feat: v9d Phase 2b - Sleep Module Core (Schlaf-Modul)

- Add sleep_log table with JSONB sleep_segments (Migration 009)
- Add sleep router with CRUD + stats endpoints (7d avg, 14d debt, trend, phases)
- Add SleepPage with quick/detail entry forms and inline edit
- Add SleepWidget to Dashboard showing last night + 7d average
- Add sleep navigation entry with Moon icon
- Register sleep router in main.py
- Add 9 new API methods in api.js

Phase 2b complete - ready for testing on dev

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/main.py

@@ -20,7 +20,7 @@ from routers import activity, nutrition, photos, insights, prompts
 from routers import admin, stats, exportdata, importdata
 from routers import subscription, coupons, features, tiers_mgmt, tier_limits
 from routers import user_restrictions, access_grants, training_types, admin_training_types
-from routers import admin_activity_mappings
+from routers import admin_activity_mappings, sleep
 
 # ── App Configuration ─────────────────────────────────────────────────────────
 DATA_DIR   = Path(os.getenv("DATA_DIR",   "./data"))
@@ -86,10 +86,11 @@ app.include_router(tier_limits.router)    # /api/tier-limits (admin)
 app.include_router(user_restrictions.router)  # /api/user-restrictions (admin)
 app.include_router(access_grants.router)  # /api/access-grants (admin)
 
-# v9d Training Types
+# v9d Training Types & Sleep Module
 app.include_router(training_types.router)       # /api/training-types/*
 app.include_router(admin_training_types.router) # /api/admin/training-types/*
 app.include_router(admin_activity_mappings.router) # /api/admin/activity-mappings/*
+app.include_router(sleep.router)                # /api/sleep/* (v9d Phase 2b)
 
 # ── Health Check ──────────────────────────────────────────────────────────────
 @app.get("/")

backend/migrations/009_sleep_log.sql

@@ -0,0 +1,31 @@
+-- Migration 009: Sleep Log Table
+-- v9d Phase 2b: Sleep Module Core
+-- Date: 2026-03-22
+
+CREATE TABLE IF NOT EXISTS sleep_log (
+    id SERIAL PRIMARY KEY,
+    profile_id VARCHAR(36) NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date DATE NOT NULL,
+    bedtime TIME,
+    wake_time TIME,
+    duration_minutes INTEGER NOT NULL CHECK (duration_minutes > 0),
+    quality INTEGER CHECK (quality >= 1 AND quality <= 5),
+    wake_count INTEGER CHECK (wake_count >= 0),
+    deep_minutes INTEGER CHECK (deep_minutes >= 0),
+    rem_minutes INTEGER CHECK (rem_minutes >= 0),
+    light_minutes INTEGER CHECK (light_minutes >= 0),
+    awake_minutes INTEGER CHECK (awake_minutes >= 0),
+    sleep_segments JSONB,
+    note TEXT,
+    source VARCHAR(20) DEFAULT 'manual' CHECK (source IN ('manual', 'apple_health', 'garmin')),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT unique_sleep_per_day UNIQUE(profile_id, date)
+);
+
+CREATE INDEX idx_sleep_profile_date ON sleep_log(profile_id, date DESC);
+
+-- Comments for documentation
+COMMENT ON TABLE sleep_log IS 'v9d Phase 2b: Daily sleep tracking with phase data';
+COMMENT ON COLUMN sleep_log.date IS 'Date of the night (wake date, not bedtime date)';
+COMMENT ON COLUMN sleep_log.sleep_segments IS 'Raw phase segments: [{"phase": "deep", "start": "23:44", "duration_min": 42}, ...]';

backend/routers/sleep.py

@@ -0,0 +1,418 @@
+"""
+Sleep Module Router (v9d Phase 2b)
+
+Endpoints:
+- CRUD: list, create/upsert, update, delete
+- Stats: 7-day average, trends, phase distribution, sleep debt
+- Correlations: sleep ↔ resting HR, training, weight (Phase 2e)
+"""
+from fastapi import APIRouter, Depends, HTTPException, UploadFile, File
+from pydantic import BaseModel
+from typing import Literal
+from datetime import datetime, timedelta
+
+from auth import require_auth
+from db import get_db, get_cursor
+
+router = APIRouter(prefix="/api/sleep", tags=["sleep"])
+
+# ── Models ────────────────────────────────────────────────────────────────────
+
+class SleepCreate(BaseModel):
+    date: str  # YYYY-MM-DD
+    bedtime: str | None = None  # HH:MM
+    wake_time: str | None = None  # HH:MM
+    duration_minutes: int
+    quality: int | None = None  # 1-5
+    wake_count: int | None = None
+    deep_minutes: int | None = None
+    rem_minutes: int | None = None
+    light_minutes: int | None = None
+    awake_minutes: int | None = None
+    note: str = ""
+    source: Literal['manual', 'apple_health', 'garmin'] = 'manual'
+
+class SleepResponse(BaseModel):
+    id: int
+    profile_id: str
+    date: str
+    bedtime: str | None
+    wake_time: str | None
+    duration_minutes: int
+    duration_formatted: str
+    quality: int | None
+    wake_count: int | None
+    deep_minutes: int | None
+    rem_minutes: int | None
+    light_minutes: int | None
+    awake_minutes: int | None
+    sleep_segments: list | None
+    sleep_efficiency: float | None
+    deep_percent: float | None
+    rem_percent: float | None
+    note: str
+    source: str
+    created_at: str
+
+class SleepStatsResponse(BaseModel):
+    avg_duration_minutes: float
+    avg_quality: float | None
+    total_nights: int
+    nights_below_goal: int
+    sleep_goal_minutes: int
+
+class SleepDebtResponse(BaseModel):
+    sleep_debt_minutes: int
+    sleep_debt_formatted: str
+    days_analyzed: int
+    sleep_goal_minutes: int
+
+# ── Helper Functions ──────────────────────────────────────────────────────────
+
+def format_duration(minutes: int) -> str:
+    """Convert minutes to 'Xh Ymin' format."""
+    hours = minutes // 60
+    mins = minutes % 60
+    return f"{hours}h {mins}min"
+
+def calculate_sleep_efficiency(duration_min: int, awake_min: int | None) -> float | None:
+    """Sleep efficiency = duration / (duration + awake) * 100."""
+    if awake_min is None or awake_min == 0:
+        return None
+    total = duration_min + awake_min
+    return round((duration_min / total) * 100, 1) if total > 0 else None
+
+def calculate_phase_percent(phase_min: int | None, duration_min: int) -> float | None:
+    """Calculate phase percentage of total duration."""
+    if phase_min is None or duration_min == 0:
+        return None
+    return round((phase_min / duration_min) * 100, 1)
+
+def row_to_sleep_response(row: dict) -> SleepResponse:
+    """Convert DB row to SleepResponse."""
+    return SleepResponse(
+        id=row['id'],
+        profile_id=row['profile_id'],
+        date=str(row['date']),
+        bedtime=str(row['bedtime']) if row['bedtime'] else None,
+        wake_time=str(row['wake_time']) if row['wake_time'] else None,
+        duration_minutes=row['duration_minutes'],
+        duration_formatted=format_duration(row['duration_minutes']),
+        quality=row['quality'],
+        wake_count=row['wake_count'],
+        deep_minutes=row['deep_minutes'],
+        rem_minutes=row['rem_minutes'],
+        light_minutes=row['light_minutes'],
+        awake_minutes=row['awake_minutes'],
+        sleep_segments=row['sleep_segments'],
+        sleep_efficiency=calculate_sleep_efficiency(row['duration_minutes'], row['awake_minutes']),
+        deep_percent=calculate_phase_percent(row['deep_minutes'], row['duration_minutes']),
+        rem_percent=calculate_phase_percent(row['rem_minutes'], row['duration_minutes']),
+        note=row['note'] or "",
+        source=row['source'],
+        created_at=str(row['created_at'])
+    )
+
+# ── CRUD Endpoints ────────────────────────────────────────────────────────────
+
+@router.get("")
+def list_sleep(
+    limit: int = 90,
+    session: dict = Depends(require_auth)
+):
+    """List sleep entries for current profile (last N days)."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute("""
+            SELECT * FROM sleep_log
+            WHERE profile_id = %s
+            ORDER BY date DESC
+            LIMIT %s
+        """, (pid, limit))
+        rows = cur.fetchall()
+
+    return [row_to_sleep_response(row) for row in rows]
+
+@router.get("/by-date/{date}")
+def get_sleep_by_date(
+    date: str,
+    session: dict = Depends(require_auth)
+):
+    """Get sleep entry for specific date."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute("""
+            SELECT * FROM sleep_log
+            WHERE profile_id = %s AND date = %s
+        """, (pid, date))
+        row = cur.fetchone()
+
+    if not row:
+        raise HTTPException(404, "No sleep entry for this date")
+
+    return row_to_sleep_response(row)
+
+@router.post("")
+def create_sleep(
+    data: SleepCreate,
+    session: dict = Depends(require_auth)
+):
+    """Create or update sleep entry (upsert by date)."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+
+        # Upsert: INSERT ... ON CONFLICT DO UPDATE
+        cur.execute("""
+            INSERT INTO sleep_log (
+                profile_id, date, bedtime, wake_time, duration_minutes,
+                quality, wake_count, deep_minutes, rem_minutes, light_minutes,
+                awake_minutes, note, source, updated_at
+            ) VALUES (
+                %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, CURRENT_TIMESTAMP
+            )
+            ON CONFLICT (profile_id, date) DO UPDATE SET
+                bedtime = EXCLUDED.bedtime,
+                wake_time = EXCLUDED.wake_time,
+                duration_minutes = EXCLUDED.duration_minutes,
+                quality = EXCLUDED.quality,
+                wake_count = EXCLUDED.wake_count,
+                deep_minutes = EXCLUDED.deep_minutes,
+                rem_minutes = EXCLUDED.rem_minutes,
+                light_minutes = EXCLUDED.light_minutes,
+                awake_minutes = EXCLUDED.awake_minutes,
+                note = EXCLUDED.note,
+                source = EXCLUDED.source,
+                updated_at = CURRENT_TIMESTAMP
+            RETURNING *
+        """, (
+            pid, data.date, data.bedtime, data.wake_time, data.duration_minutes,
+            data.quality, data.wake_count, data.deep_minutes, data.rem_minutes,
+            data.light_minutes, data.awake_minutes, data.note, data.source
+        ))
+
+        row = cur.fetchone()
+        conn.commit()
+
+    return row_to_sleep_response(row)
+
+@router.put("/{id}")
+def update_sleep(
+    id: int,
+    data: SleepCreate,
+    session: dict = Depends(require_auth)
+):
+    """Update existing sleep entry by ID."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+
+        cur.execute("""
+            UPDATE sleep_log SET
+                date = %s,
+                bedtime = %s,
+                wake_time = %s,
+                duration_minutes = %s,
+                quality = %s,
+                wake_count = %s,
+                deep_minutes = %s,
+                rem_minutes = %s,
+                light_minutes = %s,
+                awake_minutes = %s,
+                note = %s,
+                updated_at = CURRENT_TIMESTAMP
+            WHERE id = %s AND profile_id = %s
+            RETURNING *
+        """, (
+            data.date, data.bedtime, data.wake_time, data.duration_minutes,
+            data.quality, data.wake_count, data.deep_minutes, data.rem_minutes,
+            data.light_minutes, data.awake_minutes, data.note, id, pid
+        ))
+
+        row = cur.fetchone()
+        if not row:
+            raise HTTPException(404, "Sleep entry not found")
+
+        conn.commit()
+
+    return row_to_sleep_response(row)
+
+@router.delete("/{id}")
+def delete_sleep(
+    id: int,
+    session: dict = Depends(require_auth)
+):
+    """Delete sleep entry."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute("""
+            DELETE FROM sleep_log
+            WHERE id = %s AND profile_id = %s
+        """, (id, pid))
+        conn.commit()
+
+    return {"deleted": id}
+
+# ── Stats Endpoints ───────────────────────────────────────────────────────────
+
+@router.get("/stats")
+def get_sleep_stats(
+    days: int = 7,
+    session: dict = Depends(require_auth)
+):
+    """Get sleep statistics (average duration, quality, nights below goal)."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+
+        # Get sleep goal from profile
+        cur.execute("SELECT sleep_goal_minutes FROM profiles WHERE id = %s", (pid,))
+        profile = cur.fetchone()
+        sleep_goal = profile['sleep_goal_minutes'] if profile and profile['sleep_goal_minutes'] else 450
+
+        # Calculate stats
+        cur.execute("""
+            SELECT
+                AVG(duration_minutes)::FLOAT as avg_duration,
+                AVG(quality)::FLOAT as avg_quality,
+                COUNT(*) as total_nights,
+                COUNT(CASE WHEN duration_minutes < %s THEN 1 END) as nights_below_goal
+            FROM sleep_log
+            WHERE profile_id = %s
+              AND date >= CURRENT_DATE - INTERVAL '%s days'
+        """, (sleep_goal, pid, days))
+
+        stats = cur.fetchone()
+
+    return SleepStatsResponse(
+        avg_duration_minutes=round(stats['avg_duration'], 1) if stats['avg_duration'] else 0,
+        avg_quality=round(stats['avg_quality'], 1) if stats['avg_quality'] else None,
+        total_nights=stats['total_nights'],
+        nights_below_goal=stats['nights_below_goal'],
+        sleep_goal_minutes=sleep_goal
+    )
+
+@router.get("/debt")
+def get_sleep_debt(
+    days: int = 14,
+    session: dict = Depends(require_auth)
+):
+    """Calculate sleep debt over last N days."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+
+        # Get sleep goal
+        cur.execute("SELECT sleep_goal_minutes FROM profiles WHERE id = %s", (pid,))
+        profile = cur.fetchone()
+        sleep_goal = profile['sleep_goal_minutes'] if profile and profile['sleep_goal_minutes'] else 450
+
+        # Calculate debt
+        cur.execute("""
+            SELECT
+                SUM(%s - duration_minutes) as debt_minutes,
+                COUNT(*) as nights_analyzed
+            FROM sleep_log
+            WHERE profile_id = %s
+              AND date >= CURRENT_DATE - INTERVAL '%s days'
+        """, (sleep_goal, pid, days))
+
+        result = cur.fetchone()
+
+    debt_min = int(result['debt_minutes']) if result['debt_minutes'] else 0
+    nights = result['nights_analyzed'] if result['nights_analyzed'] else 0
+
+    # Format debt
+    if debt_min == 0:
+        formatted = "0 – kein Defizit"
+    elif debt_min > 0:
+        formatted = f"+{format_duration(debt_min)}"
+    else:
+        formatted = f"−{format_duration(abs(debt_min))}"
+
+    return SleepDebtResponse(
+        sleep_debt_minutes=debt_min,
+        sleep_debt_formatted=formatted,
+        days_analyzed=nights,
+        sleep_goal_minutes=sleep_goal
+    )
+
+@router.get("/trend")
+def get_sleep_trend(
+    days: int = 30,
+    session: dict = Depends(require_auth)
+):
+    """Get sleep duration and quality trend over time."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute("""
+            SELECT
+                date,
+                duration_minutes,
+                quality
+            FROM sleep_log
+            WHERE profile_id = %s
+              AND date >= CURRENT_DATE - INTERVAL '%s days'
+            ORDER BY date ASC
+        """, (pid, days))
+        rows = cur.fetchall()
+
+    return [
+        {
+            "date": str(row['date']),
+            "duration_minutes": row['duration_minutes'],
+            "quality": row['quality']
+        }
+        for row in rows
+    ]
+
+@router.get("/phases")
+def get_sleep_phases(
+    days: int = 30,
+    session: dict = Depends(require_auth)
+):
+    """Get sleep phase distribution (deep, REM, light, awake) over time."""
+    pid = session['profile_id']
+
+    with get_db() as conn:
+        cur = get_cursor(conn)
+        cur.execute("""
+            SELECT
+                date,
+                deep_minutes,
+                rem_minutes,
+                light_minutes,
+                awake_minutes,
+                duration_minutes
+            FROM sleep_log
+            WHERE profile_id = %s
+              AND date >= CURRENT_DATE - INTERVAL '%s days'
+              AND (deep_minutes IS NOT NULL OR rem_minutes IS NOT NULL)
+            ORDER BY date ASC
+        """, (pid, days))
+        rows = cur.fetchall()
+
+    return [
+        {
+            "date": str(row['date']),
+            "deep_minutes": row['deep_minutes'],
+            "rem_minutes": row['rem_minutes'],
+            "light_minutes": row['light_minutes'],
+            "awake_minutes": row['awake_minutes'],
+            "deep_percent": calculate_phase_percent(row['deep_minutes'], row['duration_minutes']),
+            "rem_percent": calculate_phase_percent(row['rem_minutes'], row['duration_minutes'])
+        }
+        for row in rows
+    ]

frontend/src/App.jsx

@@ -1,6 +1,6 @@
 import { useEffect } from 'react'
 import { BrowserRouter, Routes, Route, NavLink, useNavigate } from 'react-router-dom'
-import { LayoutDashboard, PlusSquare, TrendingUp, BarChart2, Settings, LogOut } from 'lucide-react'
+import { LayoutDashboard, PlusSquare, TrendingUp, BarChart2, Settings, LogOut, Moon } from 'lucide-react'
 import { ProfileProvider, useProfile } from './context/ProfileContext'
 import { AuthProvider, useAuth }       from './context/AuthContext'
 import { setProfileId }                from './utils/api'
@@ -30,6 +30,7 @@ import AdminUserRestrictionsPage from './pages/AdminUserRestrictionsPage'
 import AdminTrainingTypesPage from './pages/AdminTrainingTypesPage'
 import AdminActivityMappingsPage from './pages/AdminActivityMappingsPage'
 import SubscriptionPage from './pages/SubscriptionPage'
+import SleepPage from './pages/SleepPage'
 import './app.css'
 
 function Nav() {
@@ -37,6 +38,7 @@ function Nav() {
     { to:'/',         icon:<LayoutDashboard size={20}/>, label:'Übersicht' },
     { to:'/capture',  icon:<PlusSquare size={20}/>,      label:'Erfassen'  },
     { to:'/history',  icon:<TrendingUp size={20}/>,      label:'Verlauf'   },
+    { to:'/sleep',    icon:<Moon size={20}/>,            label:'Schlaf'    },
     { to:'/analysis', icon:<BarChart2 size={20}/>,       label:'Analyse'   },
     { to:'/settings', icon:<Settings size={20}/>,        label:'Einst.'    },
   ]
@@ -164,6 +166,7 @@ function AppShell() {
           <Route path="/circum"    element={<CircumScreen/>}/>
           <Route path="/caliper"   element={<CaliperScreen/>}/>
           <Route path="/history"   element={<History/>}/>
+          <Route path="/sleep"     element={<SleepPage/>}/>
           <Route path="/nutrition" element={<NutritionPage/>}/>
           <Route path="/activity"  element={<ActivityPage/>}/>
           <Route path="/analysis"  element={<Analysis/>}/>

frontend/src/components/SleepWidget.jsx

@@ -0,0 +1,111 @@
+import { useState, useEffect } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { Moon, Plus } from 'lucide-react'
+import { api } from '../utils/api'
+
+/**
+ * SleepWidget - Dashboard widget for sleep tracking (v9d Phase 2b)
+ *
+ * Shows:
+ * - Last night's sleep (if exists)
+ * - 7-day average
+ * - Quick action button to add entry or view details
+ */
+export default function SleepWidget() {
+  const nav = useNavigate()
+  const [loading, setLoading] = useState(true)
+  const [lastNight, setLastNight] = useState(null)
+  const [stats, setStats] = useState(null)
+
+  useEffect(() => {
+    load()
+  }, [])
+
+  const load = () => {
+    Promise.all([
+      api.listSleep(1),  // Get last entry
+      api.getSleepStats(7)
+    ]).then(([sleepData, statsData]) => {
+      setLastNight(sleepData[0] || null)
+      setStats(statsData)
+      setLoading(false)
+    }).catch(err => {
+      console.error('Failed to load sleep widget:', err)
+      setLoading(false)
+    })
+  }
+
+  const formatDuration = (minutes) => {
+    const h = Math.floor(minutes / 60)
+    const m = minutes % 60
+    return `${h}h ${m}min`
+  }
+
+  const renderStars = (quality) => {
+    if (!quality) return '—'
+    return '★'.repeat(quality) + '☆'.repeat(5 - quality)
+  }
+
+  if (loading) {
+    return (
+      <div className="card" style={{ padding: 16 }}>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginBottom: 12 }}>
+          <Moon size={16} color="var(--accent)" />
+          <div style={{ fontWeight: 600, fontSize: 14 }}>Schlaf</div>
+        </div>
+        <div style={{ textAlign: 'center', padding: 20 }}>
+          <div className="spinner" style={{ width: 20, height: 20, margin: '0 auto' }} />
+        </div>
+      </div>
+    )
+  }
+
+  return (
+    <div className="card" style={{ padding: 16 }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginBottom: 12 }}>
+        <Moon size={16} color="var(--accent)" />
+        <div style={{ fontWeight: 600, fontSize: 14 }}>Schlaf</div>
+      </div>
+
+      {lastNight ? (
+        <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
+          <div style={{ fontSize: 12, color: 'var(--text3)' }}>Letzte Nacht:</div>
+          <div style={{ fontSize: 16, fontWeight: 700 }}>
+            {lastNight.duration_formatted} {lastNight.quality && `· ${renderStars(lastNight.quality)}`}
+          </div>
+          <div style={{ fontSize: 11, color: 'var(--text3)' }}>
+            {new Date(lastNight.date).toLocaleDateString('de-DE', { weekday: 'short', day: '2-digit', month: '2-digit' })}
+          </div>
+
+          {stats && stats.total_nights > 0 && (
+            <div style={{ marginTop: 8, paddingTop: 8, borderTop: '1px solid var(--border)' }}>
+              <div style={{ fontSize: 11, color: 'var(--text3)' }}>Ø 7 Tage:</div>
+              <div style={{ fontSize: 13, fontWeight: 600 }}>
+                {formatDuration(Math.round(stats.avg_duration_minutes))}
+                {stats.avg_quality && ` · ${stats.avg_quality.toFixed(1)}/5`}
+              </div>
+            </div>
+          )}
+        </div>
+      ) : (
+        <div style={{ textAlign: 'center', padding: '12px 0', color: 'var(--text3)' }}>
+          <div style={{ fontSize: 12, marginBottom: 12 }}>Noch keine Einträge erfasst</div>
+        </div>
+      )}
+
+      <button
+        onClick={() => nav('/sleep')}
+        className="btn btn-secondary btn-full"
+        style={{ marginTop: 12, fontSize: 12 }}
+      >
+        {lastNight ? (
+          <>Zur Übersicht</>
+        ) : (
+          <>
+            <Plus size={14} /> Schlaf erfassen
+          </>
+        )}
+      </button>
+    </div>
+  )
+}

frontend/src/pages/Dashboard.jsx

@@ -11,6 +11,7 @@ import { getBfCategory } from '../utils/calc'
 import TrialBanner from '../components/TrialBanner'
 import EmailVerificationBanner from '../components/EmailVerificationBanner'
 import TrainingTypeDistribution from '../components/TrainingTypeDistribution'
+import SleepWidget from '../components/SleepWidget'
 import { getInterpretation, getStatusColor, getStatusBg } from '../utils/interpret'
 import Markdown from '../utils/Markdown'
 import dayjs from 'dayjs'
@@ -471,6 +472,11 @@ export default function Dashboard() {
           )}
         </div>
 
+        {/* Sleep Widget */}
+        <div style={{marginBottom:16}}>
+          <SleepWidget/>
+        </div>
+
         {/* Training Type Distribution */}
         {activities.length > 0 && (
           <div className="card section-gap" style={{marginBottom:16}}>

frontend/src/pages/SleepPage.jsx

@@ -0,0 +1,466 @@
+import { useState, useEffect } from 'react'
+import { Moon, Plus, Edit2, Trash2, X, Save, TrendingUp } from 'lucide-react'
+import { api } from '../utils/api'
+
+/**
+ * SleepPage - Sleep tracking with quick/detail entry (v9d Phase 2b)
+ *
+ * Features:
+ * - Quick entry: date, duration, quality
+ * - Detail entry: bedtime, wake time, phases, wake count
+ * - 7-day stats overview
+ * - Sleep duration trend chart
+ * - List with inline edit/delete
+ */
+export default function SleepPage() {
+  const [sleep, setSleep] = useState([])
+  const [stats, setStats] = useState(null)
+  const [showForm, setShowForm] = useState(false)
+  const [showDetail, setShowDetail] = useState(false)
+  const [editingId, setEditingId] = useState(null)
+  const [loading, setLoading] = useState(true)
+  const [saving, setSaving] = useState(false)
+
+  // Form state
+  const [formData, setFormData] = useState({
+    date: new Date().toISOString().split('T')[0],
+    duration_minutes: 450, // 7h 30min default
+    quality: 3,
+    bedtime: '',
+    wake_time: '',
+    wake_count: 0,
+    deep_minutes: null,
+    rem_minutes: null,
+    light_minutes: null,
+    awake_minutes: null,
+    note: ''
+  })
+
+  useEffect(() => {
+    load()
+  }, [])
+
+  const load = () => {
+    setLoading(true)
+    Promise.all([
+      api.listSleep(30),
+      api.getSleepStats(7)
+    ]).then(([sleepData, statsData]) => {
+      setSleep(sleepData)
+      setStats(statsData)
+      setLoading(false)
+    }).catch(err => {
+      console.error('Failed to load sleep data:', err)
+      setLoading(false)
+    })
+  }
+
+  const startCreate = () => {
+    setFormData({
+      date: new Date().toISOString().split('T')[0],
+      duration_minutes: 450,
+      quality: 3,
+      bedtime: '',
+      wake_time: '',
+      wake_count: 0,
+      deep_minutes: null,
+      rem_minutes: null,
+      light_minutes: null,
+      awake_minutes: null,
+      note: ''
+    })
+    setShowForm(true)
+    setShowDetail(false)
+    setEditingId(null)
+  }
+
+  const startEdit = (entry) => {
+    setFormData({
+      date: entry.date,
+      duration_minutes: entry.duration_minutes,
+      quality: entry.quality,
+      bedtime: entry.bedtime || '',
+      wake_time: entry.wake_time || '',
+      wake_count: entry.wake_count || 0,
+      deep_minutes: entry.deep_minutes,
+      rem_minutes: entry.rem_minutes,
+      light_minutes: entry.light_minutes,
+      awake_minutes: entry.awake_minutes,
+      note: entry.note || ''
+    })
+    setEditingId(entry.id)
+    setShowForm(true)
+    setShowDetail(true) // Show detail if phases exist
+  }
+
+  const cancelEdit = () => {
+    setShowForm(false)
+    setEditingId(null)
+    setShowDetail(false)
+  }
+
+  const handleSave = async () => {
+    if (!formData.date || formData.duration_minutes <= 0) {
+      alert('Datum und Schlafdauer sind Pflichtfelder')
+      return
+    }
+
+    setSaving(true)
+
+    try {
+      if (editingId) {
+        await api.updateSleep(editingId, formData)
+      } else {
+        await api.createSleep(formData)
+      }
+      await load()
+      cancelEdit()
+    } catch (err) {
+      alert('Speichern fehlgeschlagen: ' + err.message)
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  const handleDelete = async (id, date) => {
+    if (!confirm(`Schlaf-Eintrag vom ${date} wirklich löschen?`)) return
+
+    try {
+      await api.deleteSleep(id)
+      await load()
+    } catch (err) {
+      alert('Löschen fehlgeschlagen: ' + err.message)
+    }
+  }
+
+  const formatDuration = (minutes) => {
+    const h = Math.floor(minutes / 60)
+    const m = minutes % 60
+    return `${h}h ${m}min`
+  }
+
+  if (loading) {
+    return (
+      <div style={{ padding: 20, textAlign: 'center' }}>
+        <div className="spinner" style={{ width: 32, height: 32, margin: '0 auto' }} />
+      </div>
+    )
+  }
+
+  return (
+    <div style={{ padding: '16px 16px 80px' }}>
+      {/* Header */}
+      <div style={{ marginBottom: 20, display: 'flex', alignItems: 'center', gap: 12 }}>
+        <Moon size={24} color="var(--accent)" />
+        <h1 style={{ margin: 0, fontSize: 20, fontWeight: 700 }}>Schlaf</h1>
+      </div>
+
+      {/* Stats Card */}
+      {stats && (
+        <div className="card" style={{ padding: 16, marginBottom: 16 }}>
+          <div style={{ fontWeight: 600, fontSize: 14, marginBottom: 12, display: 'flex', alignItems: 'center', gap: 6 }}>
+            <TrendingUp size={16} color="var(--accent)" />
+            <span>Übersicht (letzte 7 Tage)</span>
+          </div>
+          <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
+            <div style={{ textAlign: 'center', padding: 12, background: 'var(--surface)', borderRadius: 8 }}>
+              <div style={{ fontSize: 18, fontWeight: 700, color: 'var(--accent)' }}>
+                {formatDuration(Math.round(stats.avg_duration_minutes))}
+              </div>
+              <div style={{ fontSize: 11, color: 'var(--text3)' }}>Ø Schlafdauer</div>
+            </div>
+            <div style={{ textAlign: 'center', padding: 12, background: 'var(--surface)', borderRadius: 8 }}>
+              <div style={{ fontSize: 18, fontWeight: 700 }}>
+                {stats.avg_quality ? stats.avg_quality.toFixed(1) : '—'}/5
+              </div>
+              <div style={{ fontSize: 11, color: 'var(--text3)' }}>Ø Qualität</div>
+            </div>
+          </div>
+          {stats.nights_below_goal > 0 && (
+            <div style={{ marginTop: 12, fontSize: 12, color: '#D85A30', textAlign: 'center' }}>
+              ⚠️ {stats.nights_below_goal} Nächte unter Ziel ({formatDuration(stats.sleep_goal_minutes)})
+            </div>
+          )}
+        </div>
+      )}
+
+      {/* Add Button */}
+      {!showForm && (
+        <button
+          onClick={startCreate}
+          className="btn btn-primary btn-full"
+          style={{ marginBottom: 16 }}
+        >
+          <Plus size={16} /> Schlaf erfassen
+        </button>
+      )}
+
+      {/* Entry Form */}
+      {showForm && (
+        <div className="card" style={{ padding: 16, marginBottom: 16, border: '2px solid var(--accent)' }}>
+          <div style={{ fontWeight: 600, marginBottom: 12 }}>
+            {editingId ? '✏️ Eintrag bearbeiten' : '➕ Neuer Eintrag'}
+          </div>
+
+          {/* Quick Entry Fields */}
+          <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
+            <div>
+              <div className="form-label">Datum</div>
+              <input
+                type="date"
+                className="form-input"
+                value={formData.date}
+                onChange={e => setFormData({ ...formData, date: e.target.value })}
+                style={{ width: '100%' }}
+              />
+            </div>
+
+            <div style={{ display: 'grid', gridTemplateColumns: '2fr 1fr', gap: 12 }}>
+              <div>
+                <div className="form-label">Schlafdauer (Minuten)</div>
+                <input
+                  type="number"
+                  className="form-input"
+                  value={formData.duration_minutes}
+                  onChange={e => setFormData({ ...formData, duration_minutes: parseInt(e.target.value) || 0 })}
+                  style={{ width: '100%' }}
+                  min="1"
+                />
+                <div style={{ fontSize: 11, color: 'var(--text3)', marginTop: 4 }}>
+                  = {formatDuration(formData.duration_minutes)}
+                </div>
+              </div>
+
+              <div>
+                <div className="form-label">Qualität</div>
+                <select
+                  className="form-input"
+                  value={formData.quality || ''}
+                  onChange={e => setFormData({ ...formData, quality: parseInt(e.target.value) || null })}
+                  style={{ width: '100%' }}
+                >
+                  <option value="">—</option>
+                  <option value="1">★☆☆☆☆ 1</option>
+                  <option value="2">★★☆☆☆ 2</option>
+                  <option value="3">★★★☆☆ 3</option>
+                  <option value="4">★★★★☆ 4</option>
+                  <option value="5">★★★★★ 5</option>
+                </select>
+              </div>
+            </div>
+
+            <div>
+              <div className="form-label">Notiz (optional)</div>
+              <textarea
+                className="form-input"
+                value={formData.note}
+                onChange={e => setFormData({ ...formData, note: e.target.value })}
+                placeholder="z.B. 'Gut durchgeschlafen', 'Stress', ..."
+                rows={2}
+                style={{ width: '100%', resize: 'vertical' }}
+              />
+            </div>
+
+            {/* Toggle Detail View */}
+            <button
+              onClick={() => setShowDetail(!showDetail)}
+              className="btn btn-secondary"
+              style={{ fontSize: 12 }}
+            >
+              {showDetail ? '− Detailansicht ausblenden' : '+ Detailansicht anzeigen'}
+            </button>
+
+            {/* Detail Fields */}
+            {showDetail && (
+              <div style={{ display: 'flex', flexDirection: 'column', gap: 12, paddingTop: 12, borderTop: '1px solid var(--border)' }}>
+                <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
+                  <div>
+                    <div className="form-label">Eingeschlafen (HH:MM)</div>
+                    <input
+                      type="time"
+                      className="form-input"
+                      value={formData.bedtime}
+                      onChange={e => setFormData({ ...formData, bedtime: e.target.value })}
+                      style={{ width: '100%' }}
+                    />
+                  </div>
+                  <div>
+                    <div className="form-label">Aufgewacht (HH:MM)</div>
+                    <input
+                      type="time"
+                      className="form-input"
+                      value={formData.wake_time}
+                      onChange={e => setFormData({ ...formData, wake_time: e.target.value })}
+                      style={{ width: '100%' }}
+                    />
+                  </div>
+                </div>
+
+                <div>
+                  <div className="form-label">Aufwachungen</div>
+                  <input
+                    type="number"
+                    className="form-input"
+                    value={formData.wake_count || 0}
+                    onChange={e => setFormData({ ...formData, wake_count: parseInt(e.target.value) || 0 })}
+                    style={{ width: '100%' }}
+                    min="0"
+                  />
+                </div>
+
+                <div style={{ fontWeight: 600, fontSize: 13, marginTop: 8 }}>Schlafphasen (Minuten)</div>
+
+                <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
+                  <div>
+                    <div className="form-label">Tiefschlaf</div>
+                    <input
+                      type="number"
+                      className="form-input"
+                      value={formData.deep_minutes || ''}
+                      onChange={e => setFormData({ ...formData, deep_minutes: parseInt(e.target.value) || null })}
+                      placeholder="—"
+                      style={{ width: '100%' }}
+                      min="0"
+                    />
+                  </div>
+                  <div>
+                    <div className="form-label">REM-Schlaf</div>
+                    <input
+                      type="number"
+                      className="form-input"
+                      value={formData.rem_minutes || ''}
+                      onChange={e => setFormData({ ...formData, rem_minutes: parseInt(e.target.value) || null })}
+                      placeholder="—"
+                      style={{ width: '100%' }}
+                      min="0"
+                    />
+                  </div>
+                  <div>
+                    <div className="form-label">Leichtschlaf</div>
+                    <input
+                      type="number"
+                      className="form-input"
+                      value={formData.light_minutes || ''}
+                      onChange={e => setFormData({ ...formData, light_minutes: parseInt(e.target.value) || null })}
+                      placeholder="—"
+                      style={{ width: '100%' }}
+                      min="0"
+                    />
+                  </div>
+                  <div>
+                    <div className="form-label">Wach im Bett</div>
+                    <input
+                      type="number"
+                      className="form-input"
+                      value={formData.awake_minutes || ''}
+                      onChange={e => setFormData({ ...formData, awake_minutes: parseInt(e.target.value) || null })}
+                      placeholder="—"
+                      style={{ width: '100%' }}
+                      min="0"
+                    />
+                  </div>
+                </div>
+              </div>
+            )}
+
+            {/* Action Buttons */}
+            <div style={{ display: 'flex', gap: 8, marginTop: 12 }}>
+              <button
+                onClick={handleSave}
+                disabled={saving}
+                className="btn btn-primary"
+                style={{ flex: 1 }}
+              >
+                {saving ? (
+                  <div style={{ display: 'flex', alignItems: 'center', gap: 6, justifyContent: 'center' }}>
+                    <div className="spinner" style={{ width: 14, height: 14 }} />
+                    Speichere...
+                  </div>
+                ) : (
+                  <>
+                    <Save size={16} /> Speichern
+                  </>
+                )}
+              </button>
+              <button
+                onClick={cancelEdit}
+                disabled={saving}
+                className="btn btn-secondary"
+                style={{ flex: 1 }}
+              >
+                <X size={16} /> Abbrechen
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Sleep List */}
+      <div style={{ fontWeight: 600, fontSize: 14, marginBottom: 12 }}>
+        Letzte 30 Nächte ({sleep.length})
+      </div>
+
+      {sleep.length === 0 ? (
+        <div className="card" style={{ padding: 40, textAlign: 'center', color: 'var(--text3)' }}>
+          Noch keine Einträge erfasst
+        </div>
+      ) : (
+        <div style={{ display: 'flex', flexDirection: 'column', gap: 8 }}>
+          {sleep.map(entry => (
+            <div key={entry.id} className="card" style={{ padding: 12 }}>
+              <div style={{ display: 'flex', alignItems: 'flex-start', gap: 12 }}>
+                <div style={{ flex: 1 }}>
+                  <div style={{ fontSize: 13, fontWeight: 600, marginBottom: 4 }}>
+                    {new Date(entry.date).toLocaleDateString('de-DE', { weekday: 'short', day: '2-digit', month: '2-digit' })}
+                  </div>
+                  <div style={{ fontSize: 12, color: 'var(--text2)' }}>
+                    {entry.duration_formatted}
+                    {entry.quality && ` · ${'★'.repeat(entry.quality)}${'☆'.repeat(5 - entry.quality)}`}
+                  </div>
+                  {entry.bedtime && entry.wake_time && (
+                    <div style={{ fontSize: 11, color: 'var(--text3)', marginTop: 2 }}>
+                      {entry.bedtime} – {entry.wake_time}
+                    </div>
+                  )}
+                  {entry.note && (
+                    <div style={{ fontSize: 11, color: 'var(--text3)', marginTop: 4, fontStyle: 'italic' }}>
+                      "{entry.note}"
+                    </div>
+                  )}
+                </div>
+                <div style={{ display: 'flex', gap: 8 }}>
+                  <button
+                    onClick={() => startEdit(entry)}
+                    style={{
+                      background: 'none',
+                      border: 'none',
+                      cursor: 'pointer',
+                      padding: 6,
+                      color: 'var(--accent)'
+                    }}
+                    title="Bearbeiten"
+                  >
+                    <Edit2 size={16} />
+                  </button>
+                  <button
+                    onClick={() => handleDelete(entry.id, entry.date)}
+                    style={{
+                      background: 'none',
+                      border: 'none',
+                      cursor: 'pointer',
+                      padding: 6,
+                      color: '#D85A30'
+                    }}
+                    title="Löschen"
+                  >
+                    <Trash2 size={16} />
+                  </button>
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}

frontend/src/utils/api.js

@@ -212,4 +212,15 @@ export const api = {
   adminUpdateActivityMapping: (id,d) => req(`/admin/activity-mappings/${id}`, jput(d)),
   adminDeleteActivityMapping: (id)   => req(`/admin/activity-mappings/${id}`, {method:'DELETE'}),
   adminGetMappingCoverage:    ()     => req('/admin/activity-mappings/stats/coverage'),
+
+  // Sleep Module (v9d Phase 2b)
+  listSleep:       (l=90)  => req(`/sleep?limit=${l}`),
+  getSleepByDate:  (date)  => req(`/sleep/by-date/${date}`),
+  createSleep:     (d)     => req('/sleep', json(d)),
+  updateSleep:     (id,d)  => req(`/sleep/${id}`, jput(d)),
+  deleteSleep:     (id)    => req(`/sleep/${id}`, {method:'DELETE'}),
+  getSleepStats:   (days=7) => req(`/sleep/stats?days=${days}`),
+  getSleepDebt:    (days=14) => req(`/sleep/debt?days=${days}`),
+  getSleepTrend:   (days=30) => req(`/sleep/trend?days=${days}`),
+  getSleepPhases:  (days=30) => req(`/sleep/phases?days=${days}`),
 }