feature: Barcode/QR Cover Sheet System

VigilCareRecordsAPI/Models/Records/Batch/CreateBatchForm.cs

@@ -5,8 +5,10 @@ public class CreateBatchForm
     [Required]
     public IFormFile File { get; set; } = null!;
 
-    [Required]
-    public string BatchType { get; set; } = null!;
+    /// <summary>
+    /// Required unless <see cref="CoverSheetCode"/> is provided; cover sheet values override when both are sent.
+    /// </summary>
+    public string? BatchType { get; set; }
 
     public string? Track { get; set; }
 
@@ -15,5 +17,8 @@ public class CreateBatchForm
     public Guid? SupersedesBatchId { get; set; }
 
     public CreateBatchRequest ToMetadata() =>
-        new(BatchType, Track, PatientId, SupersedesBatchId);
+        new(BatchType ?? throw new InvalidOperationException("BatchType is required."),
+            Track, PatientId, SupersedesBatchId);
+
+    public string? CoverSheetCode { get; set; }
 }