[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/app/admin/companion/_components/RoadmapTab.tsx

@@ -0,0 +1,84 @@
+'use client'
+
+import { roadmapPhases } from './data'
+
+export default function RoadmapTab() {
+  return (
+    <div className="space-y-4">
+      {roadmapPhases.map((phase, index) => (
+        <div
+          key={phase.id}
+          className={`border rounded-xl overflow-hidden ${
+            phase.status === 'completed' ? 'border-green-200 bg-green-50/50' :
+            phase.status === 'in_progress' ? 'border-blue-200 bg-blue-50/50' :
+            phase.status === 'planned' ? 'border-amber-200 bg-amber-50/50' :
+            'border-slate-200 bg-slate-50/50'
+          }`}
+        >
+          <div className="p-4">
+            <div className="flex items-start justify-between mb-2">
+              <div className="flex items-center gap-3">
+                <div className={`w-8 h-8 rounded-full flex items-center justify-center text-sm font-bold ${
+                  phase.status === 'completed' ? 'bg-green-500 text-white' :
+                  phase.status === 'in_progress' ? 'bg-blue-500 text-white' :
+                  phase.status === 'planned' ? 'bg-amber-500 text-white' :
+                  'bg-slate-300 text-slate-600'
+                }`}>
+                  {phase.status === 'completed' ? '✓' : index + 1}
+                </div>
+                <div>
+                  <h3 className="font-semibold text-slate-900">{phase.name}</h3>
+                  <p className="text-sm text-slate-500">{phase.description}</p>
+                </div>
+              </div>
+              <div className="text-right">
+                <span className={`px-2 py-1 rounded text-xs font-medium ${
+                  phase.status === 'completed' ? 'bg-green-100 text-green-800' :
+                  phase.status === 'in_progress' ? 'bg-blue-100 text-blue-800' :
+                  phase.status === 'planned' ? 'bg-amber-100 text-amber-800' :
+                  'bg-slate-100 text-slate-600'
+                }`}>
+                  {phase.status === 'completed' ? 'Abgeschlossen' :
+                   phase.status === 'in_progress' ? 'In Arbeit' :
+                   phase.status === 'planned' ? 'Geplant' : 'Zukunft'}
+                </span>
+                {phase.startDate && (
+                  <div className="text-xs text-slate-400 mt-1">
+                    {phase.startDate} {phase.endDate ? `- ${phase.endDate}` : ''}
+                  </div>
+                )}
+              </div>
+            </div>
+
+            {/* Progress Bar */}
+            <div className="mt-3 mb-3">
+              <div className="flex justify-between text-xs text-slate-500 mb-1">
+                <span>Fortschritt</span>
+                <span>{phase.progress}%</span>
+              </div>
+              <div className="w-full bg-slate-200 rounded-full h-2">
+                <div
+                  className={`h-2 rounded-full transition-all ${
+                    phase.status === 'completed' ? 'bg-green-500' :
+                    phase.status === 'in_progress' ? 'bg-blue-500' :
+                    'bg-amber-500'
+                  }`}
+                  style={{ width: `${phase.progress}%` }}
+                />
+              </div>
+            </div>
+
+            {/* Features */}
+            <div className="flex flex-wrap gap-2">
+              {phase.features.map((feature, i) => (
+                <span key={i} className="px-2 py-1 bg-white border border-slate-200 rounded text-xs text-slate-600">
+                  {feature}
+                </span>
+              ))}
+            </div>
+          </div>
+        </div>
+      ))}
+    </div>
+  )
+}