TekH
67d0b07926
Extended `DocReceiverElementDto` to include an optional `Document` reference. Enhanced `ReadDocReceiverElementQuery` with `Id` and `IncludeDocument` properties for filtering and document inclusion. Updated `ReadDocReceiverElementQueryHandler` to handle new query properties, enabling filtering by `Id` and optionally including associated documents. Introduced `SignPdfByElementCommand` and its handler to support signing PDFs using either a provided `DocReceiverElementDto` or an `ElementId`. Added validation via `SignPdfByElementCommandValidator` to ensure proper usage. Refactored and added necessary `using` directives for new dependencies.