Wetter: stündliche Niederschlags-Timeline (WeatherKit hourlyForecast)

Säulen-Diagramm zwischen Stats-Grid und Hunde-Hinweisen:
- Heute: nächste 12h ab jetzt
- Andere Tage: 06–22h des Tages
- Säulenhöhe aus precipitationAmount in mm, Farbgradient aus Intensität
  (chance + mm). Header zeigt durchschnittliche Regenwahrscheinlichkeit
  oder 'trocken' wenn < 5%.

BanYaroGo/Views/WetterView.swift

@@ -54,6 +54,7 @@ struct WetterView: View {
                     gassiScoreBadge(metrics: metrics)
                     summaryCard(day: day, metrics: metrics)
                     statsGrid(metrics: metrics)
+                    rainTimeline(weather: weather, day: day, isToday: safeIndex == 0)
                     hundeHinweise(day: day, metrics: metrics)
                     schnueffelCard(metrics: metrics)
                 }
@@ -187,6 +188,99 @@ struct WetterView: View {
         .background(.background.secondary, in: RoundedRectangle(cornerRadius: 12))
     }
 
+    // MARK: - Niederschlags-Timeline
+
+    private func rainTimeline(weather: Weather, day: DayWeather, isToday: Bool) -> some View {
+        let hours = relevantHours(weather: weather, day: day, isToday: isToday)
+        let maxMm = max(hours.map { $0.precipitationAmount.converted(to: .millimeters).value }.max() ?? 0, 0.5)
+        let totalChance = hours.reduce(0.0) { $0 + $1.precipitationChance } / Double(max(1, hours.count))
+
+        return VStack(alignment: .leading, spacing: 10) {
+            HStack {
+                Label("Niederschlag", systemImage: "umbrella.fill")
+                    .font(.headline)
+                    .foregroundStyle(.blue)
+                Spacer()
+                Text(headerLabel(isToday: isToday, totalChance: totalChance))
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+
+            if hours.isEmpty {
+                Text("Keine stündlichen Daten verfügbar.")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            } else {
+                ScrollView(.horizontal, showsIndicators: false) {
+                    HStack(alignment: .bottom, spacing: 6) {
+                        ForEach(Array(hours.enumerated()), id: \.offset) { _, hour in
+                            rainBar(for: hour, scaleMm: maxMm)
+                        }
+                    }
+                    .frame(height: 110)
+                }
+            }
+        }
+        .padding(14)
+        .background(.background.secondary, in: RoundedRectangle(cornerRadius: 12))
+    }
+
+    private func relevantHours(weather: Weather, day: DayWeather, isToday: Bool) -> [HourWeather] {
+        let all = weather.hourlyForecast
+        if isToday {
+            // Ab jetzt die nächsten 12 Stunden
+            return Array(all.filter { $0.date >= .now }.prefix(12))
+        }
+        // Der ausgewählte Tag, 06:00 bis 22:00
+        let cal = Calendar.current
+        return all
+            .filter { cal.isDate($0.date, inSameDayAs: day.date) }
+            .filter {
+                let h = cal.component(.hour, from: $0.date)
+                return h >= 6 && h <= 22
+            }
+    }
+
+    private func rainBar(for hour: HourWeather, scaleMm: Double) -> some View {
+        let chance = hour.precipitationChance
+        let mm = hour.precipitationAmount.converted(to: .millimeters).value
+        // Höhe primär aus mm, mindestens 6 (auch bei 0 sichtbarer Bar-Sockel)
+        let height: CGFloat = max(6, CGFloat(mm / scaleMm) * 50)
+        let intensity: Double = min(1.0, chance + mm / 5)
+        let baseColor = Color.blue
+        return VStack(spacing: 3) {
+            Text("\(Int((chance * 100).rounded()))%")
+                .font(.caption2.monospacedDigit())
+                .foregroundStyle(chance >= 0.3 ? .primary : .secondary)
+            Rectangle()
+                .fill(LinearGradient(
+                    colors: [baseColor.opacity(0.4 + 0.6 * intensity), baseColor.opacity(0.2 + 0.2 * intensity)],
+                    startPoint: .top,
+                    endPoint: .bottom
+                ))
+                .frame(width: 22, height: height)
+                .clipShape(RoundedRectangle(cornerRadius: 4))
+            Text(hourLabel(hour.date))
+                .font(.caption2.monospacedDigit())
+                .foregroundStyle(.secondary)
+        }
+        .frame(height: 100, alignment: .bottom)
+    }
+
+    private func hourLabel(_ date: Date) -> String {
+        let f = DateFormatter()
+        f.locale = Locale(identifier: "de_DE")
+        f.dateFormat = "HH"
+        return "\(f.string(from: date)):00"
+    }
+
+    private func headerLabel(isToday: Bool, totalChance: Double) -> String {
+        let pct = Int((totalChance * 100).rounded())
+        let prefix = isToday ? "nächste 12 h" : "06–22 h"
+        if totalChance < 0.05 { return "\(prefix) · trocken" }
+        return "\(prefix) · ⌀ \(pct) % Regen"
+    }
+
     // MARK: - Hunde-Hinweise
 
     private func hundeHinweise(day: DayWeather, metrics: DayMetrics) -> some View {