feat(iace): show ESAW evidence panel in risk view (B1)

The Risikobewertung page only mentioned the data sources as static prose.
Add a collapsible "Datenquellen & Evidenz" panel sourced from
/iace/risk-data-sources: the real Eurostat ESAW 2023 contact-mode shares
per mode, with license + ready-to-print attribution, and the note that
tiers anchor the ordering while values stay GT-calibrated.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

admin-compliance/app/sdk/iace/[projectId]/risikobewertung/page.tsx

@@ -3,14 +3,17 @@
 import { useParams } from 'next/navigation'
 import { useRiskAssessment } from './_hooks/useRiskAssessment'
 import { useRiskMatrix } from './_hooks/useRiskMatrix'
+import { useRiskDataSources } from './_hooks/useRiskDataSources'
 import { RiskModelCard } from './_components/RiskModelCard'
 import { RiskMatrix } from './_components/RiskMatrix'
+import { RiskDataSources } from './_components/RiskDataSources'
 
 export default function RisikobewertungPage() {
   const params = useParams<{ projectId: string }>()
   const projectId = params.projectId
   const { hazards, suggestions, loading } = useRiskAssessment(projectId)
   const { data: matrix } = useRiskMatrix(projectId)
+  const { data: dataSources } = useRiskDataSources()
 
   return (
     <div className="space-y-6">
@@ -26,6 +29,8 @@ export default function RisikobewertungPage() {
 
       {matrix && matrix.total > 0 && <RiskMatrix data={matrix} />}
 
+      {dataSources && <RiskDataSources data={dataSources} />}
+
       {loading && (
         <div className="text-sm text-gray-500 dark:text-gray-400">Lade Gefaehrdungen…</div>
       )}