[split-required] Split final 43 files (500-668 LOC) to complete refactoring

klausur-service (11 files):
- cv_gutter_repair, ocr_pipeline_regression, upload_api
- ocr_pipeline_sessions, smart_spell, nru_worksheet_generator
- ocr_pipeline_overlays, mail/aggregator, zeugnis_api
- cv_syllable_detect, self_rag

backend-lehrer (17 files):
- classroom_engine/suggestions, generators/quiz_generator
- worksheets_api, llm_gateway/comparison, state_engine_api
- classroom/models (→ 4 submodules), services/file_processor
- alerts_agent/api/wizard+digests+routes, content_generators/pdf
- classroom/routes/sessions, llm_gateway/inference
- classroom_engine/analytics, auth/keycloak_auth
- alerts_agent/processing/rule_engine, ai_processor/print_versions

agent-core (5 files):
- brain/memory_store, brain/knowledge_graph, brain/context_manager
- orchestrator/supervisor, sessions/session_manager

admin-lehrer (5 components):
- GridOverlay, StepGridReview, DevOpsPipelineSidebar
- DataFlowDiagram, sbom/wizard/page

website (2 files):
- DependencyMap, lehrer/abitur-archiv

Other: nibis_ingestion, grid_detection_service, export-doclayout-onnx

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

admin-lehrer/components/ocr/GridOverlay.tsx

@@ -474,76 +474,5 @@ export function GridOverlay({
   )
 }
 
-/**
- * GridStats Component
- */
-interface GridStatsProps {
-  stats: GridData['stats']
-  deskewAngle?: number
-  source?: string
-  className?: string
-}
-
-export function GridStats({ stats, deskewAngle, source, className }: GridStatsProps) {
-  const coveragePercent = Math.round(stats.coverage * 100)
-
-  return (
-    <div className={cn('flex flex-wrap gap-3', className)}>
-      <div className="px-3 py-1.5 bg-green-50 text-green-700 rounded-lg text-sm font-medium">
-        Erkannt: {stats.recognized}
-      </div>
-      {(stats.manual ?? 0) > 0 && (
-        <div className="px-3 py-1.5 bg-blue-50 text-blue-700 rounded-lg text-sm font-medium">
-          Manuell: {stats.manual}
-        </div>
-      )}
-      {stats.problematic > 0 && (
-        <div className="px-3 py-1.5 bg-orange-50 text-orange-700 rounded-lg text-sm font-medium">
-          Problematisch: {stats.problematic}
-        </div>
-      )}
-      <div className="px-3 py-1.5 bg-slate-50 text-slate-600 rounded-lg text-sm font-medium">
-        Leer: {stats.empty}
-      </div>
-      <div className="px-3 py-1.5 bg-indigo-50 text-indigo-700 rounded-lg text-sm font-medium">
-        Abdeckung: {coveragePercent}%
-      </div>
-      {deskewAngle !== undefined && deskewAngle !== 0 && (
-        <div className="px-3 py-1.5 bg-purple-50 text-purple-700 rounded-lg text-sm font-medium">
-          Begradigt: {deskewAngle.toFixed(1)}
-        </div>
-      )}
-      {source && (
-        <div className="px-3 py-1.5 bg-cyan-50 text-cyan-700 rounded-lg text-sm font-medium">
-          Quelle: {source === 'tesseract+grid_service' ? 'Tesseract' : 'Vision LLM'}
-        </div>
-      )}
-    </div>
-  )
-}
-
-/**
- * Legend Component for GridOverlay
- */
-export function GridLegend({ className }: { className?: string }) {
-  return (
-    <div className={cn('flex flex-wrap gap-4 text-sm', className)}>
-      <div className="flex items-center gap-2">
-        <div className="w-4 h-4 rounded border-2 border-green-500 bg-green-500/20" />
-        <span className="text-slate-600">Erkannt</span>
-      </div>
-      <div className="flex items-center gap-2">
-        <div className="w-4 h-4 rounded border-2 border-orange-500 bg-orange-500/30" />
-        <span className="text-slate-600">Problematisch</span>
-      </div>
-      <div className="flex items-center gap-2">
-        <div className="w-4 h-4 rounded border-2 border-blue-500 bg-blue-500/20" />
-        <span className="text-slate-600">Manuell korrigiert</span>
-      </div>
-      <div className="flex items-center gap-2">
-        <div className="w-4 h-4 rounded border-2 border-slate-300 bg-transparent" />
-        <span className="text-slate-600">Leer</span>
-      </div>
-    </div>
-  )
-}
+// Re-export widgets from sibling file for backwards compatibility
+export { GridStats, GridLegend } from './GridOverlayWidgets'

admin-lehrer/components/ocr/GridOverlayWidgets.tsx

@@ -0,0 +1,84 @@
+'use client'
+
+/**
+ * GridOverlay Widgets - GridStats and GridLegend
+ *
+ * Extracted from GridOverlay.tsx to keep each file under 500 LOC.
+ */
+
+import { cn } from '@/lib/utils'
+import type { GridData } from './GridOverlay'
+
+/**
+ * GridStats Component
+ */
+interface GridStatsProps {
+  stats: GridData['stats']
+  deskewAngle?: number
+  source?: string
+  className?: string
+}
+
+export function GridStats({ stats, deskewAngle, source, className }: GridStatsProps) {
+  const coveragePercent = Math.round(stats.coverage * 100)
+
+  return (
+    <div className={cn('flex flex-wrap gap-3', className)}>
+      <div className="px-3 py-1.5 bg-green-50 text-green-700 rounded-lg text-sm font-medium">
+        Erkannt: {stats.recognized}
+      </div>
+      {(stats.manual ?? 0) > 0 && (
+        <div className="px-3 py-1.5 bg-blue-50 text-blue-700 rounded-lg text-sm font-medium">
+          Manuell: {stats.manual}
+        </div>
+      )}
+      {stats.problematic > 0 && (
+        <div className="px-3 py-1.5 bg-orange-50 text-orange-700 rounded-lg text-sm font-medium">
+          Problematisch: {stats.problematic}
+        </div>
+      )}
+      <div className="px-3 py-1.5 bg-slate-50 text-slate-600 rounded-lg text-sm font-medium">
+        Leer: {stats.empty}
+      </div>
+      <div className="px-3 py-1.5 bg-indigo-50 text-indigo-700 rounded-lg text-sm font-medium">
+        Abdeckung: {coveragePercent}%
+      </div>
+      {deskewAngle !== undefined && deskewAngle !== 0 && (
+        <div className="px-3 py-1.5 bg-purple-50 text-purple-700 rounded-lg text-sm font-medium">
+          Begradigt: {deskewAngle.toFixed(1)}
+        </div>
+      )}
+      {source && (
+        <div className="px-3 py-1.5 bg-cyan-50 text-cyan-700 rounded-lg text-sm font-medium">
+          Quelle: {source === 'tesseract+grid_service' ? 'Tesseract' : 'Vision LLM'}
+        </div>
+      )}
+    </div>
+  )
+}
+
+/**
+ * Legend Component for GridOverlay
+ */
+export function GridLegend({ className }: { className?: string }) {
+  return (
+    <div className={cn('flex flex-wrap gap-4 text-sm', className)}>
+      <div className="flex items-center gap-2">
+        <div className="w-4 h-4 rounded border-2 border-green-500 bg-green-500/20" />
+        <span className="text-slate-600">Erkannt</span>
+      </div>
+      <div className="flex items-center gap-2">
+        <div className="w-4 h-4 rounded border-2 border-orange-500 bg-orange-500/30" />
+        <span className="text-slate-600">Problematisch</span>
+      </div>
+      <div className="flex items-center gap-2">
+        <div className="w-4 h-4 rounded border-2 border-blue-500 bg-blue-500/20" />
+        <span className="text-slate-600">Manuell korrigiert</span>
+      </div>
+      <div className="flex items-center gap-2">
+        <div className="w-4 h-4 rounded border-2 border-slate-300 bg-transparent" />
+        <span className="text-slate-600">Leer</span>
+      </div>
+    </div>
+  )
+}