refactor(core): reorganize DTOs into Models and ViewModels folders

Move DTOs from ApiContracts to appropriate locations:
- SignalR DTOs → ViewModels (renamed Dto→ViewModel suffix)
- Pipeline DTOs → Models/Pipelines
- UserInfoDto → Models/Auth
- DataUpdateDto → Models/Infrastructure

NEW/src/JdeScoping.Api/Controllers/AuthController.cs

@@ -2,7 +2,6 @@ using System.Security.Claims;
 using System.Text.Json;
 using JdeScoping.Api.Extensions;
 using JdeScoping.Core.ApiContracts;
-using JdeScoping.Core.ApiContracts.Auth;
 using JdeScoping.Core.Interfaces;
 using JdeScoping.Core.Models;
 using JdeScoping.Core.Models.Auth;

NEW/src/JdeScoping.Api/Controllers/PipelineController.cs

@@ -1,5 +1,5 @@
 using JdeScoping.Core.ApiContracts;
-using JdeScoping.Core.ApiContracts.Pipelines;
+using JdeScoping.Core.Models.Pipelines;
 using JdeScoping.Core.Models.Enums;
 using JdeScoping.DataSync.Configuration;
 using JdeScoping.DataSync.Contracts;

NEW/src/JdeScoping.Api/Controllers/RefreshStatusController.cs

@@ -0,0 +1,71 @@
+using JdeScoping.Core.ApiContracts;
+using JdeScoping.Core.Models.Infrastructure;
+using JdeScoping.Core.Interfaces;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace JdeScoping.Api.Controllers;
+
+/// <summary>
+/// API endpoints for data refresh/cache sync status.
+/// </summary>
+[Route(ApiRoutes.RefreshStatus.Base)]
+[ApiController]
+[Authorize]
+public class RefreshStatusController : ApiControllerBase
+{
+    private readonly ILotFinderRepository _repository;
+
+    public RefreshStatusController(ILotFinderRepository repository)
+    {
+        _repository = repository;
+    }
+
+    /// <summary>
+    /// Gets aggregated refresh status records within the specified date range.
+    /// </summary>
+    /// <param name="minDT">Start date filter.</param>
+    /// <param name="maxDT">End date filter.</param>
+    /// <param name="ct">Cancellation token.</param>
+    [HttpGet]
+    [ProducesResponseType(typeof(List<DataUpdateDto>), StatusCodes.Status200OK)]
+    public async Task<ActionResult<List<DataUpdateDto>>> GetRefreshStatus(
+        [FromQuery] DateTime minDT,
+        [FromQuery] DateTime maxDT,
+        CancellationToken ct)
+    {
+        // Get raw data updates from repository
+        var updates = await _repository.GetLastDataUpdatesAsync(ct);
+
+        // Filter by date range
+        var filtered = updates
+            .Where(u => u.StartDt >= minDT && u.StartDt <= maxDT.AddDays(1))
+            .ToList();
+
+        // Group by StartDt (rounded to minute) to aggregate multiple table updates into single rows
+        var aggregated = filtered
+            .GroupBy(u => new DateTime(u.StartDt.Year, u.StartDt.Month, u.StartDt.Day, u.StartDt.Hour, u.StartDt.Minute, 0))
+            .Select(g => new DataUpdateDto
+            {
+                StartDt = g.Key,
+                EndDt = g.Max(u => u.EndDt),
+                WasSuccessful = g.All(u => u.WasSuccessful),
+                BranchRecords = (int)(g.FirstOrDefault(u => u.TableName == "Branch")?.NumberRecords ?? 0),
+                ProfitCenterRecords = (int)(g.FirstOrDefault(u => u.TableName == "ProfitCenter")?.NumberRecords ?? 0),
+                WorkCenterRecords = (int)(g.FirstOrDefault(u => u.TableName == "WorkCenter")?.NumberRecords ?? 0),
+                OrgHierarchyRecords = (int)(g.FirstOrDefault(u => u.TableName == "OrgHierarchy")?.NumberRecords ?? 0),
+                StatusCodeRecords = (int)(g.FirstOrDefault(u => u.TableName == "StatusCode")?.NumberRecords ?? 0),
+                UserRecords = (int)(g.FirstOrDefault(u => u.TableName == "JdeUser")?.NumberRecords ?? 0),
+                ItemRecords = (int)(g.FirstOrDefault(u => u.TableName == "Item")?.NumberRecords ?? 0),
+                LotRecords = (int)(g.FirstOrDefault(u => u.TableName == "Lot")?.NumberRecords ?? 0),
+                WorkOrderRecords = (int)(g.FirstOrDefault(u => u.TableName.Contains("WorkOrder_"))?.NumberRecords ?? 0),
+                WorkOrderStepRecords = (int)(g.FirstOrDefault(u => u.TableName.Contains("WorkOrderStep"))?.NumberRecords ?? 0),
+                WorkOrderComponentRecords = (int)(g.FirstOrDefault(u => u.TableName.Contains("WorkOrderComponent"))?.NumberRecords ?? 0)
+            })
+            .OrderByDescending(d => d.StartDt)
+            .ToList();
+
+        return Ok(aggregated);
+    }
+}

NEW/src/JdeScoping.Api/Hubs/StatusHub.cs

@@ -1,4 +1,4 @@
-using JdeScoping.Core.ApiContracts.SignalR;
+using JdeScoping.Core.ViewModels;
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.Extensions.Logging;
 
@@ -9,7 +9,7 @@ namespace JdeScoping.Api.Hubs;
 /// </summary>
 public class StatusHub : Hub
 {
-    private static StatusUpdateDto _cachedStatus = new()
+    private static StatusUpdateViewModel _cachedStatus = new()
     {
         Message = "Unknown",
         Timestamp = DateTime.UtcNow
@@ -27,7 +27,7 @@ public class StatusHub : Hub
     /// Caches the update and broadcasts to all clients.
     /// </summary>
     /// <param name="statusUpdate">Status update to broadcast</param>
-    public async Task SetStatus(StatusUpdateDto statusUpdate)
+    public async Task SetStatus(StatusUpdateViewModel statusUpdate)
     {
         _cachedStatus = statusUpdate;
         await Clients.All.SendAsync("statusUpdate", statusUpdate);
@@ -38,7 +38,7 @@ public class StatusHub : Hub
     /// Called by clients to get initial cached status on connection.
     /// </summary>
     /// <returns>The most recent status update</returns>
-    public StatusUpdateDto GetCachedStatus()
+    public StatusUpdateViewModel GetCachedStatus()
     {
         return _cachedStatus;
     }
@@ -47,7 +47,7 @@ public class StatusHub : Hub
     /// Called by controllers/services to broadcast search updates.
     /// </summary>
     /// <param name="searchUpdate">Search update to broadcast</param>
-    public async Task PublishSearchUpdate(SearchUpdateDto searchUpdate)
+    public async Task PublishSearchUpdate(SearchUpdateViewModel searchUpdate)
     {
         await Clients.All.SendAsync("searchUpdate", searchUpdate);
         _logger.LogDebug("Search update published: ID={Id}, Status={Status}", searchUpdate.Id, searchUpdate.Status);

NEW/src/JdeScoping.Api/Services/SearchNotificationService.cs

@@ -1,7 +1,7 @@
 using JdeScoping.Api.Hubs;
-using JdeScoping.Core.ApiContracts.SignalR;
 using JdeScoping.Core.Interfaces;
 using JdeScoping.Core.Models.Search;
+using JdeScoping.Core.ViewModels;
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.Extensions.Logging;
 
@@ -34,7 +34,7 @@ public class SearchNotificationService : ISearchNotificationService
     {
         try
         {
-            var update = SearchUpdateDto.FromSearch(search);
+            var update = SearchUpdateViewModel.FromSearch(search);
             await _hubContext.Clients.All.SendAsync("searchUpdate", update, ct);
             _logger.LogDebug(
                 "Search update notification sent: Id={SearchId}, Status={Status}",
@@ -56,7 +56,7 @@ public class SearchNotificationService : ISearchNotificationService
     {
         try
         {
-            var update = StatusUpdateDto.Create(status);
+            var update = StatusUpdateViewModel.Create(status);
             await _hubContext.Clients.All.SendAsync("statusUpdate", update, ct);
             _logger.LogDebug("Status notification sent: {Status}", status);
         }