[split-required] Split remaining 500-680 LOC files (final batch)

website (17 pages + 3 components):
- multiplayer/wizard, middleware/wizard+test-wizard, communication
- builds/wizard, staff-search, voice, sbom/wizard
- foerderantrag, mail/tasks, tools/communication, sbom
- compliance/evidence, uni-crawler, brandbook (already done)
- CollectionsTab, IngestionTab, RiskHeatmap

backend-lehrer (5 files):
- letters_api (641 → 2), certificates_api (636 → 2)
- alerts_agent/db/models (636 → 3)
- llm_gateway/communication_service (614 → 2)
- game/database already done in prior batch

klausur-service (2 files):
- hybrid_vocab_extractor (664 → 2)
- klausur-service/frontend: api.ts (620 → 3), EHUploadWizard (591 → 2)

voice-service (3 files):
- bqas/rag_judge (618 → 3), runner (529 → 2)
- enhanced_task_orchestrator (519 → 2)

studio-v2 (6 files):
- korrektur/[klausurId] (578 → 4), fairness (569 → 2)
- AlertsWizard (552 → 2), OnboardingWizard (513 → 2)
- korrektur/api.ts (506 → 3), geo-lernwelt (501 → 2)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

website/app/admin/rag/components/IngestionHistory.tsx

@@ -0,0 +1,106 @@
+'use client'
+
+import { useState } from 'react'
+import type { IngestionHistoryEntry } from '../types'
+
+interface IngestionHistoryProps {
+  history: IngestionHistoryEntry[]
+}
+
+export function IngestionHistory({ history }: IngestionHistoryProps) {
+  const [showHistory, setShowHistory] = useState(false)
+
+  return (
+    <div className="bg-white rounded-lg border border-slate-200 p-6">
+      <div className="flex items-center justify-between mb-4">
+        <h3 className="text-lg font-semibold text-slate-900">Indexierungs-Historie</h3>
+        <button
+          onClick={() => setShowHistory(!showHistory)}
+          className="text-sm text-slate-600 hover:text-slate-900 font-medium"
+        >
+          {showHistory ? 'Ausblenden' : `Alle anzeigen (${history.length})`}
+        </button>
+      </div>
+
+      {history.length === 0 ? (
+        <p className="text-slate-500 text-sm">Noch keine Indexierungslaeufe durchgefuehrt.</p>
+      ) : (
+        <div className="space-y-3">
+          {(showHistory ? history : history.slice(0, 3)).map((entry) => (
+            <div
+              key={entry.id}
+              className={`rounded-lg p-4 ${
+                entry.status === 'success'
+                  ? 'bg-green-50 border border-green-200'
+                  : 'bg-red-50 border border-red-200'
+              }`}
+            >
+              <div className="flex items-center justify-between mb-2">
+                <div className="flex items-center gap-2">
+                  {entry.status === 'success' ? (
+                    <svg className="w-5 h-5 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
+                    </svg>
+                  ) : (
+                    <svg className="w-5 h-5 text-red-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                    </svg>
+                  )}
+                  <span className="font-medium text-slate-900">
+                    {new Date(entry.started_at || entry.startedAt).toLocaleString('de-DE')}
+                  </span>
+                </div>
+                <span className="text-xs text-slate-500 font-mono">{entry.collection}</span>
+              </div>
+
+              {entry.stats && (
+                <div className="grid grid-cols-4 gap-4 text-sm">
+                  <div>
+                    <span className="text-slate-500">Gefunden:</span>{' '}
+                    <span className="font-medium">{entry.stats.documents_found}</span>
+                  </div>
+                  <div>
+                    <span className="text-slate-500">Indexiert:</span>{' '}
+                    <span className="font-medium text-green-700">{entry.stats.documents_indexed}</span>
+                  </div>
+                  <div>
+                    <span className="text-slate-500">Uebersprungen:</span>{' '}
+                    <span className="font-medium">{entry.stats.documents_skipped}</span>
+                  </div>
+                  <div>
+                    <span className="text-slate-500">Chunks:</span>{' '}
+                    <span className="font-medium">{entry.stats.chunks_created}</span>
+                  </div>
+                </div>
+              )}
+
+              {entry.filters && (
+                <div className="mt-2 flex flex-wrap gap-2">
+                  {entry.filters.year && (
+                    <span className="px-2 py-0.5 bg-slate-200 text-slate-700 text-xs rounded">
+                      Jahr: {entry.filters.year}
+                    </span>
+                  )}
+                  {entry.filters.subject && (
+                    <span className="px-2 py-0.5 bg-slate-200 text-slate-700 text-xs rounded">
+                      Fach: {entry.filters.subject}
+                    </span>
+                  )}
+                  {entry.filters.incremental && (
+                    <span className="px-2 py-0.5 bg-blue-100 text-blue-700 text-xs rounded">
+                      Inkrementell
+                    </span>
+                  )}
+                </div>
+              )}
+
+              {entry.error && (
+                <p className="mt-2 text-sm text-red-700">{entry.error}</p>
+              )}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}