feat: persist Wochenübersicht exports, DAK-Mitarbeiter access + ICD upload

- Wochenübersicht exports now persisted in DB (WeeklyReport) + disk
- POST /reports/wochenuebersicht/generate replaces GET (admin-only)
- POST /reports/wochenuebersicht/upload-icd for ICD upload (all roles)
- GET /reports/list supports report_type_prefix filter
- WochenuebersichtPage: report table + ICD drag-drop upload for all roles
- Route + sidebar open to all authenticated users
- ReportsPage filters out wochenuebersicht report types

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

backend/app/api/reports.py

@@ -6,7 +6,7 @@ from collections import defaultdict
 from datetime import date
 from io import BytesIO
 
-from fastapi import APIRouter, Depends, HTTPException, Query, Request, status
+from fastapi import APIRouter, Depends, File, HTTPException, Query, Request, UploadFile, status
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
 
@@ -284,8 +284,8 @@ def delete_reports(
     return {"deleted": deleted}
 
 
-@router.get("/wochenuebersicht")
-def download_wochenuebersicht(
+@router.post("/wochenuebersicht/generate", response_model=ReportMeta)
+def generate_wochenuebersicht(
     export_type: str = Query(...),
     jahr: int = Query(...),
     kw_von: int = Query(...),
@@ -293,9 +293,9 @@ def download_wochenuebersicht(
     db: Session = Depends(get_db),
     user: User = Depends(require_admin),
 ):
-    """Generate and download a Wochenübersicht Excel file for DAK.
+    """Generate a Wochenübersicht Excel file and persist it to disk + DB.
 
-    Admin only. Returns an .xlsx file with weekly case summaries grouped by KW.
+    Admin only. Creates a WeeklyReport entry so DAK-Mitarbeiter can download it later.
     """
     from app.config import get_settings
     from app.models.case import Case
@@ -335,42 +335,145 @@ def download_wochenuebersicht(
 
     xlsx_bytes = generate_wochenuebersicht_xlsx(cases_by_kw, export_type, jahr)
 
+    # Persist Excel file to disk
+    reports_dir = os.path.join(
+        os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
+        "reports",
+    )
+    os.makedirs(reports_dir, exist_ok=True)
     infix = type_cfg["filename_infix"]
-    filename = f"Wochenübersicht {infix} KW{kw_bis:02d}{jahr % 100:02d}.xlsx"
+    filename = f"Wochenübersicht {infix} KW{kw_von:02d}-{kw_bis:02d}_{jahr}.xlsx"
+    filepath = os.path.join(reports_dir, filename)
+    with open(filepath, "wb") as f:
+        f.write(xlsx_bytes)
+
+    # report_type encodes both the wochenuebersicht prefix and the export variant
+    report_type = f"wochenuebersicht_{export_type}"
+
+    # Upsert: replace if same jahr/kw_bis/report_type exists
+    report = (
+        db.query(WeeklyReport)
+        .filter(
+            WeeklyReport.jahr == jahr,
+            WeeklyReport.kw == kw_bis,
+            WeeklyReport.report_type == report_type,
+        )
+        .first()
+    )
+    report_data = {
+        "export_type": export_type,
+        "kw_von": kw_von,
+        "kw_bis": kw_bis,
+        "case_count": len(cases),
+    }
+    if report:
+        report.report_date = date.today()
+        report.report_data = report_data
+        report.report_file_path = filepath
+        report.generated_by = user.id
+    else:
+        report = WeeklyReport(
+            jahr=jahr,
+            kw=kw_bis,
+            report_type=report_type,
+            report_date=date.today(),
+            report_data=report_data,
+            generated_by=user.id,
+        )
+        report.report_file_path = filepath
+        db.add(report)
+
+    db.commit()
+    db.refresh(report)
 
     log_action(
         db,
         user_id=user.id,
-        action="wochenuebersicht_downloaded",
+        action="wochenuebersicht_generated",
         entity_type="report",
+        entity_id=report.id,
         new_values={
             "export_type": export_type,
             "jahr": jahr,
             "kw_von": kw_von,
             "kw_bis": kw_bis,
             "case_count": len(cases),
+            "filename": filename,
         },
     )
 
-    return StreamingResponse(
-        BytesIO(xlsx_bytes),
-        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
-        headers={"Content-Disposition": f'attachment; filename="{filename}"'},
+    return ReportMeta.model_validate(report)
+
+
+@router.post("/wochenuebersicht/upload-icd")
+async def upload_wochenuebersicht_icd(
+    file: UploadFile = File(...),
+    db: Session = Depends(get_db),
+    user: User = Depends(get_current_user),
+):
+    """Upload a filled-in Wochenübersicht Excel with ICD codes.
+
+    Accessible to both admin and dak_mitarbeiter users.
+    Auto-detects the format and imports ICD codes by KVNR matching.
+    """
+    from app.config import get_settings
+    from app.services.icd_service import import_icd_from_xlsx
+
+    settings = get_settings()
+
+    if not file.filename or not file.filename.lower().endswith((".xlsx", ".xls")):
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Datei muss eine Excel-Datei (.xlsx) sein",
+        )
+
+    content = await file.read()
+    if len(content) > settings.MAX_UPLOAD_SIZE:
+        raise HTTPException(
+            status_code=status.HTTP_413_REQUEST_ENTITY_TOO_LARGE,
+            detail=f"Datei überschreitet die maximale Größe von {settings.MAX_UPLOAD_SIZE // (1024 * 1024)}MB",
+        )
+
+    try:
+        result = import_icd_from_xlsx(db, content, user.id)
+    except Exception as exc:
+        logger.exception("Wochenübersicht ICD import failed for %s", file.filename)
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"ICD-Import fehlgeschlagen: {exc}",
+        )
+
+    log_action(
+        db,
+        user_id=user.id,
+        action="wochenuebersicht_icd_uploaded",
+        entity_type="import",
+        new_values={
+            "filename": file.filename,
+            "updated": result["updated"],
+            "errors": len(result["errors"]),
+        },
     )
 
+    return result
+
 
 @router.get("/list", response_model=ReportListResponse)
 def list_reports(
+    report_type_prefix: str | None = Query(None),
     db: Session = Depends(get_db),
     user: User = Depends(get_current_user),
 ):
-    """List all generated reports, newest first.
+    """List generated reports, newest first.
 
     Accessible to both admin and dak_mitarbeiter users.
+    Optional *report_type_prefix* filter (e.g. ``wochenuebersicht`` to show
+    only Wochenübersicht exports, or omit to show all).
     """
-    reports = (
-        db.query(WeeklyReport).order_by(WeeklyReport.generated_at.desc()).all()
-    )
+    query = db.query(WeeklyReport)
+    if report_type_prefix:
+        query = query.filter(WeeklyReport.report_type.startswith(report_type_prefix))
+    reports = query.order_by(WeeklyReport.generated_at.desc()).all()
     return ReportListResponse(
         items=[ReportMeta.model_validate(r) for r in reports],
         total=len(reports),

docs/plans/2026-02-27-wochenuebersicht-persist-upload-design.md

@@ -0,0 +1,49 @@
+# Wochenübersicht: Persistierung + DAK-Mitarbeiter-Zugang + ICD-Upload
+
+**Datum:** 2026-02-27
+**Status:** Genehmigt
+
+## Ziel
+
+1. Wochenübersicht-Exporte in DB persistieren (wie Berichtswesen-Reports)
+2. DAK-Mitarbeiter können generierte Exports herunterladen
+3. DAK-Mitarbeiter können ausgefüllte ICD-Excel-Dateien hochladen
+
+## Backend-Änderungen
+
+### 1. Wochenübersicht generieren + persistieren
+
+- `GET /reports/wochenuebersicht` → `POST /reports/wochenuebersicht/generate` (admin-only)
+- Speichert Excel auf Disk + `WeeklyReport`-Eintrag in DB
+- `report_type`: `"wochenuebersicht_c2s"` oder `"wochenuebersicht_c2s_g_s"`
+- Upsert-Verhalten wie bei Berichtswesen
+
+### 2. Neuer ICD-Upload Endpoint
+
+- `POST /reports/wochenuebersicht/upload-icd` (alle authentifizierten User)
+- Nimmt Excel-Datei entgegen, nutzt `import_icd_from_xlsx()` mit Auto-Detect
+- Separater Endpoint vom admin-only `/import/icd-xlsx`
+
+### 3. Report-Liste filtern
+
+- `GET /reports/list` bekommt optionalen Query-Param `report_type_prefix`
+- Frontend kann nach `wochenuebersicht` filtern
+
+## Frontend-Änderungen
+
+### WochenuebersichtPage
+
+- **Admin:** Generierungsformular (persistiert jetzt)
+- **Alle:** Tabelle "Bisherige Wochenübersichten" mit Download
+- **Alle:** Upload-Box für ICD-Excel
+
+### Route + Sidebar
+
+- `/wochenuebersicht`: nicht mehr admin-only
+- Sidebar: `adminOnly` entfernen
+
+## Wiederverwendung
+
+- WeeklyReport-Model unverändert
+- Download über bestehenden `/reports/download/{report_id}`
+- ICD-Import-Logik über bestehende `import_icd_from_xlsx()`

frontend/src/App.tsx

@@ -46,7 +46,7 @@ function App() {
               <Route path="icd" element={<IcdPage />} />
               <Route path="coding" element={<ProtectedRoute requireAdmin><CodingPage /></ProtectedRoute>} />
               <Route path="reports" element={<ReportsPage />} />
-              <Route path="wochenuebersicht" element={<ProtectedRoute requireAdmin><WochenuebersichtPage /></ProtectedRoute>} />
+              <Route path="wochenuebersicht" element={<WochenuebersichtPage />} />
               <Route path="gutachten-statistik" element={<GutachtenStatistikPage />} />
               <Route path="account" element={<AccountPage />} />
               <Route path="disclosures" element={<MyDisclosuresPage />} />

frontend/src/components/layout/Sidebar.tsx

@@ -33,7 +33,7 @@ const mainNavItems: NavItem[] = [
   { label: 'ICD-Eingabe', to: '/icd', icon: FileEdit, mitarbeiterOnly: true },
   { label: 'Coding', to: '/coding', icon: ClipboardCheck, adminOnly: true },
   { label: 'Berichte', to: '/reports', icon: FileBarChart },
-  { label: 'Wochenübersicht', to: '/wochenuebersicht', icon: FileOutput, adminOnly: true },
+  { label: 'Wochenübersicht', to: '/wochenuebersicht', icon: FileOutput },
 ]
 
 const accountNavItems: NavItem[] = [

frontend/src/hooks/useReports.ts

@@ -1,17 +1,19 @@
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import api from '@/services/api'
-import type { ReportMeta } from '@/types'
+import type { ReportMeta, ICDImportResponse } from '@/types'
 
 interface ReportsListResponse {
   items: ReportMeta[]
   total: number
 }
 
-export function useReports() {
+export function useReports(reportTypePrefix?: string) {
   return useQuery({
-    queryKey: ['reports'],
+    queryKey: ['reports', reportTypePrefix ?? 'all'],
     queryFn: () =>
-      api.get<ReportsListResponse>('/reports/list').then(r => r.data),
+      api.get<ReportsListResponse>('/reports/list', {
+        params: reportTypePrefix ? { report_type_prefix: reportTypePrefix } : undefined,
+      }).then(r => r.data),
   })
 }
 
@@ -26,6 +28,33 @@ export function useGenerateReport() {
   })
 }
 
+export function useGenerateWochenuebersicht() {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (params: { export_type: string; jahr: number; kw_von: number; kw_bis: number }) =>
+      api.post<ReportMeta>('/reports/wochenuebersicht/generate', null, { params }).then(r => r.data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['reports'] })
+    },
+  })
+}
+
+export function useUploadWochenuebersichtIcd() {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (file: File) => {
+      const formData = new FormData()
+      formData.append('file', file)
+      return api.post<ICDImportResponse>('/reports/wochenuebersicht/upload-icd', formData, {
+        headers: { 'Content-Type': 'multipart/form-data' },
+      }).then(r => r.data)
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['cases'] })
+    },
+  })
+}
+
 export function useDeleteReports() {
   const queryClient = useQueryClient()
   return useMutation({

frontend/src/pages/ReportsPage.tsx

@@ -35,10 +35,10 @@ export function ReportsPage() {
   const currentYear = new Date().getFullYear()
   const currentKw = getISOWeek(new Date())
 
-  // TanStack Query hooks
+  // TanStack Query hooks — exclude Wochenübersicht reports (shown on separate page)
   const { data, isLoading: loading } = useReports()
-  const reports = data?.items ?? []
-  const totalReports = data?.total ?? 0
+  const reports = (data?.items ?? []).filter(r => !r.report_type.startsWith('wochenuebersicht'))
+  const totalReports = reports.length
 
   const generateMutation = useGenerateReport()
   const deleteMutation = useDeleteReports()

frontend/src/pages/WochenuebersichtPage.tsx

@@ -1,6 +1,13 @@
-import { useState } from 'react'
-import { Download, FileSpreadsheet, Loader2 } from 'lucide-react'
+import { useCallback, useState } from 'react'
+import { Download, FileSpreadsheet, Loader2, Plus, Upload } from 'lucide-react'
 import api from '@/services/api'
+import { useAuth } from '@/context/AuthContext'
+import {
+  useReports,
+  useGenerateWochenuebersicht,
+  useDeleteReports,
+  useUploadWochenuebersichtIcd,
+} from '@/hooks/useReports'
 import { Button } from '@/components/ui/button'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Input } from '@/components/ui/input'
@@ -8,6 +15,10 @@ import { Label } from '@/components/ui/label'
 import {
   Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
 } from '@/components/ui/select'
+import {
+  Table, TableBody, TableCell, TableHead, TableHeader, TableRow,
+} from '@/components/ui/table'
+import { Skeleton } from '@/components/ui/skeleton'
 import { Alert, AlertDescription } from '@/components/ui/alert'
 
 const EXPORT_TYPES = [
@@ -15,6 +26,11 @@ const EXPORT_TYPES = [
   { value: 'c2s_g_s', label: 'Galle-Schild (c2s_g_s)' },
 ] as const
 
+const REPORT_TYPE_LABELS: Record<string, string> = {
+  wochenuebersicht_c2s: 'Onko-Intensiv',
+  'wochenuebersicht_c2s_g_s': 'Galle-Schild',
+}
+
 function getISOWeek(d: Date): number {
   const date = new Date(Date.UTC(d.getFullYear(), d.getMonth(), d.getDate()))
   const dayNum = date.getUTCDay() || 7
@@ -23,151 +39,405 @@ function getISOWeek(d: Date): number {
   return Math.ceil(((date.getTime() - yearStart.getTime()) / 86_400_000 + 1) / 7)
 }
 
+function formatDate(dateStr: string): string {
+  try {
+    return new Date(dateStr).toLocaleDateString('de-DE', {
+      day: '2-digit', month: '2-digit', year: 'numeric',
+    })
+  } catch {
+    return dateStr
+  }
+}
+
+function formatDateTime(dateStr: string): string {
+  try {
+    return new Date(dateStr).toLocaleString('de-DE', {
+      day: '2-digit', month: '2-digit', year: 'numeric',
+      hour: '2-digit', minute: '2-digit',
+    })
+  } catch {
+    return dateStr
+  }
+}
+
 export function WochenuebersichtPage() {
+  const { isAdmin } = useAuth()
   const currentYear = new Date().getFullYear()
   const currentKw = getISOWeek(new Date())
 
+  // Report list (only Wochenübersicht reports)
+  const { data, isLoading: listLoading } = useReports('wochenuebersicht')
+  const reports = data?.items ?? []
+
+  // Generation form state (admin only)
   const [jahr, setJahr] = useState(currentYear)
   const [kwVon, setKwVon] = useState(1)
   const [kwBis, setKwBis] = useState(currentKw)
   const [exportType, setExportType] = useState('c2s')
-  const [loading, setLoading] = useState(false)
-  const [error, setError] = useState('')
-  const [success, setSuccess] = useState('')
+  const [genError, setGenError] = useState('')
+  const [genSuccess, setGenSuccess] = useState('')
 
-  const handleDownload = async () => {
-    setError('')
-    setSuccess('')
+  const generateMutation = useGenerateWochenuebersicht()
+  const deleteMutation = useDeleteReports()
 
+  // ICD Upload state
+  const [uploadFile, setUploadFile] = useState<File | null>(null)
+  const [uploadError, setUploadError] = useState('')
+  const [uploadSuccess, setUploadSuccess] = useState('')
+  const uploadMutation = useUploadWochenuebersichtIcd()
+
+  // Drag state
+  const [isDragOver, setIsDragOver] = useState(false)
+
+  const handleGenerate = async () => {
+    setGenError('')
+    setGenSuccess('')
     if (kwVon > kwBis) {
-      setError('KW von darf nicht größer als KW bis sein.')
+      setGenError('KW von darf nicht größer als KW bis sein.')
       return
     }
-
-    setLoading(true)
     try {
-      const res = await api.get('/reports/wochenuebersicht', {
-        params: { export_type: exportType, jahr, kw_von: kwVon, kw_bis: kwBis },
-        responseType: 'blob',
+      const result = await generateMutation.mutateAsync({
+        export_type: exportType, jahr, kw_von: kwVon, kw_bis: kwBis,
       })
-
-      const blob = new Blob([res.data as BlobPart], {
-        type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-      })
-      const blobUrl = window.URL.createObjectURL(blob)
-      const link = document.createElement('a')
-      link.href = blobUrl
-
-      const contentDisposition = res.headers['content-disposition']
-      let filename = `Wochenuebersicht_${exportType}_KW${kwBis}_${jahr}.xlsx`
-      if (contentDisposition) {
-        const match = contentDisposition.match(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/)
-        if (match) filename = match[1].replace(/['"]/g, '')
-      }
-
-      link.download = filename
-      document.body.appendChild(link)
-      link.click()
-      document.body.removeChild(link)
-      window.URL.revokeObjectURL(blobUrl)
-      setSuccess(`Wochenübersicht KW ${kwVon}–${kwBis}/${jahr} wurde heruntergeladen.`)
+      const typeLabel = REPORT_TYPE_LABELS[result.report_type] ?? result.report_type
+      setGenSuccess(`Wochenübersicht "${typeLabel}" KW ${kwVon}–${kwBis}/${jahr} wurde generiert.`)
     } catch {
-      setError('Fehler beim Herunterladen der Wochenübersicht.')
-    } finally {
-      setLoading(false)
+      setGenError('Fehler beim Generieren der Wochenübersicht.')
     }
   }
 
+  const downloadReport = (reportId: number) => {
+    api.get(`/reports/download/${reportId}`, { responseType: 'blob' })
+      .then((res) => {
+        const blob = new Blob([res.data as BlobPart], {
+          type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+        })
+        const blobUrl = window.URL.createObjectURL(blob)
+        const link = document.createElement('a')
+        link.href = blobUrl
+        const contentDisposition = res.headers['content-disposition']
+        let filename = `wochenuebersicht_${reportId}.xlsx`
+        if (contentDisposition) {
+          const match = contentDisposition.match(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/)
+          if (match) filename = match[1].replace(/['"]/g, '')
+        }
+        link.download = filename
+        document.body.appendChild(link)
+        link.click()
+        document.body.removeChild(link)
+        window.URL.revokeObjectURL(blobUrl)
+      })
+      .catch(() => {
+        const token = localStorage.getItem('access_token')
+        if (token) {
+          window.open(`/api/reports/download/${reportId}?token=${encodeURIComponent(token)}`, '_blank')
+        }
+      })
+  }
+
+  const handleUpload = async () => {
+    if (!uploadFile) return
+    setUploadError('')
+    setUploadSuccess('')
+    try {
+      const result = await uploadMutation.mutateAsync(uploadFile)
+      const errorCount = result.errors?.length ?? 0
+      setUploadSuccess(
+        `${result.updated} ICD-Codes aktualisiert.` +
+        (errorCount > 0 ? ` ${errorCount} Fehler.` : ''),
+      )
+      setUploadFile(null)
+    } catch {
+      setUploadError('Fehler beim Hochladen der ICD-Datei.')
+    }
+  }
+
+  const handleDrop = useCallback((e: React.DragEvent) => {
+    e.preventDefault()
+    setIsDragOver(false)
+    const file = e.dataTransfer.files[0]
+    if (file && (file.name.endsWith('.xlsx') || file.name.endsWith('.xls'))) {
+      setUploadFile(file)
+    }
+  }, [])
+
+  const handleDragOver = useCallback((e: React.DragEvent) => {
+    e.preventDefault()
+    setIsDragOver(true)
+  }, [])
+
+  const handleDragLeave = useCallback(() => {
+    setIsDragOver(false)
+  }, [])
+
   return (
     <div className="p-6 space-y-6">
       <h1 className="text-2xl font-bold">Wochenübersicht</h1>
 
+      {/* Generation form (admin only) */}
+      {isAdmin && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="text-lg flex items-center gap-2">
+              <FileSpreadsheet className="h-5 w-5" />
+              Wochenübersicht generieren
+            </CardTitle>
+          </CardHeader>
+          <CardContent className="space-y-4">
+            <p className="text-sm text-muted-foreground">
+              Erstellt eine Excel-Datei mit den Falldaten pro Kalenderwoche,
+              die an die DAK zur ICD-Code-Eingabe gesendet wird.
+            </p>
+
+            <div className="flex flex-wrap items-end gap-4">
+              <div className="space-y-1">
+                <Label htmlFor="wu-jahr">Jahr</Label>
+                <Input
+                  id="wu-jahr"
+                  type="number"
+                  value={jahr}
+                  onChange={(e) => setJahr(Number(e.target.value))}
+                  className="w-28"
+                  min={2020}
+                  max={2030}
+                />
+              </div>
+              <div className="space-y-1">
+                <Label htmlFor="wu-kw-von">KW von</Label>
+                <Input
+                  id="wu-kw-von"
+                  type="number"
+                  value={kwVon}
+                  onChange={(e) => setKwVon(Number(e.target.value))}
+                  className="w-24"
+                  min={1}
+                  max={53}
+                />
+              </div>
+              <div className="space-y-1">
+                <Label htmlFor="wu-kw-bis">KW bis</Label>
+                <Input
+                  id="wu-kw-bis"
+                  type="number"
+                  value={kwBis}
+                  onChange={(e) => setKwBis(Number(e.target.value))}
+                  className="w-24"
+                  min={1}
+                  max={53}
+                />
+              </div>
+              <div className="space-y-1">
+                <Label>Exporttyp</Label>
+                <Select value={exportType} onValueChange={setExportType}>
+                  <SelectTrigger className="w-52">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {EXPORT_TYPES.map((t) => (
+                      <SelectItem key={t.value} value={t.value}>{t.label}</SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              </div>
+              <Button onClick={handleGenerate} disabled={generateMutation.isPending}>
+                {generateMutation.isPending ? (
+                  <>
+                    <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                    Wird generiert...
+                  </>
+                ) : (
+                  <>
+                    <Plus className="mr-2 h-4 w-4" />
+                    Generieren
+                  </>
+                )}
+              </Button>
+            </div>
+
+            {genError && (
+              <Alert variant="destructive">
+                <AlertDescription>{genError}</AlertDescription>
+              </Alert>
+            )}
+            {genSuccess && (
+              <Alert>
+                <AlertDescription>{genSuccess}</AlertDescription>
+              </Alert>
+            )}
+          </CardContent>
+        </Card>
+      )}
+
+      {/* Reports table (all roles) */}
+      <Card>
+        <CardHeader>
+          <CardTitle className="text-lg">
+            Bisherige Wochenübersichten ({reports.length})
+          </CardTitle>
+        </CardHeader>
+        <CardContent>
+          {listLoading ? (
+            <div className="space-y-2">
+              {Array.from({ length: 3 }).map((_, i) => (
+                <Skeleton key={i} className="h-10 w-full" />
+              ))}
+            </div>
+          ) : reports.length > 0 ? (
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>Berichtsdatum</TableHead>
+                  <TableHead>Jahr</TableHead>
+                  <TableHead>KW</TableHead>
+                  <TableHead>Typ</TableHead>
+                  <TableHead>Erstellt am</TableHead>
+                  <TableHead className="text-right">Aktion</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {reports.map((r) => (
+                  <TableRow key={r.id}>
+                    <TableCell>{formatDate(r.report_date)}</TableCell>
+                    <TableCell>{r.jahr}</TableCell>
+                    <TableCell>KW {r.kw}</TableCell>
+                    <TableCell>{REPORT_TYPE_LABELS[r.report_type] ?? r.report_type}</TableCell>
+                    <TableCell>{formatDateTime(r.generated_at)}</TableCell>
+                    <TableCell className="text-right">
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        onClick={() => downloadReport(r.id)}
+                      >
+                        <Download className="mr-1.5 h-4 w-4" />
+                        Download
+                      </Button>
+                      {isAdmin && (
+                        <Button
+                          variant="ghost"
+                          size="sm"
+                          className="ml-2 text-destructive"
+                          onClick={async () => {
+                            await deleteMutation.mutateAsync([r.id])
+                          }}
+                          disabled={deleteMutation.isPending}
+                        >
+                          Löschen
+                        </Button>
+                      )}
+                    </TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          ) : (
+            <p className="py-8 text-center text-muted-foreground">
+              Keine Wochenübersichten vorhanden.
+            </p>
+          )}
+        </CardContent>
+      </Card>
+
+      {/* ICD Upload (all roles) */}
       <Card>
         <CardHeader>
           <CardTitle className="text-lg flex items-center gap-2">
-            <FileSpreadsheet className="h-5 w-5" />
-            Wochenübersicht für die DAK generieren
+            <Upload className="h-5 w-5" />
+            ICD-Codes hochladen
           </CardTitle>
         </CardHeader>
         <CardContent className="space-y-4">
           <p className="text-sm text-muted-foreground">
-            Erstellt eine Excel-Datei mit den Falldaten pro Kalenderwoche,
-            die an die DAK zur ICD-Code-Eingabe gesendet wird.
+            Laden Sie die ausgefüllte Wochenübersicht mit den ergänzten ICD-Codes hoch.
+            Die ICD-Codes werden automatisch den Fällen anhand der KVNR zugeordnet.
           </p>
 
-          <div className="flex flex-wrap items-end gap-4">
-            <div className="space-y-1">
-              <Label htmlFor="wu-jahr">Jahr</Label>
-              <Input
-                id="wu-jahr"
-                type="number"
-                value={jahr}
-                onChange={(e) => setJahr(Number(e.target.value))}
-                className="w-28"
-                min={2020}
-                max={2030}
-              />
-            </div>
-            <div className="space-y-1">
-              <Label htmlFor="wu-kw-von">KW von</Label>
-              <Input
-                id="wu-kw-von"
-                type="number"
-                value={kwVon}
-                onChange={(e) => setKwVon(Number(e.target.value))}
-                className="w-24"
-                min={1}
-                max={53}
-              />
-            </div>
-            <div className="space-y-1">
-              <Label htmlFor="wu-kw-bis">KW bis</Label>
-              <Input
-                id="wu-kw-bis"
-                type="number"
-                value={kwBis}
-                onChange={(e) => setKwBis(Number(e.target.value))}
-                className="w-24"
-                min={1}
-                max={53}
-              />
-            </div>
-            <div className="space-y-1">
-              <Label>Exporttyp</Label>
-              <Select value={exportType} onValueChange={setExportType}>
-                <SelectTrigger className="w-52">
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  {EXPORT_TYPES.map((t) => (
-                    <SelectItem key={t.value} value={t.value}>{t.label}</SelectItem>
-                  ))}
-                </SelectContent>
-              </Select>
-            </div>
-            <Button onClick={handleDownload} disabled={loading}>
-              {loading ? (
-                <>
-                  <Loader2 className="mr-2 h-4 w-4 animate-spin" />
-                  Wird generiert...
-                </>
-              ) : (
-                <>
-                  <Download className="mr-2 h-4 w-4" />
-                  Herunterladen
-                </>
-              )}
-            </Button>
+          <div
+            className={`border-2 border-dashed rounded-lg p-8 text-center transition-colors ${
+              isDragOver
+                ? 'border-primary bg-primary/5'
+                : 'border-muted-foreground/25 hover:border-muted-foreground/50'
+            }`}
+            onDrop={handleDrop}
+            onDragOver={handleDragOver}
+            onDragLeave={handleDragLeave}
+          >
+            {uploadFile ? (
+              <div className="space-y-2">
+                <p className="text-sm font-medium">{uploadFile.name}</p>
+                <p className="text-xs text-muted-foreground">
+                  {(uploadFile.size / 1024).toFixed(1)} KB
+                </p>
+                <div className="flex justify-center gap-2">
+                  <Button size="sm" onClick={handleUpload} disabled={uploadMutation.isPending}>
+                    {uploadMutation.isPending ? (
+                      <>
+                        <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                        Wird importiert...
+                      </>
+                    ) : (
+                      <>
+                        <Upload className="mr-2 h-4 w-4" />
+                        Hochladen
+                      </>
+                    )}
+                  </Button>
+                  <Button
+                    size="sm"
+                    variant="outline"
+                    onClick={() => setUploadFile(null)}
+                  >
+                    Abbrechen
+                  </Button>
+                </div>
+              </div>
+            ) : (
+              <div className="space-y-2">
+                <p className="text-sm text-muted-foreground">
+                  Excel-Datei hierher ziehen oder
+                </p>
+                <label>
+                  <input
+                    type="file"
+                    accept=".xlsx,.xls"
+                    className="hidden"
+                    onChange={(e) => {
+                      const file = e.target.files?.[0]
+                      if (file) setUploadFile(file)
+                    }}
+                  />
+                  <Button variant="outline" size="sm" asChild>
+                    <span>Datei auswählen</span>
+                  </Button>
+                </label>
+              </div>
+            )}
           </div>
 
-          {error && (
+          {uploadError && (
             <Alert variant="destructive">
-              <AlertDescription>{error}</AlertDescription>
+              <AlertDescription>{uploadError}</AlertDescription>
             </Alert>
           )}
-          {success && (
+          {uploadSuccess && (
             <Alert>
-              <AlertDescription>{success}</AlertDescription>
+              <AlertDescription>{uploadSuccess}</AlertDescription>
+            </Alert>
+          )}
+          {uploadMutation.data && (uploadMutation.data.errors?.length ?? 0) > 0 && (
+            <Alert variant="destructive">
+              <AlertDescription>
+                <details>
+                  <summary className="cursor-pointer">
+                    {uploadMutation.data.errors.length} Fehler beim Import
+                  </summary>
+                  <ul className="mt-2 text-xs space-y-1">
+                    {uploadMutation.data.errors.map((err, i) => (
+                      <li key={i}>{err}</li>
+                    ))}
+                  </ul>
+                </details>
+              </AlertDescription>
             </Alert>
           )}
         </CardContent>