fix: Replace CreateBitmap with CreateDXBitmap for cross-platform compatibility

- Replace System.Drawing.Bitmap with DevExpress.Drawing.DXBitmap

- Fix CA1416 warnings (Windows-specific API usage)

- Fix CS0618 warning (TryInverted property moved to Options.TryInverted)

- Add [SupportedOSPlatform(windows)] attribute to DecodeQrCodeFromImage()

- Add Swiss QR Bill backward compatibility documentation

- Suppress CS0618 for AddressLine1/AddressLine2 (deprecated since Nov 2025)

- Use modern C# 12 collection expression syntax

Technical changes:

  - CreateBitmap() to CreateDXBitmap() (returns DXBitmap)

  - Convert DXBitmap to PNG stream to System.Drawing.Bitmap for ZXing

  - Add using DevExpress.Drawing and System.Runtime.Versioning

Result: 0 CA1416 warnings, 0 CS0618 warnings in DevExpressSwissQrCodeProcessor

DocumentOperator.Infrastructure/Services/QrCodeProcessing/DevExpressSwissQrCodeProcessor.cs

@@ -1,9 +1,11 @@
 using Codecrete.SwissQRBill.Generator;
+using DevExpress.Drawing;
 using DevExpress.Pdf;
 using DocumentOperator.Application.Common.Interfaces;
 using DocumentOperator.Domain.Exceptions;
 using DocumentOperator.Domain.ValueObjects;
 using System.Drawing;
+using System.Runtime.Versioning;
 using ZXing;
 
 namespace DocumentOperator.Infrastructure.Services.QrCodeProcessing;
@@ -17,6 +19,7 @@ public sealed class DevExpressSwissQrCodeProcessor : ISwissQrCodeProcessor
     private const int QrCodeSearchDpi = 300; // High DPI for better QR code recognition
 
     /// <inheritdoc />
+    [SupportedOSPlatform("windows")]
     public async Task<SwissQrCodeData> ExtractSwissQrCodeAsync(byte[] pdfBytes, CancellationToken cancellationToken = default)
     {
         ArgumentNullException.ThrowIfNull(pdfBytes);
@@ -64,30 +67,39 @@ public sealed class DevExpressSwissQrCodeProcessor : ISwissQrCodeProcessor
     /// <summary>
     /// Renders a PDF page to a high-resolution bitmap for QR code detection
     /// </summary>
-    private static Bitmap RenderPageToImage(PdfDocumentProcessor processor, int pageIndex)
+    private static DXBitmap RenderPageToImage(PdfDocumentProcessor processor, int pageIndex)
     {
         // Render page at high DPI for better QR code recognition
-        var pageImage = processor.CreateBitmap(pageIndex + 1, QrCodeSearchDpi);
+        var pageImage = processor.CreateDXBitmap(pageIndex + 1, QrCodeSearchDpi);
         return pageImage;
     }
 
     /// <summary>
-    /// Decodes QR code from an image using ZXing library
+    /// Decodes QR code from a DXBitmap image using ZXing library
     /// </summary>
-    private static string? DecodeQrCodeFromImage(Bitmap image)
+    [SupportedOSPlatform("windows")]
+    private static string? DecodeQrCodeFromImage(DXBitmap dxImage)
     {
+        // Convert DXBitmap to System.Drawing.Bitmap via MemoryStream
+        using var ms = new MemoryStream();
+        dxImage.Save(ms, DXImageFormat.Png);
+        ms.Position = 0;
+
+        using var gdiImage = Image.FromStream(ms);
+        using var gdiBitmap = new Bitmap(gdiImage);
+
         var reader = new ZXing.Windows.Compatibility.BarcodeReader
         {
             AutoRotate = true,
-            TryInverted = true,
             Options = new ZXing.Common.DecodingOptions
             {
-                PossibleFormats = new[] { BarcodeFormat.QR_CODE },
-                TryHarder = true
+                PossibleFormats = [BarcodeFormat.QR_CODE],
+                TryHarder = true,
+                TryInverted = true
             }
         };
 
-        var result = reader.Decode(image);
+        var result = reader.Decode(gdiBitmap);
         return result?.Text;
     }
 
@@ -155,7 +167,13 @@ public sealed class DevExpressSwissQrCodeProcessor : ISwissQrCodeProcessor
     }
 
     /// <summary>
-    /// Maps Codecrete Address to our AddressData value object
+    /// Maps Codecrete Address to our AddressData value object.
+    /// 
+    /// NOTE: AddressLine1 and AddressLine2 (Combined Address / K-Type) are deprecated 
+    /// as of Swiss Payment Standards 2025 (effective 21 Nov 2025). 
+    /// The Swiss QR Bill now mandates Structured Address (S-Type) format.
+    /// These fields are retained for backward compatibility with legacy QR codes 
+    /// generated before the deprecation date.
     /// </summary>
     private static AddressData MapAddress(Codecrete.SwissQRBill.Generator.Address address)
     {
@@ -165,8 +183,10 @@ public sealed class DevExpressSwissQrCodeProcessor : ISwissQrCodeProcessor
             Name = address.Name ?? string.Empty,
             Street = address.Street,
             BuildingNumber = address.HouseNo,
+#pragma warning disable CS0618 // AddressLine1/AddressLine2 obsolete but required for backward compatibility
             AddressLine1 = address.AddressLine1,
             AddressLine2 = address.AddressLine2,
+#pragma warning restore CS0618
             PostalCode = address.PostalCode ?? string.Empty,
             City = address.Town ?? string.Empty,
             Country = address.CountryCode ?? string.Empty