- Replaced explicit envelope and receiver expression filters with a single `.Where(request)` call.
- Removed redundant checks for null and empty values in handler.
- Updated using statements to include `EnvelopeGenerator.Application.Extensions`.
- Maintains the same functionality while reducing code complexity.
- Introduced extension methods on IQueryable<TEntity> to filter entities
by Envelope (Id or Uuid) and Receiver (Id, EmailAddress, or Signature).
- Throws BadRequestException if no valid identifier is provided when notnull = true.
- Improves query handling consistency across application layer.
- Introduced private backing field `_key` for Key property
- Removed dynamic recomputation from Envelope and Receiver
- Ensured Key is only set once during initialization
- Improved null handling and exception safety
- Extend CreateHistoryCommand to implement IRequest<long?>
- Introduce CreateHistoryCommandHandler to handle command via IRepository<EnvelopeHistory>
- Implement async creation and verification of EnvelopeHistory records
- Replaced internal string properties with EnvelopeQuery and ReceiverQuery records
- Updated Key property to encode/decode using the new structured types
- Added overloaded IMediator extension methods IsSignedAsync for better usability
- Simplified ReceiverAlreadySignedQueryHandler to work with the new structure
- Introduced `SaveDocStatusAsync` extension method on IMediator to simplify saving document status
- Added `SignDocAsync` extension method as a shortcut for signing document status
- Refactored `SaveDocStatusCommand` usage to support new mediator extension
- Added support for filtering by Envelope.Id or Envelope.Uuid
- Added support for filtering by Receiver.Id, Receiver.EmailAddress, or Receiver.Signature
- Throw BadRequestException when required identifiers are missing
- Updated repository queries to combine envelope and receiver filters
- Feste NotFoundException durch generischen Ausnahmegenerator in ThrowIfNull-Methoden ersetzt.
- Neue Exceptions-Hilfsklasse für die Erstellung gängiger Ausnahmen (NotFound, BadRequest, Forbidden) hinzugefügt.
- Funktionalität der Then-Erweiterungsmethode unverändert beibehalten.
