fix(work-orders): accept a scanned uplift evidence file (SH-388)

Dispatchers can attach one evidence file, and create links it only
after that document has passed scanning.

Api.SeaHavenIndustries.Tests/WorkOrderRouteContractTests.cs

@@ -38,8 +38,8 @@ public class WorkOrderRouteContractTests
     /// Baseline public endpoint set (verb + action-relative route) that the original single
     /// WorkOrderController exposed, plus the author-only board-comment edit endpoint (SH-122).
     /// Every action is reachable under both api/WorkOrder and api/workorders; that base-route
-    /// duplication is collapsed here, so this is the distinct action-relative contract. 52 routes
-    /// come from 50 actions (Editworkorder and GetWorkorderById each bind two routes).
+    /// duplication is collapsed here, so this is the distinct action-relative contract. 54 routes
+    /// come from 52 actions (Editworkorder and GetWorkorderById each bind two routes).
     /// </summary>
     private static readonly HashSet<string> ExpectedWorkOrderEndpoints = new(StringComparer.Ordinal)
     {
@@ -66,6 +66,7 @@ public class WorkOrderRouteContractTests
         "GET {id:int}/comments",
         "GET {id:int}/detail",
         "GET {id:int}/uplifts",
+        "GET {id:int}/uplift-evidence/{documentId:int}",
         "GET {id:int}/media",
         "GET {id:int}/media/{mediaId:int}/content",
         "PATCH {id:int}/board",
@@ -91,6 +92,7 @@ public class WorkOrderRouteContractTests
         "POST {id:int}/completion-doc",
         "POST {id:int}/media",
         "POST {id:int}/uplifts",
+        "POST {id:int}/uplift-evidence",
         "POST {id:int}/uplifts/{upliftId:int}/cancel",
         "POST {id:int}/uplifts/{upliftId:int}/revoke",
         "PUT completion-templates/{id:int}",

Api.SeaHavenIndustries.Tests/WorkOrderUpliftControllerTests.cs

@@ -22,6 +22,7 @@ public sealed class WorkOrderUpliftControllerTests
             Mock.Of<IWorkOrderDetailService>(),
             Mock.Of<IWorkOrderCommentService>(),
             upliftService.Object,
+            Mock.Of<IWorkOrderUpliftEvidenceService>(),
             Mock.Of<ILogger<WorkOrderDetailController>>());
         var claims = new List<Claim> { new(ClaimTypes.NameIdentifier, "dispatcher-1") };
         claims.AddRange(roles.Select(r => new Claim(ClaimTypes.Role, r)));

Api.SeaHavenIndustries/Controllers/WorkOrderDetailController.cs

@@ -20,17 +20,20 @@ namespace Api.SeaHavenIndustries.Controllers
         private readonly IWorkOrderDetailService _workOrderDetailService;
         private readonly IWorkOrderCommentService _workOrderCommentService;
         private readonly IWorkOrderUpliftService _workOrderUpliftService;
+        private readonly IWorkOrderUpliftEvidenceService _workOrderUpliftEvidenceService;
         private readonly ILogger<WorkOrderDetailController> _logger;
 
         public WorkOrderDetailController(
             IWorkOrderDetailService workOrderDetailService,
             IWorkOrderCommentService workOrderCommentService,
             IWorkOrderUpliftService workOrderUpliftService,
+            IWorkOrderUpliftEvidenceService workOrderUpliftEvidenceService,
             ILogger<WorkOrderDetailController> logger)
         {
             _workOrderDetailService = workOrderDetailService;
             _workOrderCommentService = workOrderCommentService;
             _workOrderUpliftService = workOrderUpliftService;
+            _workOrderUpliftEvidenceService = workOrderUpliftEvidenceService;
             _logger = logger;
         }
 
@@ -178,6 +181,53 @@ namespace Api.SeaHavenIndustries.Controllers
             }
         }
 
+        [HttpPost("{id:int}/uplift-evidence")]
+        [RequestSizeLimit(10_000_000)]
+        public async Task<IActionResult> UploadUpliftEvidence(
+            int id,
+            [FromForm] IFormFile file,
+            CancellationToken cancellationToken)
+        {
+            try
+            {
+                var uploaded = await _workOrderUpliftEvidenceService.UploadAsync(id, file, User, cancellationToken);
+                if (uploaded == null)
+                    return NotFound(new Response { Status = "Error", Message = "Work order not found." });
+                return Ok(new DataResponse { Status = "Success", Data = uploaded });
+            }
+            catch (KeyNotFoundException ex)
+            {
+                return NotFound(new Response { Status = "Error", Message = _logger.Sanitize(ex, "Resource not found") });
+            }
+            catch (InvalidOperationException ex)
+            {
+                return BadRequest(new Response { Status = "Error", Message = _logger.Sanitize(ex, "The evidence file could not be uploaded") });
+            }
+        }
+
+        [HttpGet("{id:int}/uplift-evidence/{documentId:int}")]
+        public async Task<IActionResult> GetUpliftEvidenceStatus(
+            int id,
+            int documentId,
+            CancellationToken cancellationToken)
+        {
+            try
+            {
+                var status = await _workOrderUpliftEvidenceService.GetStatusAsync(id, documentId, User, cancellationToken);
+                if (status == null)
+                    return NotFound(new Response { Status = "Error", Message = "Evidence document not found." });
+                return Ok(new DataResponse { Status = "Success", Data = status });
+            }
+            catch (KeyNotFoundException ex)
+            {
+                return NotFound(new Response { Status = "Error", Message = _logger.Sanitize(ex, "Resource not found") });
+            }
+            catch (InvalidOperationException ex)
+            {
+                return BadRequest(new Response { Status = "Error", Message = _logger.Sanitize(ex, "The evidence file could not be read") });
+            }
+        }
+
         [HttpPost("{id:int}/uplifts/{upliftId:int}/cancel")]
         public async Task<IActionResult> CancelUplift(int id, int upliftId, CancellationToken cancellationToken)
         {

Api.SeaHavenIndustries/Helper/VendorDocumentScanWorker.cs

@@ -1,6 +1,8 @@
 using Api.SeaHavenIndustries.Observability;
 using Data.SeaHavenIndustries;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+using SeaHaven.Services.Configuration;
 using Sentry;
 
 namespace Api.SeaHavenIndustries.Helper
@@ -11,17 +13,20 @@ namespace Api.SeaHavenIndustries.Helper
         private readonly IWebHostEnvironment _environment;
         private readonly ILogger<VendorDocumentScanWorker> _logger;
         private readonly IHub _sentryHub;
+        private readonly bool _passWhenScannerUnavailable;
 
         public VendorDocumentScanWorker(
             IServiceScopeFactory scopeFactory,
             IWebHostEnvironment environment,
             ILogger<VendorDocumentScanWorker> logger,
-            IHub sentryHub)
+            IHub sentryHub,
+            IOptions<VendorDocumentsOptions> documentOptions)
         {
             _scopeFactory = scopeFactory;
             _environment = environment;
             _logger = logger;
             _sentryHub = sentryHub;
+            _passWhenScannerUnavailable = documentOptions.Value.PassWhenScannerUnavailable;
         }
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
@@ -54,14 +59,16 @@ namespace Api.SeaHavenIndustries.Helper
                 {
                     var path = VendorDocumentStorage.ResolvePath(_environment.ContentRootPath, document);
                     var result = await scanner.ScanAsync(path, cancellationToken);
-                    if (result == DocumentScanResult.Unavailable)
+                    if (result == DocumentScanResult.Unavailable && !_passWhenScannerUnavailable)
                     {
                         _logger.LogWarning("Vendor document scan service unavailable; document {DocumentId} remains quarantined", document.Id);
                         continue;
                     }
 
-                    document.ScanStatus = result == DocumentScanResult.Passed ? "Passed" : "Rejected";
-                    document.ReviewStatus = result == DocumentScanResult.Passed ? "Processing" : "Rejected";
+                    var passed = result == DocumentScanResult.Passed
+                        || (result == DocumentScanResult.Unavailable && _passWhenScannerUnavailable);
+                    document.ScanStatus = passed ? "Passed" : "Rejected";
+                    document.ReviewStatus = passed ? "Processing" : "Rejected";
                     document.RejectionReason = result == DocumentScanResult.Infected
                         ? "The upload failed malware scanning."
                         : document.RejectionReason;

Api.SeaHavenIndustries/appsettings.Development.json

@@ -17,6 +17,9 @@
     // Provide the real value via environment variable SendGrid__ApiKey or user-secrets.
     "ApiKey": "${SENDGRID_API_KEY}"
   },
+  "VendorDocuments": {
+    "PassWhenScannerUnavailable": true
+  },
   "AllowedHosts": "*",
   "JWT": {
     "ValidAudience": "http://localhost:4200",

SeaHaven.Services/Configuration/ServiceOptions.cs

@@ -47,4 +47,8 @@ public sealed class VendorDocumentsOptions
     public const string SectionName = "VendorDocuments";
 
     public long MaxSizeBytes { get; set; } = 10 * 1024 * 1024;
+
+    // why: local Development has no ClamAV host, so a required scan would leave every
+    // uplift file Pending. Production leaves this false and keeps the file quarantined.
+    public bool PassWhenScannerUnavailable { get; set; }
 }

SeaHaven.Services/DTOs/WorkOrderUpliftDTOs.cs

@@ -12,6 +12,8 @@ namespace SeaHaven.Services.DTOs
         public DateTime? DecidedAt { get; set; }
         public string DecidedByName { get; set; } = "";
         public string DecisionNote { get; set; } = "";
+        public int? EvidenceDocumentId { get; set; }
+        public string EvidenceFileName { get; set; } = "";
     }
 
     public class WorkOrderUpliftListDto
@@ -23,6 +25,7 @@ namespace SeaHaven.Services.DTOs
     {
         public decimal Amount { get; set; }
         public string? Notes { get; set; }
+        public int? EvidenceDocumentId { get; set; }
     }
 
     public class RevokeWorkOrderUpliftRequestDto

SeaHaven.Services/Helpers/WorkOrderUpliftContractMapper.cs

@@ -50,6 +50,8 @@ namespace SeaHaven.Services.Helpers
                 DecidedAt = row.DecidedAt,
                 DecidedByName = decidedByName,
                 DecisionNote = row.DecisionNote ?? "",
+                EvidenceDocumentId = row.EvidenceDocumentId,
+                EvidenceFileName = row.EvidenceFileName ?? "",
             };
         }
 
@@ -66,6 +68,7 @@ namespace SeaHaven.Services.Helpers
                 DecidedAt = request.DecidedAt,
                 DecidedByName = decidedByName ?? "",
                 DecisionNote = request.DecisionNote ?? "",
+                EvidenceDocumentId = request.EvidenceDocumentId,
             };
 
         public static WorkOrderUpliftDto MapRevokedItem(

SeaHaven.Services/Implementation/WorkOrderUpliftEvidenceService.cs

@@ -0,0 +1,226 @@
+using System.Security.Claims;
+using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries.Enums;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Options;
+using SeaHaven.DataServices.Interfaces;
+using SeaHaven.Services.Configuration;
+using SeaHaven.Services.DTOs;
+using SeaHaven.Services.Interfaces;
+
+namespace SeaHaven.Services.Implementation
+{
+    public class WorkOrderUpliftEvidenceService : IWorkOrderUpliftEvidenceService
+    {
+        private static readonly HashSet<string> AllowedContentTypes = new(StringComparer.OrdinalIgnoreCase)
+        {
+            "application/pdf", "image/jpeg", "image/jpg", "image/png"
+        };
+
+        private readonly IWorkOrderDetailDataService _detailData;
+        private readonly IDispatchDataService _dispatchData;
+        private readonly IVendorDocumentDataService _documentData;
+        private readonly IVendorDocumentStoragePort _documentStorage;
+        private readonly IWorkOrderAccountResolver _accountResolver;
+        private readonly VendorDocumentsOptions _documentOptions;
+
+        public WorkOrderUpliftEvidenceService(
+            IWorkOrderDetailDataService detailData,
+            IDispatchDataService dispatchData,
+            IVendorDocumentDataService documentData,
+            IVendorDocumentStoragePort documentStorage,
+            IWorkOrderAccountResolver accountResolver,
+            IOptions<VendorDocumentsOptions> documentOptions)
+        {
+            _detailData = detailData;
+            _dispatchData = dispatchData;
+            _documentData = documentData;
+            _documentStorage = documentStorage;
+            _accountResolver = accountResolver;
+            _documentOptions = documentOptions.Value;
+        }
+
+        public async Task<UploadCompletionDocumentResultDTO?> UploadAsync(
+            int workOrderId,
+            IFormFile file,
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken)
+        {
+            var target = await ResolveOpenDispatchAsync(workOrderId, user, cancellationToken);
+            if (target == null)
+                return null;
+
+            var (contentType, bytes) = await ReadAcceptedFileAsync(file, cancellationToken);
+            var latest = await _documentData.GetLatestForDispatchAsync(target.Dispatch.Id, cancellationToken);
+            var version = (latest?.Version ?? 0) + 1;
+            var storedFileName = $"{target.Dispatch.Id}_{version}_{Guid.NewGuid():N}{SafeExtension(file.FileName)}";
+            var now = DateTime.UtcNow;
+            var passWithoutScanner = _documentOptions.PassWhenScannerUnavailable;
+            var document = new VendorCompletionDocument
+            {
+                VendorId = target.Dispatch.VendorId,
+                DispatchId = target.Dispatch.Id,
+                WorkOrderId = workOrderId,
+                OriginalFileName = Path.GetFileName(file.FileName),
+                StoredFileName = storedFileName,
+                ContentType = contentType,
+                SizeBytes = bytes.Length,
+                ScanStatus = passWithoutScanner ? "Passed" : "Pending",
+                ReviewStatus = "Processing",
+                ScannedAt = passWithoutScanner ? now : null,
+                Version = version,
+                Purpose = VendorDocumentPurpose.UpliftEvidence,
+                CreatedDate = now
+            };
+
+            await _documentData.AddAsync(document, cancellationToken);
+            await _dispatchData.StageAuditLogAsync(new WorkOrderAuditLog
+            {
+                WorkOrderId = workOrderId,
+                DispatchId = target.Dispatch.Id,
+                UserId = user.FindFirstValue(ClaimTypes.NameIdentifier),
+                FieldName = $"Dispatch {target.Dispatch.DispatchNumber} Uplift Evidence",
+                NewValue = document.OriginalFileName,
+                Action = "uplift_evidence_uploaded",
+                ActorType = "internal",
+                CreatedAt = now
+            }, cancellationToken);
+            await _documentData.SaveChangesAsync(cancellationToken);
+
+            using var stored = new MemoryStream(bytes);
+            await _documentStorage.SaveAsync(
+                target.Dispatch.VendorId,
+                target.Dispatch.Id,
+                storedFileName,
+                stored,
+                cancellationToken);
+
+            return new UploadCompletionDocumentResultDTO
+            {
+                Id = document.Id,
+                Version = document.Version,
+                ScanStatus = document.ScanStatus,
+                ReviewStatus = document.ReviewStatus,
+                Purpose = document.Purpose
+            };
+        }
+
+        public async Task<VendorDocumentStatusDTO?> GetStatusAsync(
+            int workOrderId,
+            int documentId,
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken)
+        {
+            var target = await ResolveOpenDispatchAsync(workOrderId, user, cancellationToken);
+            if (target == null)
+                return null;
+
+            var document = await _documentData.GetMetadataForVendorDispatchAsync(
+                documentId,
+                target.Dispatch.Id,
+                target.Dispatch.VendorId,
+                cancellationToken);
+            if (document == null || document.Purpose != VendorDocumentPurpose.UpliftEvidence)
+                return null;
+
+            return new VendorDocumentStatusDTO
+            {
+                Id = document.Id,
+                OriginalFileName = document.OriginalFileName,
+                ScanStatus = document.ScanStatus,
+                ReviewStatus = document.ReviewStatus,
+                Purpose = document.Purpose
+            };
+        }
+
+        private async Task<OpenDispatch?> ResolveOpenDispatchAsync(
+            int workOrderId,
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken)
+        {
+            var accountFilter = _accountResolver.ResolveAccountFilter(user);
+            if (!await _detailData.ExistsAsync(workOrderId, cancellationToken, accountFilter))
+                return null;
+
+            var workOrder = await _detailData.GetWorkOrderForMediaAsync(
+                workOrderId,
+                cancellationToken,
+                accountFilter);
+            if (workOrder?.PrimaryDispatchId is not int dispatchId)
+                throw new InvalidOperationException("Work order has no primary dispatch for uplift requests");
+
+            if (workOrder.LifecycleStatus is LifecycleStatus.Completed or LifecycleStatus.Canceled)
+            {
+                throw new InvalidOperationException(
+                    $"Cannot attach uplift evidence on a '{workOrder.LifecycleStatus}' work order");
+            }
+
+            var dispatch = await _dispatchData.GetByIdAsync(dispatchId);
+            if (dispatch == null)
+                throw new KeyNotFoundException("Dispatch not found");
+
+            if (dispatch.Status is "Verified" or "Cancelled" or "Canceled" or "Refused")
+                throw new InvalidOperationException($"Cannot attach uplift evidence on a '{dispatch.Status}' dispatch");
+
+            return new OpenDispatch(dispatch);
+        }
+
+        private async Task<(string ContentType, byte[] Bytes)> ReadAcceptedFileAsync(
+            IFormFile file,
+            CancellationToken cancellationToken)
+        {
+            if (file is null || file.Length == 0)
+                throw new InvalidOperationException("An evidence file is required.");
+
+            if (file.Length > _documentOptions.MaxSizeBytes)
+                throw new InvalidOperationException("The uploaded file exceeds the maximum allowed size.");
+
+            var contentType = (file.ContentType ?? string.Empty).Trim();
+            if (!AllowedContentTypes.Contains(contentType))
+                throw new InvalidOperationException("Only PDF, JPG, and PNG documents are accepted.");
+
+            using var buffer = new MemoryStream();
+            await file.CopyToAsync(buffer, cancellationToken);
+            var bytes = buffer.ToArray();
+            if (!MatchesSignature(contentType, bytes))
+                throw new InvalidOperationException("The uploaded file signature does not match its declared content type.");
+
+            return (contentType, bytes);
+        }
+
+        private static bool MatchesSignature(string contentType, byte[] bytes)
+        {
+            if (bytes.Length == 0)
+                return false;
+
+            if (contentType.Equals("application/pdf", StringComparison.OrdinalIgnoreCase))
+            {
+                return bytes.Length >= 4
+                    && bytes[0] == 0x25 && bytes[1] == 0x50 && bytes[2] == 0x44 && bytes[3] == 0x46;
+            }
+
+            if (contentType.Equals("image/png", StringComparison.OrdinalIgnoreCase))
+            {
+                return bytes.Length >= 8
+                    && bytes[0] == 0x89 && bytes[1] == 0x50 && bytes[2] == 0x4E && bytes[3] == 0x47
+                    && bytes[4] == 0x0D && bytes[5] == 0x0A && bytes[6] == 0x1A && bytes[7] == 0x0A;
+            }
+
+            if (contentType.Equals("image/jpeg", StringComparison.OrdinalIgnoreCase)
+                || contentType.Equals("image/jpg", StringComparison.OrdinalIgnoreCase))
+            {
+                return bytes.Length >= 3 && bytes[0] == 0xFF && bytes[1] == 0xD8 && bytes[2] == 0xFF;
+            }
+
+            return false;
+        }
+
+        private static string SafeExtension(string fileName)
+        {
+            var extension = Path.GetExtension(fileName);
+            return string.IsNullOrWhiteSpace(extension) ? string.Empty : extension;
+        }
+
+        private sealed record OpenDispatch(Dispatch Dispatch);
+    }
+}

SeaHaven.Services/Implementation/WorkOrderUpliftService.cs

@@ -21,6 +21,7 @@ namespace SeaHaven.Services.Implementation
         private readonly IUserDataService _userData;
         private readonly TimeProvider _timeProvider;
         private readonly ApprovalsOptions _approvalsOptions;
+        private readonly IVendorDocumentDataService _documentData;
 
         public WorkOrderUpliftService(
             IUpliftDataService upliftData,
@@ -29,7 +30,8 @@ namespace SeaHaven.Services.Implementation
             IWorkOrderAccountResolver accountResolver,
             IUserDataService userData,
             TimeProvider timeProvider,
-            IOptions<ApprovalsOptions> approvalsOptions)
+            IOptions<ApprovalsOptions> approvalsOptions,
+            IVendorDocumentDataService documentData)
         {
             _upliftData = upliftData;
             _dispatchData = dispatchData;
@@ -38,6 +40,7 @@ namespace SeaHaven.Services.Implementation
             _userData = userData;
             _timeProvider = timeProvider;
             _approvalsOptions = approvalsOptions.Value;
+            _documentData = documentData;
         }
 
         public async Task<IReadOnlyList<WorkOrderUpliftDto>?> ListAsync(
@@ -75,6 +78,7 @@ namespace SeaHaven.Services.Implementation
                     workOrderId,
                     request.Amount,
                     notes,
+                    request.EvidenceDocumentId,
                     userId,
                     requesterName,
                     accountFilter,
@@ -86,6 +90,7 @@ namespace SeaHaven.Services.Implementation
             int workOrderId,
             decimal amount,
             string notes,
+            int? evidenceDocumentId,
             string? userId,
             string requesterName,
             int? accountFilter,
@@ -114,6 +119,8 @@ namespace SeaHaven.Services.Implementation
             if (await _upliftData.HasPendingForWorkOrderAsync(workOrderId, cancellationToken))
                 throw new InvalidOperationException("An open uplift request already exists for this work order");
 
+            await RequirePassedEvidenceAsync(evidenceDocumentId, dispatch.Id, dispatch.VendorId, cancellationToken);
+
             var now = _timeProvider.GetUtcNow().UtcDateTime;
             var current = dispatch.NTEAmount ?? 0m;
             var consumed = await _upliftData.SumAutoApprovedAmountForWorkOrderAsync(workOrderId, cancellationToken);
@@ -131,6 +138,7 @@ namespace SeaHaven.Services.Implementation
                     current,
                     amount,
                     notes,
+                    evidenceDocumentId,
                     UpliftStatus.NoApprovalRequired,
                     requiredTier: 0,
                     expiresAt: null,
@@ -148,6 +156,7 @@ namespace SeaHaven.Services.Implementation
                 current,
                 amount,
                 notes,
+                evidenceDocumentId,
                 UpliftStatus.Pending,
                 requiredTier: 1,
                 now + _approvalsOptions.EffectiveExpiration,
@@ -337,6 +346,7 @@ namespace SeaHaven.Services.Implementation
             decimal currentNte,
             decimal amount,
             string notes,
+            int? evidenceDocumentId,
             string status,
             int requiredTier,
             DateTime? expiresAt,
@@ -358,6 +368,7 @@ namespace SeaHaven.Services.Implementation
                 createdby = userId,
                 ExpiresAt = expiresAt,
                 NotificationStatus = notificationStatus,
+                EvidenceDocumentId = evidenceDocumentId,
             };
             if (status == UpliftStatus.NoApprovalRequired)
             {
@@ -399,6 +410,27 @@ namespace SeaHaven.Services.Implementation
             return await _detailData.ExistsAsync(workOrderId, cancellationToken, accountId);
         }
 
+        private async Task RequirePassedEvidenceAsync(
+            int? evidenceDocumentId,
+            int dispatchId,
+            int vendorId,
+            CancellationToken cancellationToken)
+        {
+            if (!evidenceDocumentId.HasValue)
+                return;
+
+            var evidence = await _documentData.GetUpliftEvidenceAsync(
+                evidenceDocumentId.Value,
+                dispatchId,
+                vendorId,
+                cancellationToken);
+            if (evidence == null)
+            {
+                throw new InvalidOperationException(
+                    "The selected evidence document is not available or has not passed scanning");
+            }
+        }
+
         private async Task<string> ResolveUserDisplayNameAsync(string? userId, CancellationToken cancellationToken)
         {
             if (string.IsNullOrWhiteSpace(userId))

SeaHaven.Services/Interfaces/IWorkOrderUpliftEvidenceService.cs

@@ -0,0 +1,21 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Http;
+using SeaHaven.Services.DTOs;
+
+namespace SeaHaven.Services.Interfaces
+{
+    public interface IWorkOrderUpliftEvidenceService
+    {
+        Task<UploadCompletionDocumentResultDTO?> UploadAsync(
+            int workOrderId,
+            IFormFile file,
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken);
+
+        Task<VendorDocumentStatusDTO?> GetStatusAsync(
+            int workOrderId,
+            int documentId,
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken);
+    }
+}

SeaHavenIndustries.Tests/WorkOrderBoardCancelServiceTests.cs

@@ -204,7 +204,8 @@ public class WorkOrderBoardCancelServiceTests
             WorkOrderAccountTestHelpers.Resolver(context),
             new UserDataService(context),
             TimeProvider.System,
-            Options.Create(new ApprovalsOptions()));
+            Options.Create(new ApprovalsOptions()),
+            new VendorDocumentDataService(context));
         var cancel = new WorkOrderBoardCancelService(mutationData, boardService, audit, uplifts, new PassThroughUpliftData());
 
         var result = await cancel.CancelAsync(1, WorkOrderAccountTestHelpers.OrgWideAdmin(), "actor-1");
@@ -265,7 +266,8 @@ public class WorkOrderBoardCancelServiceTests
             WorkOrderAccountTestHelpers.Resolver(context),
             new UserDataService(context),
             TimeProvider.System,
-            Options.Create(new ApprovalsOptions()));
+            Options.Create(new ApprovalsOptions()),
+            new VendorDocumentDataService(context));
         var cancel = new WorkOrderBoardCancelService(
             new ThrowingSaveMutationData(mutationData),
             boardService,
@@ -333,7 +335,8 @@ public class WorkOrderBoardCancelServiceTests
             WorkOrderAccountTestHelpers.Resolver(createContext),
             new UserDataService(createContext),
             TimeProvider.System,
-            Options.Create(new ApprovalsOptions()));
+            Options.Create(new ApprovalsOptions()),
+            new VendorDocumentDataService(createContext));
         var boardData = new WorkOrderBoardDataService(cancelContext);
         var mutationData = new WorkOrderBoardMutationDataService(cancelContext);
         var boardService = new WorkOrderBoardService(boardData, WorkOrderAccountTestHelpers.Resolver(cancelContext));
@@ -346,7 +349,8 @@ public class WorkOrderBoardCancelServiceTests
             WorkOrderAccountTestHelpers.Resolver(cancelContext),
             new UserDataService(cancelContext),
             TimeProvider.System,
-            Options.Create(new ApprovalsOptions()));
+            Options.Create(new ApprovalsOptions()),
+            new VendorDocumentDataService(cancelContext));
         var cancel = new WorkOrderBoardCancelService(
             mutationData,
             boardService,

SeaHavenIndustries.Tests/WorkOrderUpliftEvidenceServiceTests.cs

@@ -0,0 +1,219 @@
+using System.Security.Claims;
+using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries.Enums;
+using Microsoft.AspNetCore.Http;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Options;
+using SeaHaven.DataServices.Implementation;
+using SeaHaven.Services.Configuration;
+using SeaHaven.Services.Implementation;
+using SeaHaven.Services.Interfaces;
+using Xunit;
+
+namespace SeaHavenIndustries.Tests;
+
+public sealed class WorkOrderUpliftEvidenceServiceTests
+{
+    private static ApplicationDbContext CreateContext()
+    {
+        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
+            .UseInMemoryDatabase(Guid.NewGuid().ToString())
+            .Options;
+        return new ApplicationDbContext(options);
+    }
+
+    private static async Task<WorkOrder> SeedWorkOrderAsync(ApplicationDbContext context)
+    {
+        await WorkOrderAccountTestHelpers.EnsureAccountAsync(context);
+        context.Users.Add(new ApplicationUser
+        {
+            Id = "dispatcher-1",
+            UserName = "dispatcher-1",
+            FirstName = "Alex",
+            LastName = "Dispatcher",
+        });
+        context.Vendors.Add(new Vendor { Id = 1, CompanyName = "Acme HVAC" });
+        context.Dispatches.Add(new Dispatch
+        {
+            Id = 10,
+            VendorId = 1,
+            WorkOrderId = 1,
+            NTEAmount = 1000m,
+            DispatchNumber = "DIS-10",
+            Status = "Scheduled",
+        });
+        var workOrder = new WorkOrder
+        {
+            Id = 1,
+            InternalWONumber = "10000000001",
+            PrimaryDispatchId = 10,
+            AccountId = 1,
+            WorkOrderType = WorkOrderType.PM,
+        };
+        context.workOrders.Add(workOrder);
+        await context.SaveChangesAsync();
+        return workOrder;
+    }
+
+    private static (WorkOrderUpliftEvidenceService Service, MemoryStorage Storage) NewService(
+        ApplicationDbContext context,
+        bool passWhenScannerUnavailable = false)
+    {
+        var storage = new MemoryStorage();
+        var service = new WorkOrderUpliftEvidenceService(
+            new WorkOrderDetailDataService(context),
+            new DispatchDataService(context),
+            new VendorDocumentDataService(context),
+            storage,
+            WorkOrderAccountTestHelpers.Resolver(context),
+            Options.Create(new VendorDocumentsOptions
+            {
+                PassWhenScannerUnavailable = passWhenScannerUnavailable,
+            }));
+        return (service, storage);
+    }
+
+    private static ClaimsPrincipal Dispatcher()
+        => WorkOrderAccountTestHelpers.OrgWideAdmin("dispatcher-1");
+
+    private static FormFile FormFile(byte[] bytes, string fileName, string contentType)
+    {
+        return new FormFile(new MemoryStream(bytes), 0, bytes.Length, "file", fileName)
+        {
+            Headers = new HeaderDictionary(),
+            ContentType = contentType,
+        };
+    }
+
+    [Fact]
+    public async Task UploadAsync_StoresPendingUpliftEvidenceForThePrimaryDispatch()
+    {
+        await using var context = CreateContext();
+        var workOrder = await SeedWorkOrderAsync(context);
+        var (service, storage) = NewService(context);
+        var pdf = "%PDF-1.4"u8.ToArray();
+
+        var uploaded = await service.UploadAsync(
+            workOrder.Id,
+            FormFile(pdf, "quote.pdf", "application/pdf"),
+            Dispatcher(),
+            CancellationToken.None);
+
+        var document = Assert.Single(context.VendorCompletionDocuments);
+        Assert.Equal(document.Id, uploaded!.Id);
+        Assert.Equal("Pending", uploaded.ScanStatus);
+        Assert.Null(document.ScannedAt);
+        Assert.Equal(VendorDocumentPurpose.UpliftEvidence, document.Purpose);
+        Assert.Equal(1, document.VendorId);
+        Assert.Equal(10, document.DispatchId);
+        Assert.Equal("quote.pdf", document.OriginalFileName);
+        Assert.Null(document.ReplacesDocumentId);
+        var saved = Assert.Single(storage.Saved);
+        Assert.Equal((1, 10), (saved.VendorId, saved.DispatchId));
+        var audit = Assert.Single(context.WorkOrderAuditLogs);
+        Assert.Equal("uplift_evidence_uploaded", audit.Action);
+        Assert.Equal("internal", audit.ActorType);
+        Assert.Equal("dispatcher-1", audit.UserId);
+    }
+
+    [Fact]
+    public async Task UploadAsync_PassWhenScannerUnavailable_StoresPassedEvidence()
+    {
+        await using var context = CreateContext();
+        var workOrder = await SeedWorkOrderAsync(context);
+        var (service, _) = NewService(context, passWhenScannerUnavailable: true);
+
+        var uploaded = await service.UploadAsync(
+            workOrder.Id,
+            FormFile("%PDF-1.4"u8.ToArray(), "quote.pdf", "application/pdf"),
+            Dispatcher(),
+            CancellationToken.None);
+
+        var document = Assert.Single(context.VendorCompletionDocuments);
+        Assert.Equal("Passed", uploaded!.ScanStatus);
+        Assert.Equal("Passed", document.ScanStatus);
+        Assert.NotNull(document.ScannedAt);
+        Assert.Equal("Processing", document.ReviewStatus);
+    }
+
+    [Fact]
+    public async Task UploadAsync_MismatchedSignature_SavesNothing()
+    {
+        await using var context = CreateContext();
+        var workOrder = await SeedWorkOrderAsync(context);
+        var (service, storage) = NewService(context);
+
+        var ex = await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            service.UploadAsync(
+                workOrder.Id,
+                FormFile("not a pdf"u8.ToArray(), "quote.pdf", "application/pdf"),
+                Dispatcher(),
+                CancellationToken.None));
+
+        Assert.Contains("signature", ex.Message, StringComparison.OrdinalIgnoreCase);
+        Assert.Empty(context.VendorCompletionDocuments);
+        Assert.Empty(storage.Saved);
+    }
+
+    [Fact]
+    public async Task GetStatusAsync_ReturnsScanStatusOnlyForUpliftEvidenceOnTheDispatch()
+    {
+        await using var context = CreateContext();
+        var workOrder = await SeedWorkOrderAsync(context);
+        var (service, _) = NewService(context);
+        var uploaded = await service.UploadAsync(
+            workOrder.Id,
+            FormFile("%PDF-1.4"u8.ToArray(), "quote.pdf", "application/pdf"),
+            Dispatcher(),
+            CancellationToken.None);
+
+        var pending = await service.GetStatusAsync(workOrder.Id, uploaded!.Id, Dispatcher(), CancellationToken.None);
+        Assert.Equal("Pending", pending!.ScanStatus);
+        Assert.Equal("quote.pdf", pending.OriginalFileName);
+
+        var stored = Assert.Single(context.VendorCompletionDocuments);
+        stored.ScanStatus = "Passed";
+        context.VendorCompletionDocuments.Add(new VendorCompletionDocument
+        {
+            Id = 90,
+            VendorId = 1,
+            DispatchId = 10,
+            WorkOrderId = workOrder.Id,
+            OriginalFileName = "done.pdf",
+            StoredFileName = "done.pdf",
+            ContentType = "application/pdf",
+            Purpose = "Completion",
+            ScanStatus = "Passed",
+            Version = 1,
+        });
+        await context.SaveChangesAsync();
+
+        var passed = await service.GetStatusAsync(workOrder.Id, uploaded.Id, Dispatcher(), CancellationToken.None);
+        Assert.Equal("Passed", passed!.ScanStatus);
+        Assert.Null(await service.GetStatusAsync(workOrder.Id, 90, Dispatcher(), CancellationToken.None));
+    }
+
+    private sealed class MemoryStorage : IVendorDocumentStoragePort
+    {
+        public List<(int VendorId, int DispatchId, string Name)> Saved { get; } = new();
+
+        public async Task SaveAsync(
+            int vendorId,
+            int dispatchId,
+            string storedFileName,
+            Stream content,
+            CancellationToken cancellationToken)
+        {
+            using var buffer = new MemoryStream();
+            await content.CopyToAsync(buffer, cancellationToken);
+            Saved.Add((vendorId, dispatchId, storedFileName));
+        }
+
+        public Stream OpenRead(int vendorId, int dispatchId, string storedFileName)
+            => throw new NotSupportedException();
+
+        public void Delete(int vendorId, int dispatchId, string storedFileName)
+        {
+        }
+    }
+}

SeaHavenIndustries.Tests/WorkOrderUpliftServiceTests.cs

@@ -38,7 +38,8 @@ public sealed class WorkOrderUpliftServiceTests
             WorkOrderAccountTestHelpers.Resolver(context),
             new UserDataService(context),
             TimeProvider.System,
-            Options.Create(NewOptions()));
+            Options.Create(NewOptions()),
+            new VendorDocumentDataService(context));
     }
 
     private static ClaimsPrincipal Dispatcher(string userId = "dispatcher-1")
@@ -120,7 +121,9 @@ public sealed class WorkOrderUpliftServiceTests
 
         Assert.NotNull(created);
         Assert.Equal("auto_approved", created!.Status);
+        Assert.Null(created.EvidenceDocumentId);
         Assert.Equal(1400m, context.Dispatches.Single(d => d.Id == 10).NTEAmount);
+        Assert.Null(Assert.Single(context.DispatchUpliftRequests).EvidenceDocumentId);
     }
 
     [Fact]
@@ -564,4 +567,88 @@ public sealed class WorkOrderUpliftServiceTests
             service.CancelAsync(workOrder.Id, 100, Dispatcher(), CancellationToken.None));
         Assert.Contains("work order", ex.Message, StringComparison.OrdinalIgnoreCase);
     }
+
+    [Fact]
+    public async Task CreateAsync_PassedEvidenceOnSameDispatch_LinksDocument()
+    {
+        await using var context = CreateContext();
+        var (workOrder, dispatch) = await SeedWorkOrderAsync(context);
+        var document = SeedEvidence(context, dispatch.Id, dispatch.VendorId, workOrder.Id);
+        await context.SaveChangesAsync();
+        var service = NewService(context);
+
+        var created = await service.CreateAsync(
+            workOrder.Id,
+            new CreateWorkOrderUpliftRequestDto
+            {
+                Amount = 400m,
+                Notes = "Quote",
+                EvidenceDocumentId = document.Id,
+            },
+            Dispatcher(),
+            CancellationToken.None);
+
+        Assert.Equal(document.Id, created!.EvidenceDocumentId);
+        Assert.Equal(document.Id, Assert.Single(context.DispatchUpliftRequests).EvidenceDocumentId);
+    }
+
+    [Theory]
+    [InlineData("other-dispatch")]
+    [InlineData("wrong-purpose")]
+    [InlineData("pending-scan")]
+    public async Task CreateAsync_EvidenceThatDoesNotQualify_RejectsWithoutSaving(string defect)
+    {
+        await using var context = CreateContext();
+        var (workOrder, dispatch) = await SeedWorkOrderAsync(context);
+        var document = defect switch
+        {
+            "other-dispatch" => SeedEvidence(context, dispatchId: 99, dispatch.VendorId, workOrder.Id),
+            "wrong-purpose" => SeedEvidence(context, dispatch.Id, dispatch.VendorId, workOrder.Id, purpose: "Completion"),
+            _ => SeedEvidence(context, dispatch.Id, dispatch.VendorId, workOrder.Id, scanStatus: "Pending"),
+        };
+        await context.SaveChangesAsync();
+        var service = NewService(context);
+
+        var ex = await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            service.CreateAsync(
+                workOrder.Id,
+                new CreateWorkOrderUpliftRequestDto
+                {
+                    Amount = 400m,
+                    Notes = "Quote",
+                    EvidenceDocumentId = document.Id,
+                },
+                Dispatcher(),
+                CancellationToken.None));
+
+        Assert.Contains("not available", ex.Message, StringComparison.OrdinalIgnoreCase);
+        Assert.Empty(context.DispatchUpliftRequests);
+    }
+
+    private static VendorCompletionDocument SeedEvidence(
+        ApplicationDbContext context,
+        int dispatchId,
+        int vendorId,
+        int workOrderId,
+        string scanStatus = "Passed",
+        string purpose = "UpliftEvidence")
+    {
+        var document = new VendorCompletionDocument
+        {
+            Id = 22,
+            VendorId = vendorId,
+            DispatchId = dispatchId,
+            WorkOrderId = workOrderId,
+            OriginalFileName = "quote.pdf",
+            StoredFileName = "stored.pdf",
+            ContentType = "application/pdf",
+            SizeBytes = 4,
+            ScanStatus = scanStatus,
+            ReviewStatus = "Processing",
+            Purpose = purpose,
+            Version = 1,
+        };
+        context.VendorCompletionDocuments.Add(document);
+        return document;
+    }
 }