feat: add vitals history analytics to recovery dashboard

- Integrated the `build_vitals_history_and_analytics` function into the recovery dashboard to provide historical insights on vital signs.
- Updated the `get_recovery_dashboard_viz_bundle` function to include a new chart for vitals history, enhancing the data visualization capabilities.
- Enhanced the `RecoveryDashboardOverview` component to render vitals history, including improved messaging for insufficient data and visual representation of trends.

backend/data_layer/recovery_viz.py

@@ -14,6 +14,7 @@ from data_layer.recovery_chart_payloads import (
     build_sleep_duration_quality_chart_payload,
     build_vital_signs_matrix_chart_payload,
 )
+from data_layer.vitals_fitness_insights import build_vitals_history_and_analytics
 from data_layer.recovery_interpretation import (
     build_recovery_dashboard_kpi_tiles,
     build_recovery_progress_insights,
@@ -88,6 +89,7 @@ def get_recovery_dashboard_viz_bundle(profile_id: str, days: int) -> Dict[str, A
         "sleep_duration_quality": build_sleep_duration_quality_chart_payload(profile_id, chart_days),
         "sleep_debt": build_sleep_debt_chart_payload(profile_id, chart_days),
         "vital_signs_matrix": build_vital_signs_matrix_chart_payload(profile_id, vital_days),
+        "vitals_history": build_vitals_history_and_analytics(profile_id, vital_days),
     }
 
     conf = "medium"

backend/data_layer/vitals_fitness_insights.py

@@ -0,0 +1,280 @@
+"""
+Vitalwerte: Zeitreihen + einfache Fitness-/Recovery-Einordnung (Layer 1, Issue 53).
+
+Keine Diagnose — deskriptive Trends, Korrelationen und Varianz-Hinweise.
+"""
+
+from __future__ import annotations
+
+import statistics
+from datetime import datetime, timedelta
+from typing import Any, Dict, List, Optional, Sequence, Tuple
+
+from db import get_db, get_cursor
+from data_layer.utils import safe_float, serialize_dates
+
+SERIES_CONFIG = (
+    ("resting_hr", "Ruhepuls", "bpm", "#3B82F6"),
+    ("hrv", "HRV", "ms", "#1D9E75"),
+    ("vo2_max", "VO2max", "ml/kg/min", "#8B5CF6"),
+    ("spo2", "SpO2", "%", "#0EA5E9"),
+    ("respiratory_rate", "Atemfrequenz", "/min", "#F59E0B"),
+)
+
+
+def _date_to_ord(d: Any) -> float:
+    if hasattr(d, "toordinal"):
+        return float(d.toordinal())
+    if isinstance(d, str):
+        return float(datetime.fromisoformat(d[:10]).date().toordinal())
+    return 0.0
+
+
+def _linear_slope(dates: Sequence[Any], values: Sequence[float]) -> float:
+    if len(values) < 3 or len(dates) != len(values):
+        return 0.0
+    xs = [_date_to_ord(d) for d in dates]
+    ys = list(values)
+    n = len(xs)
+    mx = sum(xs) / n
+    my = sum(ys) / n
+    den = sum((x - mx) ** 2 for x in xs)
+    if den < 1e-9:
+        return 0.0
+    return sum((x - mx) * (y - my) for x, y in zip(xs, ys)) / den
+
+
+def _pearson(xs: Sequence[float], ys: Sequence[float]) -> Optional[float]:
+    n = len(xs)
+    if n < 5 or len(ys) != n:
+        return None
+    mx = statistics.mean(xs)
+    my = statistics.mean(ys)
+    sx = statistics.pstdev(xs) if n > 1 else 0.0
+    sy = statistics.pstdev(ys) if n > 1 else 0.0
+    if sx < 1e-9 or sy < 1e-9:
+        return None
+    cov = sum((x - mx) * (y - my) for x, y in zip(xs, ys)) / n
+    return cov / (sx * sy)
+
+
+def _daily_training_load(cur: Any, profile_id: str, cutoff: str) -> Dict[str, float]:
+    """Summe Trainingsminuten pro Kalendertag als Belastungs-Proxy."""
+    cur.execute(
+        """
+        SELECT date::text AS d, COALESCE(SUM(duration_min), 0)::float AS minutes
+        FROM activity_log
+        WHERE profile_id = %s AND date >= %s::date AND duration_min IS NOT NULL AND duration_min > 0
+        GROUP BY date
+        ORDER BY date
+        """,
+        (profile_id, cutoff),
+    )
+    rows = cur.fetchall()
+    return {r["d"]: float(r["minutes"]) for r in rows}
+
+
+def _rhr_by_date(cur: Any, profile_id: str, cutoff: str) -> Dict[str, float]:
+    cur.execute(
+        """
+        SELECT date::text AS d, resting_hr::float AS rhr
+        FROM vitals_baseline
+        WHERE profile_id = %s AND date >= %s::date AND resting_hr IS NOT NULL
+        ORDER BY date
+        """,
+        (profile_id, cutoff),
+    )
+    return {r["d"]: float(r["rhr"]) for r in cur.fetchall()}
+
+
+def build_vitals_history_and_analytics(profile_id: str, days: int) -> Dict[str, Any]:
+    """
+    Zeitreihen pro Kennzahl (eigene Einheit / eigene Skala im Frontend) + Kurz-Analytik.
+    """
+    if days < 7:
+        days = 7
+    if days > 365:
+        days = 365
+    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute(
+            """
+            SELECT date, resting_hr, hrv, vo2_max, spo2, respiratory_rate
+            FROM vitals_baseline
+            WHERE profile_id = %s AND date >= %s
+            ORDER BY date ASC
+            """,
+            (profile_id, cutoff),
+        )
+        rows = cur.fetchall()
+
+    series: Dict[str, Any] = {}
+    for key, label_de, unit, color in SERIES_CONFIG:
+        pts: List[Dict[str, Any]] = []
+        dates: List[Any] = []
+        vals: List[float] = []
+        for r in rows:
+            v = r.get(key)
+            if v is None:
+                continue
+            fv = safe_float(v)
+            d = r["date"]
+            d_iso = d.isoformat() if hasattr(d, "isoformat") else str(d)[:10]
+            pts.append({"date": d_iso, "value": round(fv, 2)})
+            dates.append(d)
+            vals.append(fv)
+        if pts:
+            series[key] = {
+                "key": key,
+                "label_de": label_de,
+                "unit": unit,
+                "color": color,
+                "points": pts,
+                "n": len(pts),
+                "last": vals[-1] if vals else None,
+                "mean": round(statistics.mean(vals), 2) if len(vals) >= 1 else None,
+                "stdev": round(statistics.pstdev(vals), 2) if len(vals) >= 2 else None,
+                "slope_per_day": round(_linear_slope(dates, vals), 6) if len(vals) >= 3 else None,
+            }
+
+    bullets: List[Dict[str, Any]] = []
+
+    # VO2max-Trend
+    vo2 = series.get("vo2_max")
+    if vo2 and vo2.get("n", 0) >= 4 and vo2.get("slope_per_day") is not None:
+        s = vo2["slope_per_day"]
+        if s > 0.002:
+            bullets.append(
+                {
+                    "key": "vo2_trend_up",
+                    "tone": "good",
+                    "title": "VO2max-Verlauf",
+                    "body": "Im gewählten Fenster steigt der erfasste VO2max tendenziell — häufig mit Trainingsreiz oder besserer Datenlage vereinbar.",
+                }
+            )
+        elif s < -0.002:
+            bullets.append(
+                {
+                    "key": "vo2_trend_down",
+                    "tone": "warn",
+                    "title": "VO2max-Verlauf",
+                    "body": "VO2max zeigt im Fenster einen fallenden Trend — kann z. B. durch Pause, Krankheit oder Messrauschen entstehen; Verlauf beobachten.",
+                }
+            )
+
+    # Ruhepuls: letzte 7 vs davor (wenn genug Punkte)
+    rhr = series.get("resting_hr")
+    if rhr and rhr.get("points"):
+        pts = rhr["points"]
+        if len(pts) >= 10:
+            last7 = [p["value"] for p in pts[-7:]]
+            before = [p["value"] for p in pts[:-7][-14:]] if len(pts) > 7 else []
+            if before:
+                m7 = statistics.mean(last7)
+                mb = statistics.mean(before)
+                diff = m7 - mb
+                if diff > 3:
+                    bullets.append(
+                        {
+                            "key": "rhr_short_high",
+                            "tone": "warn",
+                            "title": "Ruhepuls zuletzt höher",
+                            "body": f"Die letzten 7 Messungen liegen im Mittel ca. {diff:.1f} bpm über dem vorangehenden Fenster — kann mit Belastung, Stress, Schlaf oder Infekt zusammenhängen.",
+                        }
+                    )
+                elif diff < -3:
+                    bullets.append(
+                        {
+                            "key": "rhr_short_low",
+                            "tone": "good",
+                            "title": "Ruhepuls zuletzt niedriger",
+                            "body": "Der Ruhepuls liegt im kurzen Vergleich unter dem vorherigen Mittel — oft mit Entlastung oder besserer Regeneration vereinbar (individuell).",
+                        }
+                    )
+        if rhr.get("stdev") is not None and rhr["n"] >= 6:
+            bullets.append(
+                {
+                    "key": "rhr_var",
+                    "tone": "neutral",
+                    "title": "Schwankung Ruhepuls",
+                    "body": f"Standardabweichung im Fenster ca. {rhr['stdev']} bpm — kurzfristige Schwankungen sind normal; extreme Sprünge mit Kontext (Training, Schlaf) betrachten.",
+                }
+            )
+
+    # HRV: Varianz-Hinweis
+    hrv_s = series.get("hrv")
+    if hrv_s and hrv_s.get("stdev") and hrv_s["n"] >= 6:
+        bullets.append(
+            {
+                "key": "hrv_var",
+                "tone": "neutral",
+                "title": "HRV-Schwankung",
+                "body": f"HRV schwankt im Fenster (σ ≈ {hrv_s['stdev']} ms). Vergleich mit der eigenen Basis ist aussagekräftiger als Einzelwerte.",
+            }
+        )
+
+    # Belastung (Activity) vs Ruhepuls am Folgetag
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        load_by_d = _daily_training_load(cur, profile_id, cutoff)
+        rhr_by_d = _rhr_by_date(cur, profile_id, cutoff)
+
+    pairs_load: List[float] = []
+    pairs_rhr: List[float] = []
+    for d_str, load_min in load_by_d.items():
+        try:
+            d0 = datetime.fromisoformat(d_str[:10]).date()
+        except ValueError:
+            continue
+        d1 = (d0 + timedelta(days=1)).isoformat()
+        if d1 in rhr_by_d and load_min > 0:
+            pairs_load.append(load_min)
+            pairs_rhr.append(rhr_by_d[d1])
+
+    r_pearson = _pearson(pairs_load, pairs_rhr) if len(pairs_load) >= 8 else None
+    if r_pearson is not None:
+        if r_pearson > 0.35:
+            bullets.append(
+                {
+                    "key": "load_rhr_pos",
+                    "tone": "warn",
+                    "title": "Belastung und Ruhepuls (Folgetag)",
+                    "body": "An Tagen nach höherer Trainingsdauer (Minuten-Summe) steigt der Ruhepuls am nächsten Morgen in deinen Daten tendenziell — typisches Muster während Erholungsreaktion (kein Kausalbeweis).",
+                }
+            )
+        elif r_pearson < -0.25:
+            bullets.append(
+                {
+                    "key": "load_rhr_neg",
+                    "tone": "neutral",
+                    "title": "Belastung und Ruhepuls",
+                    "body": "Es zeigt sich ein leicht negatives Zusammenspiel zwischen Tages-Belastung und Folge-Ruhepuls in diesem Fenster — stark von Datenlage und Ausreißern abhängig.",
+                }
+            )
+
+    if not series:
+        return {
+            "chart_type": "vitals_dashboard",
+            "window_days": days,
+            "series": {},
+            "analytics": {"bullets": []},
+            "metadata": {
+                "confidence": "insufficient",
+                "message": "Keine Vital-Zeitreihen im Fenster",
+            },
+        }
+
+    return {
+        "chart_type": "vitals_dashboard",
+        "window_days": days,
+        "series": serialize_dates(series),
+        "analytics": {"bullets": bullets},
+        "metadata": {
+            "confidence": "medium",
+            "note": "Deskriptive Auswertung; keine medizinische Diagnose.",
+            "load_rhr_pairs_n": len(pairs_load),
+            "load_rhr_correlation": round(r_pearson, 3) if r_pearson is not None else None,
+        },
+    }

frontend/src/components/RecoveryDashboardOverview.jsx

@@ -1,17 +1,6 @@
 import { useState, useEffect } from 'react'
 import { useNavigate } from 'react-router-dom'
-import {
-  LineChart,
-  Line,
-  BarChart,
-  Bar,
-  Cell,
-  XAxis,
-  YAxis,
-  Tooltip,
-  ResponsiveContainer,
-  CartesianGrid,
-} from 'recharts'
+import { LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer, CartesianGrid } from 'recharts'
 import { api } from '../utils/api'
 import KpiTilesOverview from './KpiTilesOverview'
 import { getStatusColor, getStatusBg } from '../utils/interpret'
@@ -19,19 +8,11 @@ import dayjs from 'dayjs'
 
 const fmtDate = (d) => dayjs(d).format('DD.MM.')
 
-function vitalToneToUi(tone) {
-  if (tone === 'good') return 'good'
-  if (tone === 'bad') return 'bad'
-  if (tone === 'neutral') return 'neutral'
-  return 'warn'
-}
-
-function barFillForTone(tone) {
-  const ui = vitalToneToUi(tone)
-  if (ui === 'good') return '#1D9E75'
-  if (ui === 'bad') return '#D85A30'
-  if (ui === 'neutral') return '#6B7280'
-  return '#EF9F27'
+function insightBulletStripe(tone) {
+  if (tone === 'good') return getStatusColor('good')
+  if (tone === 'bad') return getStatusColor('bad')
+  if (tone === 'neutral') return '#6B7280'
+  return getStatusColor('warn')
 }
 
 function ChartCard({ title, loading, error, children }) {
@@ -127,6 +108,7 @@ export default function RecoveryDashboardOverview({
   const sleepData = viz.charts?.sleep_duration_quality
   const debtData = viz.charts?.sleep_debt
   const vitalsData = viz.charts?.vital_signs_matrix
+  const vitalsHistory = viz.charts?.vitals_history
 
   const kpiTiles = (viz.kpi_tiles || []).map((t) => ({
     ...t,
@@ -315,51 +297,146 @@ export default function RecoveryDashboardOverview({
     )
   }
 
+  const renderVitalsHistory = () => {
+    const vh = vitalsHistory
+    if (!vh) {
+      return <div style={{ padding: 16, fontSize: 12, color: 'var(--text3)' }}>Keine Verlaufs-Daten (Bundle).</div>
+    }
+    if (vh.metadata?.confidence === 'insufficient') {
+      return (
+        <div style={{ padding: 16, fontSize: 12, color: 'var(--text3)', lineHeight: 1.5 }}>
+          {vh.metadata?.message || 'Zu wenige Vitaldaten im gewählten Fenster für Verläufe.'}
+        </div>
+      )
+    }
+    const series = vh.series || {}
+    const keys = Object.keys(series)
+    const bullets = vh.analytics?.bullets || []
+    const corrNote = vh.metadata?.load_rhr_correlation
+    const pairsN = vh.metadata?.load_rhr_pairs_n
+
+    return (
+      <div style={{ width: '100%', minWidth: 0 }}>
+        {bullets.length > 0 ? (
+          <div style={{ marginBottom: 14 }}>
+            <div style={{ fontSize: 12, fontWeight: 600, color: 'var(--text3)', marginBottom: 8 }}>
+              Einordnung (Vital & Belastung)
+            </div>
+            <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
+              {bullets.map((b) => (
+                <div
+                  key={b.key}
+                  style={{
+                    borderRadius: 8,
+                    padding: '10px 12px',
+                    border: '1px solid var(--border)',
+                    borderLeft: `4px solid ${insightBulletStripe(b.tone)}`,
+                    background: 'var(--surface2)',
+                  }}
+                >
+                  <div style={{ fontSize: 12, fontWeight: 600, marginBottom: 4 }}>{b.title}</div>
+                  <div style={{ fontSize: 12, color: 'var(--text2)', lineHeight: 1.45 }}>{b.body}</div>
+                </div>
+              ))}
+            </div>
+            {corrNote != null && pairsN != null ? (
+              <div style={{ marginTop: 8, fontSize: 10, color: 'var(--text3)' }}>
+                Korrelation Trainingsminuten (Tag) ↔ Ruhepuls (Folgetag): r ≈ {corrNote} (n = {pairsN} Paare)
+              </div>
+            ) : null}
+          </div>
+        ) : null}
+
+        <div style={{ fontSize: 11, color: 'var(--text3)', marginBottom: 8 }}>
+          Je Kennzahl eigene Skala (physische Einheit). Verlauf sinnvoll ab ca. 2–3 Messpunkten.
+        </div>
+
+        {keys.map((k) => {
+          const m = series[k]
+          const pts = m.points || []
+          if (pts.length === 0) return null
+          const chartData = pts.map((p) => ({
+            ...p,
+            d: fmtDate(p.date),
+          }))
+          const vals = pts.map((p) => p.value)
+          const mn = Math.min(...vals)
+          const mx = Math.max(...vals)
+          const span = mx - mn
+          const pad = span < 1e-9 ? Math.max(Math.abs(mn) * 0.05, 0.5) : span * 0.12
+
+          return (
+            <div key={k} style={{ marginBottom: 16, width: '100%' }}>
+              <div style={{ fontSize: 11, fontWeight: 600, color: 'var(--text2)', marginBottom: 4 }}>
+                {m.label_de} ({m.unit})
+                {m.n != null ? (
+                  <span style={{ fontWeight: 400, color: 'var(--text3)' }}> · n = {m.n}</span>
+                ) : null}
+                {m.mean != null ? (
+                  <span style={{ fontWeight: 400, color: 'var(--text3)' }}> · Ø {m.mean}</span>
+                ) : null}
+              </div>
+              {pts.length === 1 ? (
+                <div style={{ fontSize: 12, color: 'var(--text3)', padding: '8px 0' }}>
+                  Ein Messpunkt ({m.last}) — weiter erfassen, um einen Verlauf zu sehen.
+                </div>
+              ) : (
+                <div style={{ width: '100%', height: 200, minHeight: 200 }}>
+                  <ResponsiveContainer width="100%" height="100%">
+                    <LineChart data={chartData} margin={{ top: 4, right: 12, bottom: 0, left: 0 }}>
+                      <CartesianGrid stroke="var(--border)" strokeDasharray="3 3" />
+                      <XAxis dataKey="d" tick={{ fontSize: 9, fill: 'var(--text3)' }} interval="preserveStartEnd" />
+                      <YAxis
+                        domain={[mn - pad, mx + pad]}
+                        tick={{ fontSize: 9, fill: 'var(--text3)' }}
+                        width={44}
+                      />
+                      <Tooltip
+                        contentStyle={{
+                          background: 'var(--surface)',
+                          border: '1px solid var(--border)',
+                          borderRadius: 8,
+                          fontSize: 11,
+                        }}
+                      />
+                      <Line
+                        type="monotone"
+                        dataKey="value"
+                        stroke={m.color || '#1D9E75'}
+                        strokeWidth={2}
+                        dot={{ r: 3 }}
+                        name={m.label_de}
+                      />
+                    </LineChart>
+                  </ResponsiveContainer>
+                </div>
+              )}
+            </div>
+          )
+        })}
+
+        {keys.length === 0 ? (
+          <div style={{ padding: 12, fontSize: 12, color: 'var(--text3)' }}>Keine Vital-Zeitreihen im Fenster.</div>
+        ) : null}
+      </div>
+    )
+  }
+
   const renderVitalSigns = () => {
     if (!vitalsData) {
       return (
         <div style={{ padding: 20, textAlign: 'center', color: 'var(--text3)', fontSize: 12 }}>
-          Keine Vital-Matrix-Daten
+          Keine Snapshot-Daten zur Vital-Matrix.
         </div>
       )
     }
     const meta = vitalsData.metadata || {}
     const items = meta.vital_items || []
-    const ds0 = vitalsData.data?.datasets?.[0]
-    const hasRawChart =
-      Array.isArray(vitalsData.data?.labels) &&
-      vitalsData.data.labels.length > 0 &&
-      Array.isArray(ds0?.data) &&
-      ds0.data.length > 0
     const ins = meta.confidence === 'insufficient'
-    if (ins && items.length === 0 && !hasRawChart) {
+    if (ins && items.length === 0) {
       return (
         <div style={{ padding: 20, textAlign: 'center', color: 'var(--text3)', fontSize: 12 }}>
-          {meta.message || 'Keine aktuellen Vitalwerte'}
-        </div>
-      )
-    }
-
-    let chartRows = items.map((it) => ({
-      name: it.label_de,
-      value: Number(it.bar_value ?? 0),
-      fill: barFillForTone(it.tone),
-      tone: it.tone,
-    }))
-    if (chartRows.length === 0 && hasRawChart) {
-      const bg = ds0.backgroundColor
-      chartRows = vitalsData.data.labels.map((name, i) => ({
-        name,
-        value: Number(ds0.data[i] ?? 0),
-        fill: Array.isArray(bg) ? bg[i] || '#1D9E75' : bg || '#1D9E75',
-        tone: 'neutral',
-      }))
-    }
-
-    if (items.length === 0 && chartRows.length === 0) {
-      return (
-        <div style={{ padding: 20, textAlign: 'center', color: 'var(--text3)', fontSize: 12 }}>
-          Keine Vitalwerte zur Anzeige (Server lieferte weder Kennzeilen noch Diagrammdaten).
+          {meta.message || 'Keine zusammengefassten Vitalwerte für die Einordnung.'}
         </div>
       )
     }
@@ -424,54 +501,19 @@ export default function RecoveryDashboardOverview({
           </div>
         ) : null}
 
-        {items.length === 0 && chartRows.length > 0 ? (
-          <div style={{ fontSize: 11, color: 'var(--text3)', marginBottom: 8 }}>
-            Diagramm aus Server-Daten (ohne Zonen-Detail — bitte App aktualisieren oder Cache leeren).
-          </div>
-        ) : null}
-
-        {chartRows.length > 0 ? (
-          <>
-            <div style={{ fontSize: 11, color: 'var(--text3)', marginBottom: 6 }}>
-              Relative Einordnung (0–100, nur Übersicht — keine körperliche Messgröße)
-            </div>
-            <ResponsiveContainer width="100%" height={Math.max(200, chartRows.length * 36)}>
-              <BarChart data={chartRows} margin={{ top: 4, right: 8, bottom: 0, left: 8 }} layout="horizontal">
-                <CartesianGrid stroke="var(--border)" strokeDasharray="3 3" />
-                <XAxis type="number" tick={{ fontSize: 9, fill: 'var(--text3)' }} tickLine={false} domain={[0, 100]} />
-                <YAxis type="category" dataKey="name" tick={{ fontSize: 9, fill: 'var(--text3)' }} tickLine={false} width={100} />
-                <Tooltip
-                  contentStyle={{
-                    background: 'var(--surface)',
-                    border: '1px solid var(--border)',
-                    borderRadius: 8,
-                    fontSize: 11,
-                  }}
-                  formatter={(v) => [`${Number(v).toFixed(0)} (relativ)`, 'Einordnung']}
-                />
-                <Bar dataKey="value" name="Einordnung" radius={[0, 3, 3, 0]}>
-                  {chartRows.map((row, i) => (
-                    <Cell key={`c-${i}`} fill={row.fill} />
-                  ))}
-                </Bar>
-              </BarChart>
-            </ResponsiveContainer>
-          </>
-        ) : null}
-
         <div style={{ marginTop: 10, fontSize: 10, color: 'var(--text3)', lineHeight: 1.45 }}>
           {vitDate ? (
             <>
-              Baseline-Vitals Stand: <strong>{fmtDate(vitDate)}</strong>
+              Baseline-Vitals (Snapshot): <strong>{fmtDate(vitDate)}</strong>
             </>
           ) : null}
           {vitDate && bpDate ? ' · ' : null}
           {bpDate ? (
             <>
-              Blutdruck Stand: <strong>{fmtDate(bpDate)}</strong>
+              Blutdruck: <strong>{fmtDate(bpDate)}</strong>
             </>
           ) : null}
-          {!vitDate && !bpDate ? <>Anzeige-Zeitraum Vital-Matrix: {vDays} Tage</> : null}
+          {!vitDate && !bpDate ? <>Bezug: Vital-Matrix {vDays} Tage</> : null}
         </div>
         {disclaimer ? (
           <div style={{ marginTop: 8, fontSize: 10, color: 'var(--text3)', fontStyle: 'italic' }}>{disclaimer}</div>
@@ -538,9 +580,10 @@ export default function RecoveryDashboardOverview({
 
       <ChartCard title="📊 Recovery Score">{renderRecoveryScore()}</ChartCard>
       <ChartCard title="📊 HRV & Ruhepuls">{renderHrvRhr()}</ChartCard>
+      <ChartCard title="📈 Vitalwerte — Verlauf (je Kennzahl)">{renderVitalsHistory()}</ChartCard>
       <ChartCard title="📊 Schlaf: Dauer & Qualität">{renderSleepQuality()}</ChartCard>
       <ChartCard title="📊 Schlafschuld">{renderSleepDebt()}</ChartCard>
-      <ChartCard title="📊 Vitalwerte Überblick">{renderVitalSigns()}</ChartCard>
+      <ChartCard title="📋 Vitalwerte — aktuelle Einordnung">{renderVitalSigns()}</ChartCard>
     </div>
   )
 }