[split-required] Split final batch of monoliths >1000 LOC

Python (6 files in klausur-service):
- rbac.py (1,132 → 4), admin_api.py (1,012 → 4)
- routes/eh.py (1,111 → 4), ocr_pipeline_geometry.py (1,105 → 5)

Python (2 files in backend-lehrer):
- unit_api.py (1,226 → 6), game_api.py (1,129 → 5)

Website (6 page files):
- 4x klausur-korrektur pages (1,249-1,328 LOC each) → shared components
  in website/components/klausur-korrektur/ (17 shared files)
- companion (1,057 → 10), magic-help (1,017 → 8)

All re-export barrels preserve backward compatibility.
Zero import errors verified.

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

website/components/klausur-korrektur/EinigungModal.tsx

@@ -0,0 +1,110 @@
+'use client'
+
+/**
+ * Einigung (Consensus) Modal.
+ * Shown when first and second examiner grade difference requires manual resolution.
+ */
+
+import type { ExaminerWorkflow } from './workspace-types'
+import { GRADE_LABELS } from './workspace-types'
+
+interface EinigungModalProps {
+  workflow: ExaminerWorkflow
+  einigungGrade: number
+  einigungNotes: string
+  submittingWorkflow: boolean
+  onGradeChange: (grade: number) => void
+  onNotesChange: (notes: string) => void
+  onSubmit: (type: 'agreed' | 'split' | 'escalated') => void
+  onClose: () => void
+}
+
+export default function EinigungModal({
+  workflow, einigungGrade, einigungNotes, submittingWorkflow,
+  onGradeChange, onNotesChange, onSubmit, onClose,
+}: EinigungModalProps) {
+  return (
+    <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+      <div className="bg-white rounded-lg shadow-xl p-6 w-full max-w-lg mx-4">
+        <h3 className="text-lg font-semibold mb-4">Einigung erforderlich</h3>
+
+        {/* Grade comparison */}
+        <div className="bg-slate-50 rounded-lg p-4 mb-4">
+          <div className="grid grid-cols-2 gap-4 text-center">
+            <div>
+              <div className="text-sm text-slate-500">Erstkorrektor</div>
+              <div className="text-2xl font-bold text-blue-600">
+                {workflow.first_result?.grade_points || '-'} P
+              </div>
+            </div>
+            <div>
+              <div className="text-sm text-slate-500">Zweitkorrektor</div>
+              <div className="text-2xl font-bold text-amber-600">
+                {workflow.second_result?.grade_points || '-'} P
+              </div>
+            </div>
+          </div>
+          <div className="text-center mt-2 text-sm text-slate-500">
+            Differenz: {workflow.grade_difference} Punkte
+          </div>
+        </div>
+
+        {/* Final grade selection */}
+        <div className="mb-4">
+          <label className="block text-sm font-medium text-slate-700 mb-2">
+            Endnote festlegen
+          </label>
+          <input
+            type="range"
+            min={Math.min(workflow.first_result?.grade_points || 0, workflow.second_result?.grade_points || 0) - 1}
+            max={Math.max(workflow.first_result?.grade_points || 15, workflow.second_result?.grade_points || 15) + 1}
+            value={einigungGrade}
+            onChange={(e) => onGradeChange(parseInt(e.target.value))}
+            className="w-full"
+          />
+          <div className="text-center text-2xl font-bold mt-2">
+            {einigungGrade} Punkte ({GRADE_LABELS[einigungGrade] || '-'})
+          </div>
+        </div>
+
+        {/* Notes */}
+        <div className="mb-4">
+          <label className="block text-sm font-medium text-slate-700 mb-2">
+            Begruendung
+          </label>
+          <textarea
+            value={einigungNotes}
+            onChange={(e) => onNotesChange(e.target.value)}
+            placeholder="Begruendung fuer die Einigung..."
+            className="w-full p-2 border border-slate-300 rounded-lg text-sm"
+            rows={3}
+          />
+        </div>
+
+        {/* Actions */}
+        <div className="flex gap-2">
+          <button
+            onClick={() => onSubmit('agreed')}
+            disabled={submittingWorkflow || !einigungNotes}
+            className="flex-1 py-2 bg-green-600 text-white rounded-lg hover:bg-green-700 disabled:opacity-50"
+          >
+            Einigung bestaetigen
+          </button>
+          <button
+            onClick={() => onSubmit('escalated')}
+            disabled={submittingWorkflow}
+            className="py-2 px-4 bg-red-100 text-red-700 rounded-lg hover:bg-red-200"
+          >
+            Eskalieren
+          </button>
+          <button
+            onClick={onClose}
+            className="py-2 px-4 bg-slate-100 text-slate-700 rounded-lg hover:bg-slate-200"
+          >
+            Abbrechen
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}