Display used and reserved limits capacity

frontend/packages/sxchnge_kyc/lib/src/models/limits.dart

@@ -10,6 +10,8 @@ class VisibleLimit {
     required this.verifiedMinor,
     required this.currentMinor,
     required this.remainingMinor,
+    required this.usedMinor,
+    required this.reservedMinor,
   });
   final LimitPeriod period;
   final String currency;
@@ -17,6 +19,13 @@ class VisibleLimit {
   final int verifiedMinor;
   final int currentMinor;
   final int remainingMinor;
+  final int usedMinor;
+  final int reservedMinor;
+
+  /// Presentation only: remaining capacity and payment authorization stay server-owned.
+  double get occupiedFraction => currentMinor <= 0
+      ? 0
+      : ((usedMinor + reservedMinor) / currentMinor).clamp(0.0, 1.0);
 }
 
 class Limits {