feat(iace): refresh architecture tab + data-flow diagram + E1 ingest script

- architecture.go: DataSources now reflect the real ingested set (ESAW 2023,
  BLS CFOI, OSHA OTM, PRISM, cobot CC-BY, HSE) with their RAG collections;
  risk stage cites BLS + the searchable RAG layer; matrix stage now mentions
  the distance-benchmark dimension.
- Architektur & Datenfluss tab: new DataFlowDiagram — 4 lanes (input →
  knowledge/RAG-evidence → deterministic engine → outputs) with live counts.
- scripts/ingest_iace_kb.sh: idempotent E1 ingest — creates the 2 collections
  and uploads the 6 datasources docs against a configurable RAG_URL (for prod
  Qdrant), with retry.

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

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

@@ -2,6 +2,7 @@
 
 import { useState } from 'react'
 import { useArchitecture, type ArchStage } from './_hooks/useArchitecture'
+import { DataFlowDiagram } from './_components/DataFlowDiagram'
 
 export default function ArchitekturPage() {
   const { data, loading } = useArchitecture()
@@ -26,6 +27,9 @@ export default function ArchitekturPage() {
         </p>
       </div>
 
+      {/* Data-flow overview diagram */}
+      <DataFlowDiagram data={data} />
+
       {/* Pipeline flow */}
       <section className="space-y-2">
         <h2 className="text-sm font-semibold text-gray-700 dark:text-gray-300">Deterministische Pipeline</h2>