fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

website/components/wizard/WizardNavigation.tsx

@@ -0,0 +1,53 @@
+'use client'
+
+interface WizardNavigationProps {
+  currentStep: number
+  totalSteps: number
+  onPrev: () => void
+  onNext: () => void
+  showNext?: boolean
+  isLoading?: boolean
+  nextLabel?: string
+  prevLabel?: string
+}
+
+export function WizardNavigation({
+  currentStep,
+  totalSteps,
+  onPrev,
+  onNext,
+  showNext = true,
+  isLoading = false,
+  nextLabel = 'Weiter →',
+  prevLabel = '← Zurueck',
+}: WizardNavigationProps) {
+  return (
+    <div className="flex justify-between mt-8 pt-6 border-t">
+      <button
+        onClick={onPrev}
+        disabled={currentStep === 0 || isLoading}
+        className={`px-6 py-2 rounded-lg transition-colors ${
+          currentStep === 0 || isLoading
+            ? 'bg-gray-200 text-gray-400 cursor-not-allowed'
+            : 'bg-gray-200 text-gray-700 hover:bg-gray-300'
+        }`}
+      >
+        {prevLabel}
+      </button>
+
+      {showNext && currentStep < totalSteps - 1 && (
+        <button
+          onClick={onNext}
+          disabled={isLoading}
+          className={`px-6 py-2 rounded-lg transition-colors ${
+            isLoading
+              ? 'bg-blue-400 cursor-not-allowed'
+              : 'bg-blue-600 text-white hover:bg-blue-700'
+          }`}
+        >
+          {isLoading ? 'Bitte warten...' : nextLabel}
+        </button>
+      )}
+    </div>
+  )
+}