Dashboard-Grafiken neu: Asset-Aufteilung Beginn/Ende je Phase; Vermoegensverlauf nach Alter

- Balkendiagramm: je Phase zwei x-Kategorien (Beginn/Ende), gestapelt nach Asset-Element
  (Schluessel = elementId, damit gleiche Namen nicht kollidieren). Zeigt die Umschichtung;
  Ende Phase N liegt neben Beginn Phase N+1.
- Liniendiagramm: x-Achse ist neu das Alter (Referenz Person A) von Startalter bis Ende der
  letzten Phase, mit Start- und Phasen-Endwerten (nominal + real), statt Phasenindex.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/components/Dashboard.tsx

@@ -51,25 +51,36 @@ export function Dashboard({
   }, [plan.name, computed, compareIds, compareData, allPlans]);
 
   const ASSET_CATS = ["PENSION_FUND", "PILLAR_3A", "REAL_ESTATE", "OTHER_ASSET"];
-  const barKeys = useMemo(() => {
-    const keys = new Set<string>();
+
+  // Asset-Elemente (nach id, damit gleiche Namen nicht kollidieren), die irgendwann einen
+  // positiven Wert haben -- in Reihenfolge ihres ersten Auftretens.
+  const assetEls = useMemo(() => {
+    const info = new Map<string, { name: string; any: boolean }>();
     for (const phase of computed.phases) {
       for (const el of phase.elements) {
-        if (ASSET_CATS.includes(el.category) && el.endValue > 0) keys.add(el.name);
+        if (!ASSET_CATS.includes(el.category)) continue;
+        const cur = info.get(el.elementId) ?? { name: el.name, any: false };
+        cur.name = el.name;
+        if (el.startValue > 0 || el.endValue > 0) cur.any = true;
+        info.set(el.elementId, cur);
       }
     }
-    return Array.from(keys);
+    return [...info.entries()].filter(([, v]) => v.any).map(([id, v]) => ({ id, name: v.name }));
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [computed]);
 
+  // Je Phase zwei Kategorien auf der x-Achse: Beginn und Ende. Werte je Asset-Element.
   const barData = useMemo(
     () =>
-      computed.phases.map((phase) => {
-        const row: Record<string, number | string> = { phase: phase.name };
+      computed.phases.flatMap((phase) => {
+        const beginn: Record<string, number | string> = { label: `${phase.name} · Beginn` };
+        const ende: Record<string, number | string> = { label: `${phase.name} · Ende` };
         for (const el of phase.elements) {
-          if (ASSET_CATS.includes(el.category) && el.endValue > 0) row[el.name] = el.endValue;
+          if (!ASSET_CATS.includes(el.category)) continue;
+          beginn[el.elementId] = Math.max(0, Math.round(el.startValue));
+          ende[el.elementId] = Math.max(0, Math.round(el.endValue));
         }
-        return row;
+        return [beginn, ende];
       }),
     // eslint-disable-next-line react-hooks/exhaustive-deps
     [computed]
@@ -90,7 +101,7 @@ export function Dashboard({
         <div className="mb-3 flex flex-wrap items-center justify-between gap-2">
           <h3 className="flex items-center gap-1.5 text-sm font-semibold text-fg">
             <LineChartIcon className="h-4 w-4 text-accent" />
-            Vermoegensverlauf
+            Vermoegensverlauf nach Alter
           </h3>
           <a
             href={`/api/plans/${plan.id}/export`}
@@ -119,23 +130,27 @@ export function Dashboard({
       </section>
 
       <section className="rounded-xl border border-border bg-surface p-4 shadow-sm">
-        <h3 className="mb-3 flex items-center gap-1.5 text-sm font-semibold text-fg">
+        <h3 className="mb-1 flex items-center gap-1.5 text-sm font-semibold text-fg">
           <BarChart3 className="h-4 w-4 text-accent" />
-          Vermoegensaufteilung pro Phase (Endvermoegen)
+          Vermoegensaufteilung pro Phase (Beginn &amp; Ende)
         </h3>
+        <p className="mb-3 text-xs text-muted">
+          Je Phase links die Aufteilung zu Beginn, rechts am Ende. Das Ende einer Phase entspricht im
+          Gesamtvolumen dem Beginn der naechsten &ndash; die Aufteilung kann durch Umschichtung abweichen.
+        </p>
         <div className="h-72 w-full">
           <ResponsiveContainer width="100%" height="100%">
             <BarChart data={barData} margin={{ top: 8, right: 16, left: 8, bottom: 8 }}>
               <CartesianGrid strokeDasharray="3 3" className="stroke-border" />
-              <XAxis dataKey="phase" tick={{ fontSize: 11 }} />
+              <XAxis dataKey="label" tick={{ fontSize: 10 }} interval={0} angle={-30} textAnchor="end" height={70} />
               <YAxis
                 tick={{ fontSize: 11 }}
                 tickFormatter={(v) => Intl.NumberFormat("de-CH", { notation: "compact" }).format(v)}
               />
               <Tooltip formatter={(v) => (typeof v === "number" ? formatChf(v) : v)} />
               <Legend wrapperStyle={{ fontSize: 12 }} />
-              {barKeys.map((key, i) => (
-                <Bar key={key} dataKey={key} stackId="a" fill={PALETTE[i % PALETTE.length]} />
+              {assetEls.map((el, i) => (
+                <Bar key={el.id} dataKey={el.id} name={el.name} stackId="a" fill={PALETTE[i % PALETTE.length]} />
               ))}
             </BarChart>
           </ResponsiveContainer>

src/components/WealthChart.tsx

@@ -19,25 +19,38 @@ export interface TimelineSeries {
   computed: PlanComputed;
 }
 
-// Liniendiagramm: Endvermoegen (nominal + real) je Lebensphase. Unterstuetzt mehrere
+// Datenpunkte je Serie: Start (Beginn Phase 1) + Endwert je Phase, verortet auf dem
+// Alter der Referenzperson (Person A). So laeuft die x-Achse ueber das Alter statt ueber
+// die Phasen.
+function pointsFor(computed: PlanComputed) {
+  const phases = computed.phases;
+  if (phases.length === 0) return [] as { age: number; nominal: number; real: number }[];
+  const refAge = (ph: PlanComputed["phases"][number]) => ph.persons[0]?.startAge ?? 0;
+  const pts = [
+    { age: refAge(phases[0]), nominal: Math.round(phases[0].startWealthNominal), real: Math.round(phases[0].startWealthNominal) },
+  ];
+  for (const p of phases) {
+    pts.push({ age: refAge(p) + p.durationYears, nominal: Math.round(p.endWealthNominal), real: Math.round(p.endWealthReal) });
+  }
+  return pts;
+}
+
+// Liniendiagramm: Gesamtvermoegen (nominal + real) ueber das Alter. Unterstuetzt mehrere
 // ueberlagerte Plaene fuer den Szenario-Vergleich.
 export function WealthChart({ series }: { series: TimelineSeries[] }) {
   if (series.length === 0 || series[0].computed.phases.length === 0) {
     return <p className="text-sm text-muted">Noch keine Phasen vorhanden.</p>;
   }
 
-  // Datenpunkte je Phasen-Index; X-Achse = Phasenname des Hauptplans.
-  const maxLen = Math.max(...series.map((s) => s.computed.phases.length));
-  const data = Array.from({ length: maxLen }, (_, i) => {
-    const row: Record<string, number | string> = {
-      phase: series[0].computed.phases[i]?.name ?? `Phase ${i + 1}`,
-    };
-    for (const s of series) {
-      const p = s.computed.phases[i];
-      if (p) {
-        row[`${s.label} (nominal)`] = Math.round(p.endWealthNominal);
-        row[`${s.label} (real)`] = Math.round(p.endWealthReal);
-      }
+  const withPoints = series.map((s) => ({ ...s, points: pointsFor(s.computed) }));
+  const ages = Array.from(new Set(withPoints.flatMap((s) => s.points.map((p) => p.age)))).sort((a, b) => a - b);
+
+  const data = ages.map((age) => {
+    const row: Record<string, number | null> = { age };
+    for (const s of withPoints) {
+      const pt = s.points.find((p) => p.age === age);
+      row[`${s.label} (nominal)`] = pt ? pt.nominal : null;
+      row[`${s.label} (real)`] = pt ? pt.real : null;
     }
     return row;
   });
@@ -47,14 +60,23 @@ export function WealthChart({ series }: { series: TimelineSeries[] }) {
       <ResponsiveContainer width="100%" height="100%">
         <LineChart data={data} margin={{ top: 8, right: 16, left: 8, bottom: 8 }}>
           <CartesianGrid strokeDasharray="3 3" className="stroke-border" />
-          <XAxis dataKey="phase" tick={{ fontSize: 11 }} />
+          <XAxis
+            dataKey="age"
+            type="number"
+            domain={["dataMin", "dataMax"]}
+            tick={{ fontSize: 11 }}
+            tickFormatter={(v) => `${v} J.`}
+          />
           <YAxis
             tick={{ fontSize: 11 }}
             tickFormatter={(v) => Intl.NumberFormat("de-CH", { notation: "compact" }).format(v)}
           />
-          <Tooltip formatter={(v) => (typeof v === "number" ? formatChf(v) : v)} />
+          <Tooltip
+            formatter={(v) => (typeof v === "number" ? formatChf(v) : v)}
+            labelFormatter={(v) => `Alter ${v}`}
+          />
           <Legend wrapperStyle={{ fontSize: 12 }} />
-          {series.map((s) => (
+          {withPoints.map((s) => (
             <Line
               key={`${s.label}-nominal`}
               type="monotone"
@@ -62,9 +84,10 @@ export function WealthChart({ series }: { series: TimelineSeries[] }) {
               stroke={s.color}
               strokeWidth={2}
               dot={false}
+              connectNulls
             />
           ))}
-          {series.map((s) => (
+          {withPoints.map((s) => (
             <Line
               key={`${s.label}-real`}
               type="monotone"
@@ -73,6 +96,7 @@ export function WealthChart({ series }: { series: TimelineSeries[] }) {
               strokeWidth={2}
               strokeDasharray="5 3"
               dot={false}
+              connectNulls
             />
           ))}
         </LineChart>