update TWA Management v0.0.1

TWASys-App/DBModels/StorageArea.cs

@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace TWASys_App.DBModels
+{
+    public class StorageArea
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        public long IdStorage { get; set; }           // PK (AUTO_INCREMENT nếu DB đang để vậy)
+
+        public ulong? IdEmp { get; set; } = null;     // FK -> Emp (nếu có)
+
+       
+        public DateTime CreateDate { get; set; } = DateTime.UtcNow;
+
+        public double TotalSize { get; set; } = 0;    // map FLOAT MySQL -> double
+
+        public int Status { get; set; } = 0;
+    }
+}