WIP

API/ROLAC.API/Services/Disbursement/ICheckPrintService.cs

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+using ROLAC.API.Entities;
+
+namespace ROLAC.API.Services.Disbursement;
+
+/// <summary>Data needed to render one printed check (header + ledger stub lines).</summary>
+public class CheckPrintModel
+{
+    public ChurchProfile Issuer  { get; set; } = null!;
+    public Check         Check   { get; set; } = null!;
+    public List<CheckLine> Lines { get; set; } = [];
+    public string        AmountInWords { get; set; } = "";
+
+    // Captured receipt e-signature, populated only when rendering a signed receipt.
+    public byte[]?       SignatureImage       { get; set; }
+    public string        SignatureContentType { get; set; } = "image/png";
+}
+
+public interface ICheckPrintService
+{
+    /// <summary>Renders the 8.5"x11" check (check + two ledger stubs) to a PDF stream.</summary>
+    Task<Stream> RenderPdfAsync(CheckPrintModel model);
+
+    /// <summary>
+    /// Renders a receipt PDF acknowledging a signed check: check info, the disbursement
+    /// detail lines, and the embedded e-signature image with the signer name and timestamp.
+    /// </summary>
+    Task<Stream> RenderReceiptPdfAsync(CheckPrintModel model);
+}