feat(ReadHistoryQuery): enhance ReadHistoryQuery to support Envelope object and UUID

- Replace nullable `OnlyLast` with non-nullable default `true`
- Support filtering by Envelope object (Id or Uuid) in addition to deprecated EnvelopeId
- Throw `BadRequestException` if no valid Envelope reference is provided
- Preserve status filtering and ordering for latest history entries

EnvelopeGenerator.Application/Histories/Queries/HistoryQueryBase.cs

@@ -1,4 +1,5 @@
-using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Application.Common.Query;
+using EnvelopeGenerator.Domain.Constants;
 using System.ComponentModel.DataAnnotations;
 
 namespace EnvelopeGenerator.Application.Histories.Queries;
@@ -12,11 +13,16 @@ public record HistoryQueryBase
     /// <summary>
     /// Die eindeutige Kennung des Umschlags.
     /// </summary>
-    [Required]
+    [Obsolete("Use Envelope property")]
-    public int EnvelopeId { get; set; }
+    public int? EnvelopeId { get; set; }
 
     /// <summary>
     /// Der Include des Umschlags, der abgefragt werden soll. Kann optional angegeben werden, um die Ergebnisse zu filtern.
     /// </summary>
     public EnvelopeStatus? Status { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public EnvelopeQueryBase? Envelope { get; set; }
 }

EnvelopeGenerator.Application/Histories/Queries/ReadHistoryQuery.cs

@@ -17,7 +17,7 @@ public record ReadHistoryQuery : HistoryQueryBase, IRequest<IEnumerable<HistoryD
     /// <summary>
     /// Abfrage zur Steuerung, ob nur der aktuelle Include oder der gesamte Datensatz zurückgegeben wird.
     /// </summary>
-    public bool? OnlyLast { get; init; } = true;
+    public bool OnlyLast { get; init; } = true;
 }
 
 /// <summary>
@@ -49,10 +49,25 @@ public class ReadHistoryQueryHandler : IRequestHandler<ReadHistoryQuery, IEnumer
     /// <exception cref="NotFoundException"></exception>
     public async Task<IEnumerable<HistoryDto>> Handle(ReadHistoryQuery request, CancellationToken cancel = default)
     {
-        var query = _repo.Where(h => h.EnvelopeId == request.EnvelopeId);
+        var query = _repo.Query;
+
+        if (request.Envelope?.Id is int envId)
+            query = query.Where(e => e.Id == envId);
+        else if (request.Envelope?.Uuid is string uuid)
+            query = query.Where(e => e.Envelope!.Uuid == uuid);
+#pragma warning disable CS0618 // Type or member is obsolete
+        else if (request.EnvelopeId is not null)
+            query = query.Where(h => h.EnvelopeId == request.EnvelopeId);
+#pragma warning restore CS0618 // Type or member is obsolete
+        else
+            throw new BadRequestException("Invalid request: An Envelope object or a valid EnvelopeId/UUID must be supplied.");
+
         if (request.Status is not null)
             query = query.Where(h => h.Status == request.Status);
 
+        if (request.OnlyLast)
+            query = query.OrderByDescending(x => x.AddedWhen);
+
         var hists = await query.ToListAsync(cancel);
         return _mapper.Map<List<HistoryDto>>(hists);
     }

EnvelopeGenerator.Web/Controllers/AnnotationController.cs

@@ -4,6 +4,7 @@ using EnvelopeGenerator.Application.Common.Extensions;
 using EnvelopeGenerator.Application.Common.Interfaces.Services;
 using EnvelopeGenerator.Application.Common.Notifications.DocSigned;
 using EnvelopeGenerator.Application.EnvelopeReceivers.Queries;
+using EnvelopeGenerator.Application.Histories.Queries;
 using EnvelopeGenerator.Domain.Constants;
 using EnvelopeGenerator.Web.Extensions;
 using MediatR;
@@ -59,6 +60,8 @@ public class AnnotationController : ControllerBase
         // Again check if receiver has already signed
         if (await _mediator.IsSignedAsync(uuid, signature, cancel))
             return Problem(statusCode: 403);
+        else if (await _mediator.AnyHistoryAsync())
+            return Problem(statusCode: 200);
 
         var docSignedNotification = await _mediator
             .ReadEnvelopeReceiverAsync(uuid, signature, cancel)