diff --git a/Data.SeaHavenIndustries/Enums/WorkOrderEnums.cs b/Data.SeaHavenIndustries/Enums/WorkOrderEnums.cs
index 9c2e454..955b277 100644
--- a/Data.SeaHavenIndustries/Enums/WorkOrderEnums.cs
+++ b/Data.SeaHavenIndustries/Enums/WorkOrderEnums.cs
@@ -1,5 +1,6 @@
 namespace Data.SeaHavenIndustries.Enums
 {
+    /// <summary>Legacy enum — prefer LifecycleStatus for board operations.</summary>
     public enum WorkOrderStatus
     {
         Open = 1,
@@ -9,6 +10,72 @@ namespace Data.SeaHavenIndustries.Enums
         OnHold = 5
     }
 
+    /// <summary>10 operational lifecycle values aligned with SHOC board.</summary>
+    public enum LifecycleStatus
+    {
+        Incomplete = 1,
+        Scheduled = 2,
+        InProgress = 3,
+        Complete = 4,
+        Canceled = 5,
+        OnHold = 6,
+        PendingVendor = 7,
+        PendingApproval = 8,
+        NeedsReview = 9,
+        Closed = 10
+    }
+
+    public enum WorkOrderType
+    {
+        PO = 1,
+        PM = 2,
+        Emergency = 3,
+        Project = 4,
+        Inspection = 5,
+        Other = 99
+    }
+
+    public enum DocStatus
+    {
+        Yes = 1,
+        No = 2,
+        NotNeeded = 3
+    }
+
+    [Flags]
+    public enum OperationalFlags
+    {
+        None = 0,
+        PastDue = 1
+    }
+
+    public enum AuditEventType
+    {
+        Manual = 1,
+        System = 2,
+        Sync = 3,
+        Vendor = 4
+    }
+
+    public enum AuditActorType
+    {
+        Dispatcher = 1,
+        Vendor = 2,
+        System = 3,
+        Sync = 4
+    }
+
+    public enum AuditActionType
+    {
+        FieldChanged = 1,
+        StatusChanged = 2,
+        AssignmentChanged = 3,
+        WeekRolled = 4,
+        SyncRejected = 5,
+        Create = 6,
+        Delete = 7
+    }
+
     public enum WorkOrderPriority
     {
         Low = 1,
@@ -89,4 +156,12 @@ namespace Data.SeaHavenIndustries.Enums
         Contact = 4,
         Asset = 5
     }
+
+    public enum WorkOrderMediaCategory
+    {
+        Before = 1,
+        After = 2,
+        Extra = 3,
+        Completion = 4
+    }
 }
diff --git a/Data.SeaHavenIndustries/Models/Dispatch.cs b/Data.SeaHavenIndustries/Models/Dispatch.cs
index 869fedf..831cc17 100644
--- a/Data.SeaHavenIndustries/Models/Dispatch.cs
+++ b/Data.SeaHavenIndustries/Models/Dispatch.cs
@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Data.SeaHavenIndustries
@@ -26,6 +27,10 @@ namespace Data.SeaHavenIndustries
         public string? AcceptToken { get; set; }
         public string? VerifiedBy { get; set; }
         public DateTime? VerifiedAt { get; set; }
+
+        [Timestamp]
+        public byte[]? RowVersion { get; set; }
+
         public ICollection<Comments>? Comments { get; set; }
         public ICollection<DispatchWorkOrder>? DispatchWorkOrders { get; set; }
         public ICollection<DispatchChecklistItem>? ChecklistItems { get; set; }
diff --git a/Data.SeaHavenIndustries/Models/WorkOrderAuditLog.cs b/Data.SeaHavenIndustries/Models/WorkOrderAuditLog.cs
index 0b2572f..b3fbb7d 100644
--- a/Data.SeaHavenIndustries/Models/WorkOrderAuditLog.cs
+++ b/Data.SeaHavenIndustries/Models/WorkOrderAuditLog.cs
@@ -15,6 +15,10 @@ namespace Data.SeaHavenIndustries
         public string? OldValue { get; set; }
         public string? NewValue { get; set; }
         public string? Action { get; set; }
+        public string? EventType { get; set; }
+        public string? ActorType { get; set; }
+        public int? DispatchId { get; set; }
+        public string? CorrelationId { get; set; }
         public DateTime CreatedAt { get; set; }
     }
 }
diff --git a/Data.SeaHavenIndustries/Models/WorkOrderContacts.cs b/Data.SeaHavenIndustries/Models/WorkOrderContacts.cs
index 96e89eb..52919ea 100644
--- a/Data.SeaHavenIndustries/Models/WorkOrderContacts.cs
+++ b/Data.SeaHavenIndustries/Models/WorkOrderContacts.cs
@@ -12,6 +12,6 @@ namespace Data.SeaHavenIndustries
         public int? WorkorderId { get; set; }
         [ForeignKey(nameof(WorkorderId))]
         public virtual WorkOrder? WorkOrder { get; set; }
-
+        public string? Notes { get; set; }
     }
 }
diff --git a/Data.SeaHavenIndustries/Models/WorkOrderFieldLock.cs b/Data.SeaHavenIndustries/Models/WorkOrderFieldLock.cs
new file mode 100644
index 0000000..c749159
--- /dev/null
+++ b/Data.SeaHavenIndustries/Models/WorkOrderFieldLock.cs
@@ -0,0 +1,18 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Data.SeaHavenIndustries
+{
+    /// <summary>
+    /// ManualEditFlag — blocks Sync overwrite after first SHOC edit per field.
+    /// </summary>
+    public class WorkOrderFieldLock
+    {
+        public int Id { get; set; }
+        public int WorkOrderId { get; set; }
+        [ForeignKey(nameof(WorkOrderId))]
+        public virtual WorkOrder? WorkOrder { get; set; }
+        public string FieldName { get; set; } = "";
+        public DateTime LockedAt { get; set; }
+        public string? LockedByUserId { get; set; }
+    }
+}
diff --git a/Data.SeaHavenIndustries/Models/WorkerOrder.cs b/Data.SeaHavenIndustries/Models/WorkerOrder.cs
index 6d3692e..5bc5d4a 100644
--- a/Data.SeaHavenIndustries/Models/WorkerOrder.cs
+++ b/Data.SeaHavenIndustries/Models/WorkerOrder.cs
@@ -1,11 +1,16 @@
-using System;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using static System.Runtime.InteropServices.JavaScript.JSType;
+using Data.SeaHavenIndustries.Enums;
 
 namespace Data.SeaHavenIndustries
 {
+    /// <summary>
+    /// Work Order aggregate root. Domain slices (Core, Scheduling, Tracking, Analytics, Completion)
+    /// are persisted as flat columns on workOrders for Fase 0 backward compatibility.
+    /// </summary>
     public class WorkOrder : FullAuditEntity
     {
+        // --- Core slice ---
         public string? InternalWONumber { get; set; }
         public string? ExternalWorkOrderId { get; set; }
         public string? WorkerOrderNumber { get; set; }
@@ -15,34 +20,57 @@ namespace Data.SeaHavenIndustries
         public string? SiteCode { get; set; }
         public string? Building { get; set; }
         public string? Severity { get; set; }
-        public DateTime? DateReported { get; set; }
+        public DateTime? DueDate { get; set; }
+        public string? AssignTo { get; set; }
+        [ForeignKey(nameof(AssignTo))]
+        public virtual ApplicationUser? AssignToUser { get; set; }
+        public int? LocationId { get; set; }
+        [ForeignKey(nameof(LocationId))]
+        public virtual Locations? Locations { get; set; }
+        public LifecycleStatus? LifecycleStatus { get; set; }
+        public string? LegacyStatus { get; set; }
+        public WorkOrderType? WorkOrderType { get; set; }
+        public int? PrimaryDispatchId { get; set; }
+        [ForeignKey(nameof(PrimaryDispatchId))]
+        public virtual Dispatch? PrimaryDispatch { get; set; }
+
+        // --- Scheduling slice ---
+        public DateTime? ScheduledDate { get; set; }
         public DateTime? ScheduledStart { get; set; }
+        public DateTime? ScheduledEnd { get; set; }
+        public DateOnly? TargetWeek { get; set; }
+        public bool? ScheduleWeekOnly { get; set; }
+
+        // --- Tracking slice (set-once) ---
+        public DateOnly? OriginalWeek { get; set; }
+        public DateOnly? OriginalDate { get; set; }
+
+        // --- Analytics slice ---
+        public int RescheduleCount { get; set; }
+        public int CarriedOver { get; set; }
+        public OperationalFlags OperationalFlags { get; set; }
+
+        // --- Completion slice ---
+        public DocStatus? DocStatus { get; set; }
+
+        // --- Legacy SQL columns (drift reconciliation) ---
+        public string? AvettaTask { get; set; }
+        public DateOnly? AssignDate { get; set; }
+
+        // --- Legacy fields (retained for Blazor / coexistence) ---
+        public DateTime? DateReported { get; set; }
         public string? SourceEmailS3Key { get; set; }
         public string? Problem { get; set; }
         public string? Trade { get; set; }
         public string? SubTrade { get; set; }
         public decimal? VendorNTE { get; set; }
-        public DateTime? ScheduledDate { get; set; }
         public DateTime? CompletedDate { get; set; }
         public string? Source { get; set; }
         public bool? istemplate { get; set; }
         public string? PO { get; set; }
         public string? TT { get; set; }
-        //public int? ContactId { get; set; }
-        //[ForeignKey(nameof(ContactId))]
-        //public virtual Contacts? POC { get; set; }
-        public string? AssignTo { get; set; }
-        [ForeignKey(nameof(AssignTo))]
-        public virtual ApplicationUser? AssignToUser { get; set; }
-        public DateTime? DueDate { get; set; }
         public string? Priority { get; set; }
         public string? Status { get; set; }
-        public int? LocationId { get; set; }
-        [ForeignKey(nameof(LocationId))]
-        public virtual Locations? Locations { get; set; }
-        //public int? CategoryId { get; set; }
-        //[ForeignKey(nameof(CategoryId))]
-        //public virtual Category? Category { get; set; }
         public string? Attachments { get; set; }
         public string? BeforPhotoIssue { get; set; }
         public string? BeforPhotoAttachment { get; set; }
@@ -51,11 +79,16 @@ namespace Data.SeaHavenIndustries
         public string? SignOffName { get; set; }
         public string? SignOffAttachment { get; set; }
         public string? SignOffSignature { get; set; }
+
+        [Timestamp]
+        public byte[]? RowVersion { get; set; }
+
         public ICollection<Comments>? Comments { get; set; }
         public ICollection<Quotes>? Quotes { get; set; }
         public ICollection<WorkOrderContacts>? WorkOrderContacts { get; set; }
         public ICollection<WorkOrderAttachments>? workOrderAttachments { get; set; }
         public ICollection<WorkOrderCategories>? WorkOrderCategories { get; set; }
         public ICollection<Dispatch>? Dispatches { get; set; }
+        public ICollection<WorkOrderFieldLock>? FieldLocks { get; set; }
     }
 }