untested change to add serial context to coin before attempting to id it

lib/flutter_libsparkmobile.dart

@@ -93,6 +93,7 @@ abstract final class LibSpark {
     final String serializedCoin, {
     required final String privateKeyHex,
     required final int index,
+    required final Uint8List context,
     final bool isTestNet = false,
   }) {
     // take sublist as tx hash is also appended here for some reason
@@ -101,17 +102,21 @@ abstract final class LibSpark {
     final serializedCoinPtr = b64CoinDecoded.unsignedCharPointer();
     final privateKeyPtr =
         privateKeyHex.to32BytesFromHex().unsignedCharPointer();
+    final contextPtr = context.unsignedCharPointer();
 
     final result = _bindings.idAndRecoverCoin(
       serializedCoinPtr,
       b64CoinDecoded.length,
       privateKeyPtr,
       index,
+      contextPtr,
+      context.length,
       isTestNet ? 1 : 0,
     );
 
     malloc.free(serializedCoinPtr);
     malloc.free(privateKeyPtr);
+    malloc.free(contextPtr);
 
     if (result.address == nullptr.address) {
       return null;

lib/src/flutter_libsparkmobile_bindings_generated.dart

@@ -59,6 +59,8 @@ class FlutterLibsparkmobileBindings {
     int serializedCoinLength,
     ffi.Pointer<ffi.UnsignedChar> keyData,
     int index,
+    ffi.Pointer<ffi.UnsignedChar> context,
+    int contextLength,
     int isTestNet,
   ) {
     return _idAndRecoverCoin(
@@ -66,6 +68,8 @@ class FlutterLibsparkmobileBindings {
       serializedCoinLength,
       keyData,
       index,
+      context,
+      contextLength,
       isTestNet,
     );
   }
@@ -77,10 +81,18 @@ class FlutterLibsparkmobileBindings {
               ffi.Int,
               ffi.Pointer<ffi.UnsignedChar>,
               ffi.Int,
+              ffi.Pointer<ffi.UnsignedChar>,
+              ffi.Int,
               ffi.Int)>>('idAndRecoverCoin');
   late final _idAndRecoverCoin = _idAndRecoverCoinPtr.asFunction<
-      ffi.Pointer<AggregateCoinData> Function(ffi.Pointer<ffi.UnsignedChar>,
-          int, ffi.Pointer<ffi.UnsignedChar>, int, int)>();
+      ffi.Pointer<AggregateCoinData> Function(
+          ffi.Pointer<ffi.UnsignedChar>,
+          int,
+          ffi.Pointer<ffi.UnsignedChar>,
+          int,
+          ffi.Pointer<ffi.UnsignedChar>,
+          int,
+          int)>();
 
   /// FFI-friendly wrapper for spark::createSparkMintRecipients.
   ///