Added functionality to render captured signatures onto a PDF document using the PdfSharp library. Introduced a new `_signatures` field to store signature data and updated `OnInitializedAsync` to fetch and process signatures. Implemented the `DrawSignaturesOnPdf` method to overlay signature images, separator lines, and signer details (name, position, place, date) onto the PDF. Added a helper method `DataUrlToBytes` for decoding Base64-encoded signature images. Defined constants for layout and styling to ensure consistent rendering. Updated `Dispose` to clean up resources.