Extends DashboardKPIs with total_abgerechnet/pending_abrechnung. Adds
new GET /reports/dashboard/top-gutachter endpoint (admin-only). Frontend
shows Abrechnungsstatus donut + Gutachter-Verteilung progress bars in a
new third row, visible only to admins.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add full statistics page replacing placeholder: 4 KPI cards (total, Bestätigung,
Alternative, Uncodiert), stacked bar chart for gutachten types per KW, donut chart
for type distribution, grouped bar chart for therapy changes per KW, and horizontal
bar chart for therapy change reasons. Includes new backend endpoint and service
function combining sheet3/sheet4 data with KPI aggregation. Also adds feature
roadmap todo.md.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backend: two new endpoints /reports/dashboard/yearly-comparison and
/reports/dashboard/top-icd for multi-year KW case counts and ICD
frequency aggregation.
Frontend: grouped bar chart comparing KW across years (2022+) and
a ranked top 10 ICD list with progress bars on the Dashboard.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace manual useState/useEffect data fetching with useDashboard hook
that uses TanStack Query for automatic caching, refetching, and loading
state management.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
