- Changed `BurnPdfCommand` from empty class to a `record` with properties: `SourceBuffer`, `InstantJSONList`, `EnvelopeId`.
- Updated `BurnPdfCommandHandler` to implement `IRequestHandler<BurnPdfCommand, byte[]>`.
- Modified `Handle` method to be async and use the `request` data to return PDF bytes.
- Removed obsolete `BurnPdfCommand` class and updated related logic accordingly.
- Added System.Text.Json.Serialization namespace and [JsonIgnore] attributes to Top and Left properties in Signature entity for .NET builds
- Applied null-forgiving operator (!) and null-coalescing defaults for frame.X and frame.Y in BurnPdfCommandHandler
- Improved runtime safety and prevented unintended JSON serialization of computed properties
Added a new nullable ReceiverSignature property to the RemoveSignatureNotification record
to support handling receiver-specific signature removal events.
Added full implementation for CreateAnnotationCommand and its handler:
- Introduced `PSPDFKitInstantJSON` property to the command
- Injected repositories for `Signature` and `Annotation`
- Implemented query filtering for Envelope and Receiver
- Added annotation creation from parsed PSPDFKit JSON
- Created helper method `ParsePSPDFKitInstantJSON` for JSON parsing
