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.Core/Models/Auth/LoginResultModel.cs

@@ -1,5 +1,3 @@
-using JdeScoping.Core.ApiContracts.Auth;
-
 namespace JdeScoping.Core.Models.Auth;
 
 /// <summary>

NEW/src/JdeScoping.Core/Models/Auth/UserInfoDto.cs

@@ -0,0 +1,52 @@
+namespace JdeScoping.Core.Models.Auth;
+
+/// <summary>
+/// API response DTO for authenticated user information.
+/// </summary>
+public record UserInfoDto
+{
+    /// <summary>
+    /// User's login username.
+    /// </summary>
+    public string Username { get; init; } = string.Empty;
+
+    /// <summary>
+    /// User's first name.
+    /// </summary>
+    public string FirstName { get; init; } = string.Empty;
+
+    /// <summary>
+    /// User's last name.
+    /// </summary>
+    public string LastName { get; init; } = string.Empty;
+
+    /// <summary>
+    /// User's display name (computed on server).
+    /// </summary>
+    public string DisplayName { get; init; } = string.Empty;
+
+    /// <summary>
+    /// User's organization title.
+    /// </summary>
+    public string Title { get; init; } = string.Empty;
+
+    /// <summary>
+    /// User's email address.
+    /// </summary>
+    public string EmailAddress { get; init; } = string.Empty;
+
+    /// <summary>
+    /// Creates a UserInfoDto from a UserInfo entity.
+    /// </summary>
+    /// <param name="userInfo">The UserInfo entity to convert.</param>
+    /// <returns>A new UserInfoDto instance.</returns>
+    public static UserInfoDto FromUserInfo(UserInfo userInfo) => new()
+    {
+        Username = userInfo.Username,
+        FirstName = userInfo.FirstName,
+        LastName = userInfo.LastName,
+        DisplayName = userInfo.DisplayName,
+        Title = userInfo.Title,
+        EmailAddress = userInfo.EmailAddress
+    };
+}

NEW/src/JdeScoping.Core/Models/Infrastructure/DataUpdateDto.cs

@@ -0,0 +1,25 @@
+namespace JdeScoping.Core.Models.Infrastructure;
+
+/// <summary>
+/// DTO for data refresh/sync status display.
+/// Aggregates record counts from multiple table updates into a single row.
+/// </summary>
+public class DataUpdateDto
+{
+    public DateTime StartDt { get; set; }
+    public DateTime? EndDt { get; set; }
+
+    public int BranchRecords { get; set; }
+    public int ProfitCenterRecords { get; set; }
+    public int WorkCenterRecords { get; set; }
+    public int OrgHierarchyRecords { get; set; }
+    public int StatusCodeRecords { get; set; }
+    public int UserRecords { get; set; }
+    public int ItemRecords { get; set; }
+    public int LotRecords { get; set; }
+    public int WorkOrderRecords { get; set; }
+    public int WorkOrderStepRecords { get; set; }
+    public int WorkOrderComponentRecords { get; set; }
+
+    public bool WasSuccessful { get; set; }
+}

NEW/src/JdeScoping.Core/Models/Pipelines/PipelineConfigDto.cs

@@ -0,0 +1,51 @@
+namespace JdeScoping.Core.Models.Pipelines;
+
+/// <summary>
+/// Pipeline configuration DTO for display.
+/// </summary>
+public record PipelineConfigDto(
+    string Name,
+    PipelineSourceDto Source,
+    PipelineDestinationDto Destination,
+    PipelineSchedulesDto Schedules,
+    int PreScriptCount,
+    int PostScriptCount,
+    List<string>? PreScripts,
+    List<string>? PostScripts);
+
+public record PipelineSourceDto(
+    string Connection,
+    string? QueryPreview,
+    string? MassQueryPreview,
+    string? Query,
+    string? MassQuery,
+    List<PipelineParameterDto> Parameters);
+
+public record PipelineParameterDto(
+    string Name,
+    string? Format,
+    string Source);
+
+public record PipelineDestinationDto(
+    string Table,
+    string OperationType,
+    List<string>? MatchColumns,
+    List<string>? ExcludeFromUpdate);
+
+public record PipelineSchedulesDto(
+    PipelineScheduleDto Mass,
+    PipelineScheduleDto Daily,
+    PipelineScheduleDto Hourly);
+
+public record PipelineScheduleDto(
+    bool Enabled,
+    int IntervalMinutes,
+    bool PrePurge,
+    bool ReIndex,
+    bool IntervalIsOverride,
+    bool PrePurgeIsOverride,
+    bool ReIndexIsOverride,
+    string? Query,
+    List<PipelineParameterDto> Parameters,
+    List<string>? PreScripts,
+    List<string>? PostScripts);

NEW/src/JdeScoping.Core/Models/Pipelines/PipelineExecutionDto.cs

@@ -0,0 +1,16 @@
+namespace JdeScoping.Core.Models.Pipelines;
+
+using JdeScoping.Core.Models.Enums;
+
+/// <summary>
+/// Pipeline execution history.
+/// </summary>
+public record PipelineExecutionsResponse(List<PipelineExecutionDto> Executions);
+
+public record PipelineExecutionDto(
+    UpdateTypes ScheduleType,
+    DateTime StartTime,
+    DateTime? EndTime,
+    TimeSpan? Duration,
+    long RecordCount,
+    bool WasSuccessful);

NEW/src/JdeScoping.Core/Models/Pipelines/PipelineListResponse.cs

@@ -0,0 +1,6 @@
+namespace JdeScoping.Core.Models.Pipelines;
+
+/// <summary>
+/// Response containing list of available pipeline names.
+/// </summary>
+public record PipelineListResponse(List<string> PipelineNames);

NEW/src/JdeScoping.Core/Models/Pipelines/PipelineStatusDto.cs

@@ -0,0 +1,17 @@
+namespace JdeScoping.Core.Models.Pipelines;
+
+using JdeScoping.Core.Models.Enums;
+
+/// <summary>
+/// Pipeline schedule status for each update type.
+/// </summary>
+public record PipelineStatusResponse(List<PipelineScheduleStatusDto> Statuses);
+
+public record PipelineScheduleStatusDto(
+    UpdateTypes ScheduleType,
+    DateTime? LastRun,
+    bool LastRunWasSuccessful,
+    DateTime? LastSuccessfulRun,
+    DateTime? NextRequiredRun,
+    bool IsOverdue,
+    int IntervalMinutes);