, 0, 0, 0, 2 };
+        await context.SaveChangesAsync();
+
+        var patched = await NewBoardUpdateService(context).PatchFieldAsync(row.Id, new WorkOrderBoardPatchRequestDto
+        {
+            Field = WorkOrderBoardFieldNames.ApptDate,
+            Value = "2026-10-05",
+            WorkOrderVersion = Convert.ToBase64String(workOrder.RowVersion),
+            DispatchVersion = Convert.ToBase64String(dispatch.RowVersion),
+        }, "actor-1");
+
+        Assert.Equal(row.PrimaryDispatchId, patched.PrimaryDispatchId);
+        Assert.Equal(1, await context.Dispatches.CountAsync());
+    }
+
+    [Fact]
+    public async Task BoardCreatedWorkOrder_AutoApprovedUplift_IsListedAndConsumesAllowance()
+    {
+        await using var context = CreateContext();
+        var row = await BoardCreateWithVendorAsync(context);
+
+        var created = await CreateUpliftAsync(context, row.Id, 400m);
+
+        Assert.Equal("auto_approved", created!.Status);
+        var listed = await NewUpliftService(context).ListAsync(
+            row.Id,
+            WorkOrderAccountTestHelpers.AccountUser(),
+            CancellationToken.None);
+        var uplift = Assert.Single(listed!);
+        Assert.Equal(created.Id, uplift.Id);
+        Assert.Equal(400m, await new UpliftDataService(context)
+            .SumAutoApprovedAmountForWorkOrderAsync(row.Id, CancellationToken.None));
+    }
+
+    [Fact]
+    public async Task BoardCreatedWorkOrder_RequestBeyondRemainingAllowance_GoesToPendingWithWorkOrderNumber()
+    {
+        await using var context = CreateContext();
+        var row = await BoardCreateWithVendorAsync(context);
+        await CreateUpliftAsync(context, row.Id, 400m);
+
+        var second = await CreateUpliftAsync(context, row.Id, 200m);
+
+        Assert.Equal("pending", second!.Status);
+        var (_, queue) = await new UpliftDataService(context)
+            .GetPagedAsync("Pending", null, 1, 25, CancellationToken.None);
+        var queued = Assert.Single(queue);
+        Assert.Equal(second.Id, queued.Id);
+        Assert.Equal(row.Id, queued.WorkOrderId);
+        Assert.Equal(row.WoNumber, queued.WorkOrderNumber);
+    }
+
+    [Fact]
+    public async Task BoardCreatedWorkOrder_OwnerRevokesAutoApprovedUplift()
+    {
+        await using var context = CreateContext();
+        var row = await BoardCreateWithVendorAsync(context);
+        var created = await CreateUpliftAsync(context, row.Id, 1m);
+
+        var revoked = await NewUpliftService(context).RevokeAsync(
+            row.Id,
+            created!.Id,
+            new RevokeWorkOrderUpliftRequestDto(),
+            WorkOrderAccountTestHelpers.AccountUser(),
+            CancellationToken.None);
+
+        Assert.Equal("revoked", revoked!.Status);
+        Assert.Equal(0m, await new UpliftDataService(context)
+            .SumAutoApprovedAmountForWorkOrderAsync(row.Id, CancellationToken.None));
+    }
+
+    [Fact]
+    public async Task ExAddOnWorkOrder_AfterScheduleClearsAddOn_UpliftIsListedOnWorkOrder()
+    {
+        await using var context = CreateContext();
+        var row = await BoardCreateWithVendorAsync(context, isAddOn: true);
+        Assert.True(row.IsAddOn);
+        var workOrder = await context.workOrders.SingleAsync(w => w.Id == row.Id);
+        workOrder.RowVersion = new byte[] { 1, 0, 0, 0, 0, 0, 0, 1 };
+        await context.SaveChangesAsync();
+        var rescheduled = await NewBoardUpdateService(context).PatchFieldAsync(row.Id, new WorkOrderBoardPatchRequestDto
+        {
+            Field = WorkOrderBoardFieldNames.ScheduledDate,
+            Value = DateTime.UtcNow.Date.AddDays(60).ToString("yyyy-MM-dd"),
+            WorkOrderVersion = Convert.ToBase64String(workOrder.RowVersion),
+        }, "actor-1");
+        Assert.False(rescheduled.IsAddOn);
+
+        var created = await CreateUpliftAsync(context, row.Id, 1m);
+
+        var listed = await NewUpliftService(context).ListAsync(
+            row.Id,
+            WorkOrderAccountTestHelpers.AccountUser(),
+            CancellationToken.None);
+        Assert.Equal(created!.Id, Assert.Single(listed!).Id);
+    }
+
+    [Fact]
+    public async Task Create_SoftDeletedPrimaryDispatch_UsesOwnedLiveDispatch()
+    {
+        await using var context = CreateContext();
+        var (workOrderId, _) = await SeedWorkOrderAsync(
+            context,
+            new Dispatch { Id = 10, VendorId = 5, WorkOrderId = 1, NTEAmount = 1000m, IsDeleted = true },
+            new Dispatch { Id = 11, VendorId = 5, WorkOrderId = 1, NTEAmount = 800m });
+
+        var created = await CreateUpliftAsync(context, workOrderId, 100m);
+
+        var request = await context.DispatchUpliftRequests.SingleAsync(u => u.Id == created!.Id);
+        Assert.Equal(11, request.DispatchId);
+        Assert.Equal(1000m, (await context.Dispatches.SingleAsync(d => d.Id == 10)).NTEAmount);
+        Assert.Equal(900m, (await context.Dispatches.SingleAsync(d => d.Id == 11)).NTEAmount);
+    }
+
+    [Fact]
+    public async Task Create_OnlySoftDeletedPrimaryDispatch_IsRejectedWithoutPersisting()
+    {
+        await using var context = CreateContext();
+        var (workOrderId, _) = await SeedWorkOrderAsync(
+            context,
+            new Dispatch { Id = 10, VendorId = 5, WorkOrderId = 1, NTEAmount = 1000m, IsDeleted = true });
+
+        var error = await Assert.ThrowsAsync<InvalidOperationException>(
+            () => CreateUpliftAsync(context, workOrderId, 100m));
+
+        Assert.Equal(NoPrimaryDispatchMessage, error.Message);
+        Assert.Empty(context.DispatchUpliftRequests);
+        Assert.Empty(context.WorkOrderAuditLogs);
+    }
+
+    [Fact]
+    public async Task Create_PrimaryDispatchOwnedByAnotherWorkOrder_IsNotUsed()
+    {
+        await using var context = CreateContext();
+        context.workOrders.Add(new WorkOrder { Id = 2, InternalWONumber = "SH00002", AccountId = 1 });
+        var (workOrderId, _) = await SeedWorkOrderAsync(
+            context,
+            new Dispatch { Id = 10, VendorId = 5, WorkOrderId = 2, NTEAmount = 1000m });
+
+        var error = await Assert.ThrowsAsync<InvalidOperationException>(
+            () => CreateUpliftAsync(context, workOrderId, 100m));
+
+        Assert.Equal(NoPrimaryDispatchMessage, error.Message);
+        Assert.Empty(context.DispatchUpliftRequests);
+        Assert.Equal(1000m, (await context.Dispatches.SingleAsync(d => d.Id == 10)).NTEAmount);
+    }
+
+    [Fact]
+    public async Task Create_UnlinkedPrimaryDispatch_IsRejectedInsteadOfHidingTheUplift()
+    {
+        await using var context = CreateContext();
+        var (workOrderId, _) = await SeedWorkOrderAsync(
+            context,
+            new Dispatch { Id = 10, VendorId = 5, WorkOrderId = null, NTEAmount = 1000m });
+
+        var error = await Assert.ThrowsAsync<InvalidOperationException>(
+            () => CreateUpliftAsync(context, workOrderId, 100m));
+
+        Assert.Equal(NoPrimaryDispatchMessage, error.Message);
+        Assert.Empty(context.DispatchUpliftRequests);
+    }
+
+    [Fact]
+    public async Task Create_PrimaryDispatchLinkedThroughDispatchWorkOrders_IsUsed()
+    {
+        await using var context = CreateContext();
+        context.workOrders.Add(new WorkOrder { Id = 2, InternalWONumber = "SH00002", AccountId = 1 });
+        var (workOrderId, _) = await SeedWorkOrderAsync(
+            context,
+            new Dispatch { Id = 10, VendorId = 5, WorkOrderId = 2, NTEAmount = 1000m });
+        context.DispatchWorkOrders.Add(new DispatchWorkOrder { DispatchId = 10, WorkOrderId = workOrderId });
+        await context.SaveChangesAsync();
+
+        var created = await CreateUpliftAsync(context, workOrderId, 100m);
+
+        var listed = await NewUpliftService(context).ListAsync(
+            workOrderId,
+            WorkOrderAccountTestHelpers.AccountUser(),
+            CancellationToken.None);
+        Assert.Equal(created!.Id, Assert.Single(listed!).Id);
+    }
+
+    [Fact]
+    public async Task CrossTenant_CreateAndList_AreRejected()
+    {
+        await using var context = CreateContext();
+        await WorkOrderAccountTestHelpers.EnsureAccountAsync(context, id: 2, name: "Other Corp");
+        var row = await BoardCreateWithVendorAsync(context);
+        await CreateUpliftAsync(context, row.Id, 1m);
+
+        var created = await CreateUpliftAsync(context, row.Id, 1m, accountId: 2);
+        var listed = await NewUpliftService(context).ListAsync(
+            row.Id,
+            WorkOrderAccountTestHelpers.AccountUser(accountId: 2),
+            CancellationToken.None);
+
+        Assert.Null(created);
+        Assert.Null(listed);
+        Assert.Equal(1, await context.DispatchUpliftRequests.CountAsync());
+    }
+}

SeaHavenIndustries.Tests/WorkOrderUpliftServiceTests.cs

@@ -289,7 +289,21 @@ public sealed class WorkOrderUpliftServiceTests
     {
         await using var context = CreateContext();
         var (workOrder, dispatch) = await SeedWorkOrderAsync(context);
-        dispatch.WorkOrderId = null;
+        // SH-393: an unlinked primary is no longer an uplift target, so the shared-dispatch
+        // case (owned by another work order, linked to this one) carries the duplicate check.
+        context.workOrders.Add(new WorkOrder
+        {
+            Id = 2,
+            InternalWONumber = "10000000002",
+            AccountId = 1,
+            WorkOrderType = WorkOrderType.PM,
+        });
+        dispatch.WorkOrderId = 2;
+        context.DispatchWorkOrders.Add(new DispatchWorkOrder
+        {
+            DispatchId = dispatch.Id,
+            WorkOrderId = workOrder.Id,
+        });
         context.DispatchUpliftRequests.Add(new DispatchUpliftRequest
         {
             Id = 100,