Vererbung Einkommen/Ausgaben + Real/Nominal-Umschalter

Punkt 1: Beim Speichern eines Einkommens-/Ausgaben-Basiswerts, der dem fortgeschriebenen
Wert der Vorphase entspricht, wird KEIN Override gespeichert. Damit wirken sich Aenderungen
in frueheren Phasen automatisch auf Folgephasen aus (live vererbt); nur ein bewusst
abweichender Wert bleibt fix.

Punkt 2: Anzeige-Umschalter oben links (Nominal / Beide / Real), pro Geraet gespeichert.
Alle Betraege in Matrix, Cash-Zeile und Phasenkopf zeigen je nach Wahl den nominalen,
realen (kaufkraftbereinigten) oder beide Werte. Engine liefert dazu cumulativeInflationStart
(Deflator zu Phasenbeginn) zusaetzlich zum Phasenende.

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

src/components/ElementDetail.tsx

@@ -455,7 +455,19 @@ export function ElementDetail({ element, context, phaseData, transitionData, onS
       if (isTransition) {
         await api.put(`/api/elements/${element.id}/transition/${context.phaseId}`, td);
       } else {
-        await api.put(`/api/elements/${element.id}/phase/${context.phaseId}`, pd);
+        const payload: PhaseData = { ...pd };
+        // Einkommen/Ausgaben ab Phase 2: entspricht der Basiswert dem fortgeschriebenen Wert
+        // der Vorphase, KEINEN Override speichern -> Wert bleibt live vererbt (Aenderungen in
+        // frueheren Phasen wirken sich weiter aus). Nur ein bewusst abweichender Wert wird fix.
+        if (
+          (element.category === "INCOME" || element.category === "EXPENSE") &&
+          context.carried &&
+          typeof payload.amount === "number" &&
+          payload.amount === Math.round(context.derivedStart)
+        ) {
+          delete payload.amount;
+        }
+        await api.put(`/api/elements/${element.id}/phase/${context.phaseId}`, payload);
       }
       onSaved();
     } catch (e) {

src/components/PlanView.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useMemo, useState } from "react";
+import { useEffect, useMemo, useState } from "react";
 import {
   AlertCircle,
   Building2,
@@ -96,6 +96,17 @@ export function PlanView({
   const [editTransition, setEditTransition] = useState<{ elementId: string; fromPhaseId: string } | null>(null);
   const [editPhaseCell, setEditPhaseCell] = useState<{ elementId: string; phaseId: string } | null>(null);
   const [showCashInit, setShowCashInit] = useState(false);
+  const [valueMode, setValueMode] = useState<ValueMode>("nominal");
+
+  useEffect(() => {
+    const stored = typeof window !== "undefined" ? window.localStorage.getItem(VALUE_MODE_KEY) : null;
+    // eslint-disable-next-line react-hooks/set-state-in-effect -- einmalige Uebernahme der gespeicherten Wahl
+    if (stored === "nominal" || stored === "both" || stored === "real") setValueMode(stored);
+  }, []);
+  function changeValueMode(m: ValueMode) {
+    setValueMode(m);
+    if (typeof window !== "undefined") window.localStorage.setItem(VALUE_MODE_KEY, m);
+  }
 
   const columns = useMemo<Column[]>(() => {
     const cols: Column[] = [];
@@ -239,6 +250,25 @@ export function PlanView({
 
   return (
     <div className="flex flex-col gap-5">
+      <div className="flex items-center gap-2">
+        <span className="text-xs text-muted">Anzeige</span>
+        <div className="inline-flex rounded-lg border border-border bg-surface p-0.5 text-xs">
+          {(["nominal", "both", "real"] as ValueMode[]).map((m) => (
+            <button
+              key={m}
+              type="button"
+              onClick={() => changeValueMode(m)}
+              className={`rounded-md px-2.5 py-1 font-medium ${
+                valueMode === m ? "bg-accent text-accent-fg" : "text-muted hover:bg-surface-2"
+              }`}
+            >
+              {m === "nominal" ? "Nominal" : m === "both" ? "Beide" : "Real"}
+            </button>
+          ))}
+        </div>
+        <span className="text-[11px] text-faint">real = kaufkraftbereinigt (Planbeginn)</span>
+      </div>
+
       <Timeline phases={computed.phases} persons={personAxes} ruinAge={computed.ruinAge} />
 
       {/* Plan-Profil */}
@@ -312,6 +342,7 @@ export function PlanView({
                       key={col.phase.id}
                       phase={col.phase}
                       personLabel={personLabel}
+                      mode={valueMode}
                       onClick={() => setSelected({ type: "phase", phaseId: col.phase.id })}
                       active={selected?.type === "phase" && selected.phaseId === col.phase.id}
                     />
@@ -346,7 +377,9 @@ export function PlanView({
                       } ${col.phase.cashNegative ? "font-semibold text-danger" : "text-fg"}`}
                     >
                       <span className="whitespace-nowrap">
-                        {formatChf(col.phase.cashStart)} <span className="text-faint">→</span> {formatChf(col.phase.cashEnd)}
+                        {valStr(col.phase.cashStart, col.phase.cumulativeInflationStart, valueMode)}{" "}
+                        <span className="text-faint">→</span>{" "}
+                        {valStr(col.phase.cashEnd, col.phase.cumulativeInflationEnd, valueMode)}
                       </span>
                     </td>
                   ) : (
@@ -402,7 +435,7 @@ export function PlanView({
                                     ce?.locked ? "text-faint" : "text-fg"
                                   }`}
                                 >
-                                  {phaseCellContent(ce)}
+                                  {phaseCellContent(ce, col.phase, valueMode)}
                                 </td>
                               );
                             }
@@ -628,31 +661,57 @@ export function PlanView({
 // Zellinhalt: Start- UND Zielwert fuer wertbehaftete Elemente, sonst die Kennzahl.
 const START_END_CATEGORIES: ElementCategory[] = [...VALUE_CATEGORIES, "INCOME", "EXPENSE"];
 
-function phaseCellContent(ce: ReturnType<PhaseComputed["elements"]["find"]> | undefined): React.ReactNode {
+type ValueMode = "nominal" | "both" | "real";
+const VALUE_MODE_KEY = "fpt-value-mode";
+
+// Realwert = nominal / kumulierte Inflation (Kaufkraft zum Planbeginn).
+function realOf(nominal: number, deflator: number): number {
+  return Math.round(nominal / (deflator || 1));
+}
+function valStr(nominal: number, deflator: number, mode: ValueMode): string {
+  if (mode === "real") return formatChf(realOf(nominal, deflator));
+  if (mode === "both") return `${formatChf(nominal)} (${formatChf(realOf(nominal, deflator))})`;
+  return formatChf(nominal);
+}
+
+function phaseCellContent(
+  ce: ReturnType<PhaseComputed["elements"]["find"]> | undefined,
+  phase: PhaseComputed,
+  mode: ValueMode
+): React.ReactNode {
   if (!ce) return "–";
   if (ce.note) return ce.note;
+  const dS = phase.cumulativeInflationStart;
+  const dE = phase.cumulativeInflationEnd;
   if (START_END_CATEGORIES.includes(ce.category) && (ce.startValue !== 0 || ce.endValue !== 0)) {
     return (
       <span className="whitespace-nowrap">
-        {formatChf(ce.startValue)} <span className="text-faint">→</span> {formatChf(ce.endValue)}
+        {valStr(ce.startValue, dS, mode)} <span className="text-faint">→</span> {valStr(ce.endValue, dE, mode)}
       </span>
     );
   }
+  if ((ce.category === "AHV" || ce.category === "PENSION_FUND") && ce.startValue !== 0) {
+    return `Rente ${valStr(ce.startValue, dS, mode)}`;
+  }
   return ce.summary || "–";
 }
 
 function PhaseHeader({
   phase,
   personLabel,
+  mode,
   onClick,
   active,
 }: {
   phase: PhaseComputed;
   personLabel: (role: string) => string;
+  mode: ValueMode;
   onClick: () => void;
   active: boolean;
 }) {
   const quotaLabel = phase.isConsumption ? "Verzehr" : "Quote";
+  const dS = phase.cumulativeInflationStart;
+  const dE = phase.cumulativeInflationEnd;
   return (
     <th
       onClick={onClick}
@@ -680,18 +739,17 @@ function PhaseHeader({
             {personLabel(p.role)} {p.startAge} → {p.endAge}
           </div>
         ))}
-        <div>Einkommen {formatChf(phase.incomeStart)} → {formatChf(phase.incomeEnd)}</div>
+        <div>Einkommen {valStr(phase.incomeStart, dS, mode)} → {valStr(phase.incomeEnd, dE, mode)}</div>
-        <div>Ausgaben {formatChf(phase.expenseStart)} → {formatChf(phase.expenseEnd)}</div>
+        <div>Ausgaben {valStr(phase.expenseStart, dS, mode)} → {valStr(phase.expenseEnd, dE, mode)}</div>
         <div>
-          {quotaLabel} {formatChf(phase.quotaStart)} → {formatChf(phase.quotaEnd)}
+          {quotaLabel} {valStr(phase.quotaStart, dS, mode)} → {valStr(phase.quotaEnd, dE, mode)}
         </div>
         <div className={phase.cashNegative ? "text-danger font-medium" : ""}>
-          Cash {formatChf(phase.cashStart)} → {formatChf(phase.cashEnd)}
+          Cash {valStr(phase.cashStart, dS, mode)} → {valStr(phase.cashEnd, dE, mode)}
         </div>
         <div>
-          Vermoegen {formatChf(phase.startWealthNominal)} → {formatChf(phase.endWealthNominal)}
+          Vermoegen {valStr(phase.startWealthNominal, dS, mode)} → {valStr(phase.endWealthNominal, dE, mode)}
         </div>
-        <div className="text-faint">real {formatChf(phase.endWealthReal)}</div>
       </div>
     </th>
   );

src/lib/calculations.ts

@@ -62,7 +62,8 @@ export interface PhaseComputed {
   elements: ElementPhaseComputed[];
   startWealthNominal: number; // inkl. Cash
   endWealthNominal: number; // inkl. Cash
-  cumulativeInflationEnd: number;
+  cumulativeInflationStart: number; // Kaufkraft-Deflator zu Phasenbeginn (Startwerte)
+  cumulativeInflationEnd: number; // Kaufkraft-Deflator am Phasenende (Endwerte)
   endWealthReal: number;
 }
 
@@ -408,6 +409,7 @@ export function computePlan(plan: PlanInput): PlanComputed {
     const cashEnd = Math.round(cash);
     const startWealthNominal = Math.round(wealthStart + cashStart);
     const endWealthNominal = Math.round(wealthEnd + cashEnd);
+    const cumulativeInflationStart = cumulativeInflation;
     cumulativeInflation = cumulativeInflation * Math.pow(1 + phaseInflation / 100, duration);
 
     result.push({
@@ -433,6 +435,7 @@ export function computePlan(plan: PlanInput): PlanComputed {
       elements: orderedElements.map((e) => ecById.get(e.id)!),
       startWealthNominal,
       endWealthNominal,
+      cumulativeInflationStart,
       cumulativeInflationEnd: cumulativeInflation,
       endWealthReal: endWealthNominal / cumulativeInflation,
     });