iOS: fix portfolio value history, scrub dots, inline nav titles

- Portfolio value: use tx.price (historical) instead of currentPrice
  for chart data and KPI snapshots — fixes incorrect historical
  portfolio valuation
- Chart scrub: add PointMarks (dots) at intersections of the vertical
  RuleMark with each visible series line (matching Android)
- Nav titles: Portfolio, Notifications, Settings use inline display
  mode to reduce vertical space

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: vitnehasil

accbot-ios/AccBot/Presentation/Screens/Notifications/NotificationsView.swift

@@ -46,6 +46,7 @@ struct NotificationsView: View {
         }
         .background(colors.background)
         .navigationTitle(String(localized: "Notifications"))
+        .navigationBarTitleDisplayMode(.inline)
         .toolbarBackground(colors.background, for: .navigationBar)
         .toolbarBackground(.visible, for: .navigationBar)
         .toolbar {

accbot-ios/AccBot/Presentation/Screens/Portfolio/PortfolioView.swift

@@ -38,6 +38,7 @@ struct PortfolioView: View {
         }
         .background(colors.background)
         .navigationTitle(String(localized: "Portfolio"))
+        .navigationBarTitleDisplayMode(.inline)
         .toolbarBackground(colors.background, for: .navigationBar)
         .toolbarBackground(.visible, for: .navigationBar)
         .toolbar {
@@ -204,6 +205,28 @@ struct PortfolioView: View {
 
     private var isScrubbing: Bool { selectedDate != nil }
 
+    /// Find the nearest chart point per visible series for the scrub date.
+    private func scrubPoints(for date: Date) -> [PortfolioViewModel.ChartPoint] {
+        let target = date.timeIntervalSince1970
+        var result = [PortfolioViewModel.ChartPoint]()
+        let grouped = Dictionary(grouping: viewModel.chartData) { $0.series }
+        for (_, points) in grouped {
+            guard !points.isEmpty else { continue }
+            var lo = 0, hi = points.count - 1
+            while lo < hi {
+                let mid = (lo + hi) / 2
+                if points[mid].date.timeIntervalSince1970 < target { lo = mid + 1 }
+                else { hi = mid }
+            }
+            let candidates = [max(0, lo - 1), min(lo, points.count - 1)]
+            if let nearest = candidates.map({ points[$0] })
+                .min(by: { abs($0.date.timeIntervalSince(date)) < abs($1.date.timeIntervalSince(date)) }) {
+                result.append(nearest)
+            }
+        }
+        return result
+    }
+
     // MARK: - KPI Section
 
     private var kpiSection: some View {
@@ -393,6 +416,16 @@ struct PortfolioView: View {
                         RuleMark(x: .value("Selected", date))
                             .foregroundStyle(colors.onSurfaceVariant)
                             .lineStyle(StrokeStyle(lineWidth: 1, dash: [4, 4]))
+
+                        // Dots at intersection of RuleMark with each visible series
+                        ForEach(scrubPoints(for: date)) { point in
+                            PointMark(
+                                x: .value("Date", point.date),
+                                y: .value("Value", point.value)
+                            )
+                            .foregroundStyle(by: .value("Series", point.series.localizedName))
+                            .symbolSize(36)
+                        }
                     }
                 }
                 .chartForegroundStyleScale([

accbot-ios/AccBot/Presentation/Screens/Portfolio/PortfolioViewModel.swift

@@ -443,7 +443,7 @@ final class PortfolioViewModel: ObservableObject {
             var snapshots = [KpiSnapshot]()
             for (index, tx) in zoomTransactions.enumerated() {
                 let entry = cumulativeByTimestamp[tx.executedAt.timeIntervalSince1970]!
-                let pv = entry.accumulated * (currentPrice ?? tx.price)
+                let pv = entry.accumulated * tx.price
                 let roi: Decimal? = entry.costBasis > 0
                     ? ((pv - entry.costBasis) / entry.costBasis) * 100
                     : nil
@@ -490,7 +490,7 @@ final class PortfolioViewModel: ObservableObject {
                 for (index, tx) in zoomTransactions.enumerated() {
                     let value: Decimal
                     switch series {
-                    case .portfolioValue: value = accumulatedByIndex[index] * (currentPrice ?? tx.price)
+                    case .portfolioValue: value = accumulatedByIndex[index] * tx.price
                     case .costBasis: value = costBasisByIndex[index]
                     case .cryptoPrice: value = tx.price
                     case .avgBuyPrice: value = avgBuyPriceByIndex[index]

accbot-ios/AccBot/Presentation/Screens/Settings/SettingsView.swift

@@ -22,6 +22,7 @@ struct SettingsView: View {
         .maxFormWidth()
         .background(colors.background)
         .navigationTitle(String(localized: "Settings"))
+        .navigationBarTitleDisplayMode(.inline)
         .toolbarBackground(colors.background, for: .navigationBar)
         .toolbarBackground(.visible, for: .navigationBar)
         .alert(