+ quotation provider

frontend/pshared/lib/models/payment/fx/intent.dart

@@ -0,0 +1,21 @@
+import 'package:pshared/models/payment/currency_pair.dart';
+import 'package:pshared/models/payment/fx/side.dart';
+
+
+class FxIntent {
+  final CurrencyPair? pair;
+  final FxSide side;
+  final bool firm;
+  final int? ttlMs;
+  final String? preferredProvider;
+  final int? maxAgeMs;
+
+  const FxIntent({
+    this.pair,
+    this.side = FxSide.unspecified,
+    this.firm = false,
+    this.ttlMs,
+    this.preferredProvider,
+    this.maxAgeMs,
+  });
+}

frontend/pshared/lib/models/payment/fx/quote.dart

@@ -0,0 +1,30 @@
+import 'package:pshared/models/payment/money.dart';
+
+
+class FxQuote {
+  final String? quoteRef;
+  final String? baseCurrency;
+  final String? quoteCurrency;
+  final String? side;
+  final String? price;
+  final Money? baseAmount;
+  final Money? quoteAmount;
+  final int? expiresAtUnixMs;
+  final String? provider;
+  final String? rateRef;
+  final bool firm;
+
+  const FxQuote({
+    required this.quoteRef,
+    required this.baseCurrency,
+    required this.quoteCurrency,
+    required this.side,
+    required this.price,
+    required this.baseAmount,
+    required this.quoteAmount,
+    required this.expiresAtUnixMs,
+    required this.provider,
+    required this.rateRef,
+    this.firm = false,
+  });
+}

frontend/pshared/lib/models/payment/fx/side.dart

@@ -0,0 +1 @@
+enum FxSide { unspecified, buyBaseSellQuote, sellBaseBuyQuote }