Feedback #3 y #4: pegar/OCR por campo en Quick Update + swipe entre charts (build 60)

#3 Quick Update paste/scan por campo:
- Barra de teclado con 'Pegar €X' (si hay importe en portapapeles) y 'Escanear'
  (PhotosPicker → OCR on-device). Actúan sobre el campo enfocado.
- ImageAmountScanner nuevo (app target, Vision) espejo del scanner del Share
  Extension: candidatos rankeados por prominencia, filtra % y años.
- 1 candidato → rellena directo; varios → confirmationDialog para elegir.
- Strings ×7.

#4 Swipe entre charts (iPhone):
- Gesto horizontal en el área del chart avanza al chart anterior/siguiente en
  el orden del menú de título (respeta showForecast). Indicador de página con
  puntos. Transición direccional. selectChart ya no bloquea premium (muestra
  teaser), así que deslizar a uno premium funciona.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WoScpmHdVj1aUf4rAp6hbe

PortfolioJournal/Views/Charts/ChartsContainerView.swift

@@ -604,6 +604,14 @@ struct ChartsContainerView: View {
                     }
                     iPhonePeriodControl
                     chartContent
+                        // Swipe left/right to move to the adjacent chart type.
+                        .gesture(chartSwipeGesture)
+                        .id(viewModel.selectedChartType)
+                        .transition(.asymmetric(
+                            insertion: .move(edge: swipeInsertionEdge).combined(with: .opacity),
+                            removal: .opacity
+                        ))
+                    chartPageIndicator
                     if viewModel.hiddenHistoryMonths > 0 {
                         lockedHistoryTeaser
                     }
@@ -614,6 +622,45 @@ struct ChartsContainerView: View {
         .sheet(isPresented: $viewModel.showingPaywall) { PaywallView() }
     }
 
+    // MARK: - iPhone swipe between charts
+
+    /// Chart types in the same grouped order as the title switcher menu.
+    private var orderedChartTypes: [ChartsViewModel.ChartType] {
+        Self.chartGroups.flatMap { $0.types }.filter { showForecast || $0 != .prediction }
+    }
+
+    @State private var swipeInsertionEdge: Edge = .trailing
+
+    private var chartSwipeGesture: some Gesture {
+        DragGesture(minimumDistance: 30)
+            .onEnded { value in
+                // Horizontal-dominant swipes only, so vertical scroll still works.
+                guard abs(value.translation.width) > abs(value.translation.height) * 1.5 else { return }
+                let ordered = orderedChartTypes
+                guard let idx = ordered.firstIndex(of: viewModel.selectedChartType) else { return }
+                if value.translation.width < 0, idx < ordered.count - 1 {
+                    swipeInsertionEdge = .trailing
+                    withAnimation(.snappy) { viewModel.selectChart(ordered[idx + 1]) }
+                } else if value.translation.width > 0, idx > 0 {
+                    swipeInsertionEdge = .leading
+                    withAnimation(.snappy) { viewModel.selectChart(ordered[idx - 1]) }
+                }
+            }
+    }
+
+    private var chartPageIndicator: some View {
+        let ordered = orderedChartTypes
+        let current = ordered.firstIndex(of: viewModel.selectedChartType) ?? 0
+        return HStack(spacing: 5) {
+            ForEach(ordered.indices, id: \.self) { i in
+                Circle()
+                    .fill(i == current ? Color.appPrimary : Color.secondary.opacity(0.25))
+                    .frame(width: i == current ? 7 : 5, height: i == current ? 7 : 5)
+            }
+        }
+        .animation(.snappy, value: current)
+    }
+
     /// Stocks-style segmented period control above the chart (the chart switcher
     /// lives in the title menu, filters in the toolbar).
     @ViewBuilder