Refactor code structure for int in alll ids instesd defult using long

Backend/ERPCore/Domain/Entities/AuditLog.cs

@@ -12,10 +12,10 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class AuditLog
 {
-    public long AuditId { get; set; }
-    public long UserId { get; set; }
+    public int AuditId { get; set; }
+    public int UserId { get; set; }
     public string EntityType { get; set; } = string.Empty;
-    public long EntityId { get; set; }
+    public int EntityId { get; set; }
     public AuditAction Action { get; set; }
     /// <summary>JSON change set: field→value (create/delete) or field→{old,new} (update).</summary>
     public string ChangeSet { get; set; } = "{}";

Backend/ERPCore/Domain/Entities/Batch.cs

@@ -6,9 +6,9 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Batch
 {
-    public long BatchId { get; set; }
+    public int BatchId { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public string BatchNo { get; set; } = string.Empty;

Backend/ERPCore/Domain/Entities/Bin.cs

@@ -6,9 +6,9 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Bin
 {
-    public long BinId { get; set; }
+    public int BinId { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
     public string Code { get; set; } = string.Empty;

Backend/ERPCore/Domain/Entities/Category.cs

@@ -6,10 +6,10 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Category
 {
-    public long CategoryId { get; set; }
+    public int CategoryId { get; set; }
     public string Name { get; set; } = string.Empty;
 
-    public long? ParentId { get; set; }
+    public int? ParentId { get; set; }
     public Category? Parent { get; set; }
     public ICollection<Category> Children { get; set; } = new List<Category>();
 }

Backend/ERPCore/Domain/Entities/Grn.cs

@@ -10,21 +10,21 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Grn
 {
-    public long GrnId { get; set; }
+    public int GrnId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long? PoId { get; set; }
+    public int? PoId { get; set; }
     public PurchaseOrder? PurchaseOrder { get; set; }
 
-    public long VendorId { get; set; }
+    public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
     public GrnStatus Status { get; set; } = GrnStatus.Draft;
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/GrnLine.cs

@@ -10,24 +10,24 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class GrnLine
 {
-    public long GrnLineId { get; set; }
+    public int GrnLineId { get; set; }
 
-    public long GrnId { get; set; }
+    public int GrnId { get; set; }
     public Grn? Grn { get; set; }
 
-    public long? PoLineId { get; set; }
+    public int? PoLineId { get; set; }
     public PoLine? PoLine { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long UomId { get; set; }
+    public int UomId { get; set; }
     public Uom? Uom { get; set; }
 
-    public long? BinId { get; set; }
+    public int? BinId { get; set; }
     public Bin? Bin { get; set; }
 
-    public long? BatchId { get; set; }
+    public int? BatchId { get; set; }
     public Batch? Batch { get; set; }
 
     public decimal Qty { get; set; }

Backend/ERPCore/Domain/Entities/Item.cs

@@ -9,18 +9,18 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Item
 {
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public string Sku { get; set; } = string.Empty;
     public string Name { get; set; } = string.Empty;
     public string? Description { get; set; }
 
-    public long CategoryId { get; set; }
+    public int CategoryId { get; set; }
     public Category? Category { get; set; }
 
-    public long BaseUomId { get; set; }
+    public int BaseUomId { get; set; }
     public Uom? BaseUom { get; set; }
 
-    public long? DefaultVendorId { get; set; }
+    public int? DefaultVendorId { get; set; }
     public Vendor? DefaultVendor { get; set; }
 
     public ItemType ItemType { get; set; }

Backend/ERPCore/Domain/Entities/ItemReorder.cs

@@ -7,12 +7,12 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class ItemReorder
 {
-    public long ReorderId { get; set; }
+    public int ReorderId { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
     public decimal ReorderPoint { get; set; }

Backend/ERPCore/Domain/Entities/JournalEntryStub.cs

@@ -9,9 +9,9 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class JournalEntryStub
 {
-    public long JournalId { get; set; }
+    public int JournalId { get; set; }
     public string SourceDocType { get; set; } = string.Empty;
-    public long SourceDocId { get; set; }
+    public int SourceDocId { get; set; }
     public string DebitAccount { get; set; } = string.Empty;
     public string CreditAccount { get; set; } = string.Empty;
     public decimal Amount { get; set; }

Backend/ERPCore/Domain/Entities/NumberSequence.cs

@@ -8,8 +8,8 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class NumberSequence
 {
-    public long SequenceId { get; set; }
+    public int SequenceId { get; set; }
     public string DocType { get; set; } = string.Empty;
     public int Year { get; set; }
-    public long LastNumber { get; set; }
+    public int LastNumber { get; set; }
 }

Backend/ERPCore/Domain/Entities/PoLine.cs

@@ -7,18 +7,18 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class PoLine
 {
-    public long PoLineId { get; set; }
+    public int PoLineId { get; set; }
 
-    public long PoId { get; set; }
+    public int PoId { get; set; }
     public PurchaseOrder? PurchaseOrder { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long UomId { get; set; }
+    public int UomId { get; set; }
     public Uom? Uom { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
     public decimal Qty { get; set; }

Backend/ERPCore/Domain/Entities/PurchaseOrder.cs

@@ -11,19 +11,19 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class PurchaseOrder
 {
-    public long PoId { get; set; }
+    public int PoId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long VendorId { get; set; }
+    public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
-    public long? RequisitionId { get; set; }
+    public int? RequisitionId { get; set; }
     public Requisition? Requisition { get; set; }
 
     public PurchaseOrderStatus Status { get; set; } = PurchaseOrderStatus.Draft;
     public bool ApprovalRequired { get; set; }
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/PurchaseReturn.cs

@@ -9,21 +9,21 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class PurchaseReturn
 {
-    public long ReturnId { get; set; }
+    public int ReturnId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long VendorId { get; set; }
+    public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
-    public long ReasonCodeId { get; set; }
+    public int ReasonCodeId { get; set; }
     public ReasonCode? ReasonCode { get; set; }
 
     public ReturnStatus Status { get; set; } = ReturnStatus.Posted;
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/PurchaseReturnLine.cs

@@ -6,15 +6,15 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class PurchaseReturnLine
 {
-    public long ReturnLineId { get; set; }
+    public int ReturnLineId { get; set; }
 
-    public long ReturnId { get; set; }
+    public int ReturnId { get; set; }
     public PurchaseReturn? Return { get; set; }
 
-    public long? GrnLineId { get; set; }
+    public int? GrnLineId { get; set; }
     public GrnLine? GrnLine { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public decimal Qty { get; set; }

Backend/ERPCore/Domain/Entities/ReasonCode.cs

@@ -8,7 +8,7 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class ReasonCode
 {
-    public long ReasonCodeId { get; set; }
+    public int ReasonCodeId { get; set; }
     public string Code { get; set; } = string.Empty;
     public string Description { get; set; } = string.Empty;
     public ReasonContext Context { get; set; }

Backend/ERPCore/Domain/Entities/Requisition.cs

@@ -8,10 +8,10 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Requisition
 {
-    public long RequisitionId { get; set; }
+    public int RequisitionId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long RequestedBy { get; set; }
+    public int RequestedBy { get; set; }
     public User? Requester { get; set; }
 
     public RequisitionStatus Status { get; set; } = RequisitionStatus.Draft;

Backend/ERPCore/Domain/Entities/RequisitionLine.cs

@@ -3,12 +3,12 @@ namespace ERPCore.Domain.Entities;
 /// <summary>Requisition line (FR-PROC-01). Model: docs/10 Part C.2.</summary>
 public class RequisitionLine
 {
-    public long ReqLineId { get; set; }
+    public int ReqLineId { get; set; }
 
-    public long RequisitionId { get; set; }
+    public int RequisitionId { get; set; }
     public Requisition? Requisition { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public decimal Qty { get; set; }

Backend/ERPCore/Domain/Entities/Rfq.cs

@@ -8,10 +8,10 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Rfq
 {
-    public long RfqId { get; set; }
+    public int RfqId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long RequisitionId { get; set; }
+    public int RequisitionId { get; set; }
     public Requisition? Requisition { get; set; }
 
     public RfqStatus Status { get; set; } = RfqStatus.Open;

Backend/ERPCore/Domain/Entities/RfqLine.cs

@@ -3,12 +3,12 @@ namespace ERPCore.Domain.Entities;
 /// <summary>RFQ line — an item + quantity being quoted (FR-PROC-02). Model: docs/10 Part C.2.</summary>
 public class RfqLine
 {
-    public long RfqLineId { get; set; }
+    public int RfqLineId { get; set; }
 
-    public long RfqId { get; set; }
+    public int RfqId { get; set; }
     public Rfq? Rfq { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public decimal Qty { get; set; }

Backend/ERPCore/Domain/Entities/Serial.cs

@@ -6,9 +6,9 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Serial
 {
-    public long SerialId { get; set; }
+    public int SerialId { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public string SerialNo { get; set; } = string.Empty;

Backend/ERPCore/Domain/Entities/StockAdjustment.cs

@@ -10,18 +10,18 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockAdjustment
 {
-    public long AdjustmentId { get; set; }
+    public int AdjustmentId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
-    public long ReasonCodeId { get; set; }
+    public int ReasonCodeId { get; set; }
     public ReasonCode? ReasonCode { get; set; }
 
     public AdjustmentStatus Status { get; set; } = AdjustmentStatus.Posted;
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/StockAdjustmentLine.cs

@@ -7,17 +7,17 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockAdjustmentLine
 {
-    public long AdjLineId { get; set; }
+    public int AdjLineId { get; set; }
 
-    public long AdjustmentId { get; set; }
+    public int AdjustmentId { get; set; }
     public StockAdjustment? Adjustment { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long? BinId { get; set; }
-    public long? BatchId { get; set; }
-    public long? SerialId { get; set; }
+    public int? BinId { get; set; }
+    public int? BatchId { get; set; }
+    public int? SerialId { get; set; }
 
     public decimal QtyDelta { get; set; }
 }

Backend/ERPCore/Domain/Entities/StockCount.cs

@@ -10,16 +10,16 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockCount
 {
-    public long CountId { get; set; }
+    public int CountId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
     public CountType CountType { get; set; }
     public CountStatus Status { get; set; } = CountStatus.Draft;
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/StockCountLine.cs

@@ -6,15 +6,15 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockCountLine
 {
-    public long CountLineId { get; set; }
+    public int CountLineId { get; set; }
 
-    public long CountId { get; set; }
+    public int CountId { get; set; }
     public StockCount? Count { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long? BinId { get; set; }
+    public int? BinId { get; set; }
 
     public decimal SystemQty { get; set; }
     public decimal? CountedQty { get; set; }

Backend/ERPCore/Domain/Entities/StockLayer.cs

@@ -8,22 +8,22 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockLayer
 {
-    public long LayerId { get; set; }
+    public int LayerId { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public Warehouse? Warehouse { get; set; }
 
-    public long? BatchId { get; set; }
+    public int? BatchId { get; set; }
     public Batch? Batch { get; set; }
 
-    public long? SerialId { get; set; }
+    public int? SerialId { get; set; }
     public Serial? Serial { get; set; }
 
     /// <summary>Originating GRN line — carries the inspection hold status for this stock.</summary>
-    public long? GrnLineId { get; set; }
+    public int? GrnLineId { get; set; }
     public GrnLine? GrnLine { get; set; }
 
     public decimal QtyReceived { get; set; }

Backend/ERPCore/Domain/Entities/StockLedger.cs

@@ -11,14 +11,14 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockLedger
 {
-    public long LedgerId { get; set; }
+    public int LedgerId { get; set; }
 
-    public long ItemId { get; set; }
-    public long WarehouseId { get; set; }
-    public long? BinId { get; set; }
-    public long? BatchId { get; set; }
-    public long? SerialId { get; set; }
-    public long UserId { get; set; }
+    public int ItemId { get; set; }
+    public int WarehouseId { get; set; }
+    public int? BinId { get; set; }
+    public int? BatchId { get; set; }
+    public int? SerialId { get; set; }
+    public int UserId { get; set; }
 
     public Direction Direction { get; set; }
     public decimal QtyBase { get; set; }
@@ -27,6 +27,6 @@ public class StockLedger
     public decimal RunningBalance { get; set; }
 
     public string SourceDocType { get; set; } = string.Empty;
-    public long SourceDocId { get; set; }
+    public int SourceDocId { get; set; }
     public DateTime CreatedAt { get; set; }
 }

Backend/ERPCore/Domain/Entities/StockTransfer.cs

@@ -10,18 +10,18 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockTransfer
 {
-    public long TransferId { get; set; }
+    public int TransferId { get; set; }
     public string DocNo { get; set; } = string.Empty;
 
-    public long SrcWarehouseId { get; set; }
+    public int SrcWarehouseId { get; set; }
     public Warehouse? SrcWarehouse { get; set; }
 
-    public long DestWarehouseId { get; set; }
+    public int DestWarehouseId { get; set; }
     public Warehouse? DestWarehouse { get; set; }
 
     public TransferStatus Status { get; set; } = TransferStatus.Draft;
 
-    public long CreatedBy { get; set; }
+    public int CreatedBy { get; set; }
     public User? Creator { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/StockTransferLine.cs

@@ -12,18 +12,18 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class StockTransferLine
 {
-    public long TransferLineId { get; set; }
+    public int TransferLineId { get; set; }
 
-    public long TransferId { get; set; }
+    public int TransferId { get; set; }
     public StockTransfer? Transfer { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long? SrcBinId { get; set; }
-    public long? DestBinId { get; set; }
-    public long? BatchId { get; set; }
-    public long? SerialId { get; set; }
+    public int? SrcBinId { get; set; }
+    public int? DestBinId { get; set; }
+    public int? BatchId { get; set; }
+    public int? SerialId { get; set; }
 
     public decimal Qty { get; set; }
 

Backend/ERPCore/Domain/Entities/Uom.cs

@@ -6,6 +6,6 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Uom
 {
-    public long UomId { get; set; }
+    public int UomId { get; set; }
     public string Name { get; set; } = string.Empty;
 }

Backend/ERPCore/Domain/Entities/UomConversion.cs

@@ -7,15 +7,15 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class UomConversion
 {
-    public long ConversionId { get; set; }
+    public int ConversionId { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
-    public long FromUomId { get; set; }
+    public int FromUomId { get; set; }
     public Uom? FromUom { get; set; }
 
-    public long ToUomId { get; set; }
+    public int ToUomId { get; set; }
     public Uom? ToUom { get; set; }
 
     public decimal Factor { get; set; }

Backend/ERPCore/Domain/Entities/User.cs

@@ -4,7 +4,7 @@ namespace ERPCore.Domain.Entities;
 
 /// <summary>
 /// Application user (FR-X-01) — a **local shadow/projection** of an AuthHex identity.
-/// The local <see cref="UserId"/> (long) is what every `createdBy`/`requestedBy`/
+/// The local <see cref="UserId"/> (int) is what every `createdBy`/`requestedBy`/
 /// audit/ledger FK references; <see cref="AuthUserId"/> maps it to the AuthHex
 /// <c>UserId</c> (GUID) and is JIT-provisioned on first authenticated request
 /// (docs/10 A.4/C.7). A seeded <c>system</c> user (id 1, null AuthUserId) is the
@@ -13,9 +13,9 @@ namespace ERPCore.Domain.Entities;
 public class User
 {
     /// <summary>Seeded fallback actor for unauthenticated/system operations.</summary>
-    public const long SystemUserId = 1;
+    public const int SystemUserId = 1;
 
-    public long UserId { get; set; }
+    public int UserId { get; set; }
     public string Username { get; set; } = string.Empty;
     public string DisplayName { get; set; } = string.Empty;
     public EntityStatus Status { get; set; } = EntityStatus.Active;

Backend/ERPCore/Domain/Entities/Vendor.cs

@@ -9,7 +9,7 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Vendor
 {
-    public long VendorId { get; set; }
+    public int VendorId { get; set; }
     public string Code { get; set; } = string.Empty;
     public string Name { get; set; } = string.Empty;
     public string? Terms { get; set; }

Backend/ERPCore/Domain/Entities/VendorQuotation.cs

@@ -12,12 +12,12 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class VendorQuotation
 {
-    public long QuotationId { get; set; }
+    public int QuotationId { get; set; }
 
-    public long RfqId { get; set; }
+    public int RfqId { get; set; }
     public Rfq? Rfq { get; set; }
 
-    public long VendorId { get; set; }
+    public int VendorId { get; set; }
     public Vendor? Vendor { get; set; }
 
     public DateTime CreatedAt { get; set; }

Backend/ERPCore/Domain/Entities/VendorQuotationLine.cs

@@ -3,12 +3,12 @@ namespace ERPCore.Domain.Entities;
 /// <summary>Per-item quoted price and lead time within a <see cref="VendorQuotation"/> (docs/11 §3.2).</summary>
 public class VendorQuotationLine
 {
-    public long QuotationLineId { get; set; }
+    public int QuotationLineId { get; set; }
 
-    public long QuotationId { get; set; }
+    public int QuotationId { get; set; }
     public VendorQuotation? Quotation { get; set; }
 
-    public long ItemId { get; set; }
+    public int ItemId { get; set; }
     public Item? Item { get; set; }
 
     public decimal UnitPrice { get; set; }

Backend/ERPCore/Domain/Entities/Warehouse.cs

@@ -6,7 +6,7 @@ namespace ERPCore.Domain.Entities;
 /// </summary>
 public class Warehouse
 {
-    public long WarehouseId { get; set; }
+    public int WarehouseId { get; set; }
     public string Code { get; set; } = string.Empty;
     public string Name { get; set; } = string.Empty;