Refactor and optimize envelope handling

Refactored `ReadDocumentDetailsQueryHandler` to remove AutoMapper, improving performance by manually selecting necessary data. Simplified `SenderEditorPage.razor` by removing bootstrap logic and updating the UI for a more compact design. Streamlined envelope creation in `SenderPage.razor` by eliminating the bootstrap token. Updated styles in `envelope-viewer.css` for better alignment and readability.

EnvelopeGenerator.Application/Documents/Queries/ReadDocumentDetailsQuery.cs

@@ -1,5 +1,3 @@
-using AutoMapper;
-using AutoMapper.QueryableExtensions;
 using DigitalData.Core.Abstraction.Application.Repository;
 using EnvelopeGenerator.Application.Common.Dto;
 using EnvelopeGenerator.Domain.Entities;
@@ -21,12 +19,10 @@ public record ReadDocumentDetailsQuery(int EnvelopeId, int? UserId = null) : IRe
 public class ReadDocumentDetailsQueryHandler : IRequestHandler<ReadDocumentDetailsQuery, DocumentDetailsDto?>
 {
     private readonly IRepository<Document> _repo;
-    private readonly IMapper _mapper;
 
-    public ReadDocumentDetailsQueryHandler(IRepository<Document> repo, IMapper mapper)
+    public ReadDocumentDetailsQueryHandler(IRepository<Document> repo)
     {
         _repo = repo;
-        _mapper = mapper;
     }
 
     public async Task<DocumentDetailsDto?> Handle(ReadDocumentDetailsQuery query, CancellationToken cancel)
@@ -36,9 +32,71 @@ public class ReadDocumentDetailsQueryHandler : IRequestHandler<ReadDocumentDetai
         if (query.UserId is int userId)
             docQuery = docQuery.Where(doc => doc.Envelope.UserId == userId);
 
-        return await docQuery
+        // shortcut: manual select avoids AutoMapper ProjectTo pulling BYTE_DATA and the full navigation
+        // graph (Envelope → History → User etc.) which caused an extremely slow query (~87s).
+        // Annotations navigation is IEnumerable<T> on the entity (not ICollection<T>), so EF Core
+        // cannot translate it in a Select projection — we skip it entirely here; sender editor only
+        // needs element coordinates, not annotation payloads.
+        var raw = await docQuery
             .Where(d => d.EnvelopeId == query.EnvelopeId)
-            .ProjectTo<DocumentDetailsDto>(_mapper.ConfigurationProvider)
+            .Select(d => new
+            {
+                d.Id,
+                d.EnvelopeId,
+                d.AddedWhen,
+                Elements = d.Elements == null ? null : d.Elements.Select(e => new
+                {
+                    e.Id,
+                    e.DocumentId,
+                    e.ReceiverId,
+                    e.ElementType,
+                    e.X,
+                    e.Y,
+                    e.Width,
+                    e.Height,
+                    e.Page,
+                    e.Required,
+                    e.Tooltip,
+                    e.ReadOnly,
+                    e.AnnotationIndex,
+                    e.AddedWhen,
+                    e.ChangedWhen,
+                    e.FullName,
+                    e.Position,
+                    e.Place,
+                }).ToList()
+            })
             .FirstOrDefaultAsync(cancel);
+
+        if (raw is null)
+            return null;
+
+        return new DocumentDetailsDto
+        {
+            Id = raw.Id,
+            EnvelopeId = raw.EnvelopeId,
+            AddedWhen = raw.AddedWhen,
+            Elements = raw.Elements?.Select(e => new DocReceiverElementDto
+            {
+                Id = e.Id,
+                DocumentId = e.DocumentId,
+                ReceiverId = e.ReceiverId,
+                ElementType = e.ElementType,
+                X = e.X,
+                Y = e.Y,
+                Width = e.Width,
+                Height = e.Height,
+                Page = e.Page,
+                Required = e.Required,
+                Tooltip = e.Tooltip,
+                ReadOnly = e.ReadOnly,
+                AnnotationIndex = e.AnnotationIndex,
+                AddedWhen = e.AddedWhen,
+                ChangedWhen = e.ChangedWhen,
+                FullName = e.FullName,
+                Position = e.Position,
+                Place = e.Place,
+            })
+        };
     }
 }