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>

admin-v2/components/ai/AIModuleSidebar.tsx

@@ -0,0 +1,405 @@
+'use client'
+
+/**
+ * AI Module Sidebar
+ *
+ * Kompakte Sidebar-Komponente für Cross-Navigation zwischen AI-Modulen.
+ * Zeigt den Datenfluss und ermöglicht schnelle Navigation.
+ *
+ * Features:
+ * - Desktop: Fixierte Sidebar rechts
+ * - Mobile: Floating Action Button mit Slide-In Drawer
+ */
+
+import Link from 'next/link'
+import { useState, useEffect } from 'react'
+import { AI_MODULES, DATA_FLOW_CONNECTIONS, type AIModuleLink } from '@/types/ai-modules'
+
+export interface AIModuleSidebarProps {
+  /** ID des aktuell aktiven Moduls */
+  currentModule: 'magic-help' | 'ocr-labeling' | 'rag-pipeline' | 'rag'
+  /** Optional: Kompakter Modus (nur Icons) */
+  compact?: boolean
+  /** Optional: Zusätzliche CSS-Klassen */
+  className?: string
+}
+
+export interface AIModuleSidebarResponsiveProps extends AIModuleSidebarProps {
+  /** Position des FAB auf Mobile */
+  fabPosition?: 'bottom-right' | 'bottom-left'
+}
+
+// Icons für die Module
+const ModuleIcon = ({ id }: { id: string }) => {
+  switch (id) {
+    case 'magic-help':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+            d="M5 3v4M3 5h4M6 17v4m-2-2h4m5-16l2.286 6.857L21 12l-5.714 2.143L13 21l-2.286-6.857L5 12l5.714-2.143L13 3z" />
+        </svg>
+      )
+    case 'ocr-labeling':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15.232 5.232l3.536 3.536m-2.036-5.036a2.5 2.5 0 113.536 3.536L6.5 21.036H3v-3.572L16.732 3.732z" />
+        </svg>
+      )
+    case 'rag-pipeline':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15" />
+        </svg>
+      )
+    case 'rag':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
+        </svg>
+      )
+    default:
+      return null
+  }
+}
+
+// Pfeil-Icon für Datenfluss
+const ArrowIcon = () => (
+  <svg className="w-4 h-4 text-slate-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 8l4 4m0 0l-4 4m4-4H3" />
+  </svg>
+)
+
+export function AIModuleSidebar({
+  currentModule,
+  compact = false,
+  className = '',
+}: AIModuleSidebarProps) {
+  const [isExpanded, setIsExpanded] = useState(!compact)
+
+  return (
+    <div className={`bg-white dark:bg-gray-800 rounded-xl shadow-sm border border-slate-200 dark:border-gray-700 overflow-hidden ${className}`}>
+      {/* Header */}
+      <div
+        className="px-4 py-3 bg-gradient-to-r from-teal-50 to-cyan-50 dark:from-teal-900/20 dark:to-cyan-900/20 border-b border-slate-200 dark:border-gray-700 cursor-pointer"
+        onClick={() => setIsExpanded(!isExpanded)}
+      >
+        <div className="flex items-center justify-between">
+          <div className="flex items-center gap-2">
+            <span className="text-teal-600 dark:text-teal-400">
+              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+              </svg>
+            </span>
+            <span className="font-semibold text-slate-700 dark:text-slate-200 text-sm">
+              KI-Daten-Pipeline
+            </span>
+          </div>
+          <svg
+            className={`w-4 h-4 text-slate-400 transition-transform ${isExpanded ? 'rotate-180' : ''}`}
+            fill="none"
+            stroke="currentColor"
+            viewBox="0 0 24 24"
+          >
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
+          </svg>
+        </div>
+      </div>
+
+      {/* Content */}
+      {isExpanded && (
+        <div className="p-3 space-y-3">
+          {/* Module Links */}
+          <div className="space-y-1">
+            {AI_MODULES.map((module) => (
+              <Link
+                key={module.id}
+                href={module.href}
+                className={`flex items-center gap-3 px-3 py-2 rounded-lg transition-colors ${
+                  currentModule === module.id
+                    ? 'bg-teal-100 dark:bg-teal-900/30 text-teal-700 dark:text-teal-300 font-medium'
+                    : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-gray-700'
+                }`}
+              >
+                <ModuleIcon id={module.id} />
+                <div className="flex-1 min-w-0">
+                  <div className="text-sm font-medium truncate">{module.name}</div>
+                  <div className="text-xs text-slate-500 dark:text-slate-500 truncate">
+                    {module.description}
+                  </div>
+                </div>
+                {currentModule === module.id && (
+                  <span className="flex-shrink-0 w-2 h-2 bg-teal-500 rounded-full" />
+                )}
+              </Link>
+            ))}
+          </div>
+
+          {/* Datenfluss-Visualisierung */}
+          <div className="pt-2 border-t border-slate-200 dark:border-gray-700">
+            <div className="text-xs font-medium text-slate-500 dark:text-slate-400 mb-2 px-1">
+              Datenfluss
+            </div>
+            <div className="flex items-center justify-between px-2 py-2 bg-slate-50 dark:bg-gray-900 rounded-lg">
+              <div className="flex items-center gap-1.5 text-xs">
+                <span title="Magic Help">✨</span>
+                <span className="text-slate-400" title="Bidirektional">⟷</span>
+                <span title="OCR-Labeling">🏷️</span>
+                <ArrowIcon />
+                <span title="RAG Pipeline">🔄</span>
+                <ArrowIcon />
+                <span title="Daten & RAG">🔍</span>
+              </div>
+            </div>
+          </div>
+
+          {/* Quick Info zum aktuellen Modul */}
+          <div className="pt-2 border-t border-slate-200 dark:border-gray-700">
+            <div className="text-xs text-slate-500 dark:text-slate-400 px-1">
+              {currentModule === 'magic-help' && (
+                <span>Testen und verbessern Sie die TrOCR-Handschrifterkennung</span>
+              )}
+              {currentModule === 'ocr-labeling' && (
+                <span>Erstellen Sie Ground Truth Daten für das OCR-Training</span>
+              )}
+              {currentModule === 'rag-pipeline' && (
+                <span>Indexieren Sie Dokumente für die semantische Suche</span>
+              )}
+              {currentModule === 'rag' && (
+                <span>Verwalten und durchsuchen Sie indexierte Dokumente</span>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  )
+}
+
+/**
+ * Kompakte Inline-Version für mobile Ansichten
+ */
+export function AIModuleNav({ currentModule }: { currentModule: string }) {
+  return (
+    <div className="flex items-center gap-1 p-1 bg-slate-100 dark:bg-gray-800 rounded-lg">
+      {AI_MODULES.map((module) => (
+        <Link
+          key={module.id}
+          href={module.href}
+          className={`px-3 py-1.5 text-sm rounded-md transition-colors ${
+            currentModule === module.id
+              ? 'bg-white dark:bg-gray-700 text-teal-600 dark:text-teal-400 font-medium shadow-sm'
+              : 'text-slate-600 dark:text-slate-400 hover:text-slate-900 dark:hover:text-slate-200'
+          }`}
+          title={module.description}
+        >
+          {module.name}
+        </Link>
+      ))}
+    </div>
+  )
+}
+
+/**
+ * Responsive Sidebar mit Mobile FAB + Drawer
+ *
+ * Desktop (xl+): Fixierte Sidebar rechts
+ * Mobile/Tablet: Floating Action Button unten rechts, öffnet Drawer
+ */
+export function AIModuleSidebarResponsive({
+  currentModule,
+  compact = false,
+  className = '',
+  fabPosition = 'bottom-right',
+}: AIModuleSidebarResponsiveProps) {
+  const [isMobileOpen, setIsMobileOpen] = useState(false)
+
+  // Close drawer on route change or escape key
+  useEffect(() => {
+    const handleEscape = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setIsMobileOpen(false)
+    }
+    window.addEventListener('keydown', handleEscape)
+    return () => window.removeEventListener('keydown', handleEscape)
+  }, [])
+
+  // Prevent body scroll when drawer is open
+  useEffect(() => {
+    if (isMobileOpen) {
+      document.body.style.overflow = 'hidden'
+    } else {
+      document.body.style.overflow = ''
+    }
+    return () => {
+      document.body.style.overflow = ''
+    }
+  }, [isMobileOpen])
+
+  const fabPositionClasses = fabPosition === 'bottom-right'
+    ? 'right-4 bottom-20'
+    : 'left-4 bottom-20'
+
+  return (
+    <>
+      {/* Desktop: Fixed Sidebar */}
+      <div className={`hidden xl:block fixed right-6 top-24 w-64 z-10 ${className}`}>
+        <AIModuleSidebar currentModule={currentModule} compact={compact} />
+      </div>
+
+      {/* Mobile/Tablet: FAB */}
+      <button
+        onClick={() => setIsMobileOpen(true)}
+        className={`xl:hidden fixed ${fabPositionClasses} z-40 w-14 h-14 bg-gradient-to-r from-teal-500 to-cyan-500 text-white rounded-full shadow-lg hover:shadow-xl transition-all flex items-center justify-center group`}
+        aria-label="KI-Daten-Pipeline Navigation öffnen"
+      >
+        <svg
+          className="w-6 h-6 group-hover:scale-110 transition-transform"
+          fill="none"
+          stroke="currentColor"
+          viewBox="0 0 24 24"
+        >
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+        </svg>
+        {/* Pulse indicator */}
+        <span className="absolute -top-1 -right-1 w-3 h-3 bg-orange-400 rounded-full animate-pulse" />
+      </button>
+
+      {/* Mobile/Tablet: Drawer Overlay */}
+      {isMobileOpen && (
+        <div className="xl:hidden fixed inset-0 z-50">
+          {/* Backdrop */}
+          <div
+            className="absolute inset-0 bg-black/50 backdrop-blur-sm transition-opacity"
+            onClick={() => setIsMobileOpen(false)}
+          />
+
+          {/* Drawer */}
+          <div className="absolute right-0 top-0 bottom-0 w-80 max-w-[85vw] bg-white dark:bg-gray-900 shadow-2xl transform transition-transform animate-slide-in-right">
+            {/* Drawer Header */}
+            <div className="flex items-center justify-between px-4 py-4 border-b border-slate-200 dark:border-gray-700 bg-gradient-to-r from-teal-50 to-cyan-50 dark:from-teal-900/20 dark:to-cyan-900/20">
+              <div className="flex items-center gap-2">
+                <span className="text-teal-600 dark:text-teal-400">
+                  <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+                  </svg>
+                </span>
+                <span className="font-semibold text-slate-700 dark:text-slate-200">
+                  KI-Daten-Pipeline
+                </span>
+              </div>
+              <button
+                onClick={() => setIsMobileOpen(false)}
+                className="p-2 text-slate-400 hover:text-slate-600 dark:hover:text-slate-300 rounded-lg hover:bg-slate-100 dark:hover:bg-gray-800 transition-colors"
+                aria-label="Schließen"
+              >
+                <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+                </svg>
+              </button>
+            </div>
+
+            {/* Drawer Content */}
+            <div className="p-4 space-y-4 overflow-y-auto max-h-[calc(100vh-80px)]">
+              {/* Module Links */}
+              <div className="space-y-2">
+                {AI_MODULES.map((module) => (
+                  <Link
+                    key={module.id}
+                    href={module.href}
+                    onClick={() => setIsMobileOpen(false)}
+                    className={`flex items-center gap-3 px-4 py-3 rounded-xl transition-all ${
+                      currentModule === module.id
+                        ? 'bg-teal-100 dark:bg-teal-900/30 text-teal-700 dark:text-teal-300 font-medium shadow-sm'
+                        : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-gray-800'
+                    }`}
+                  >
+                    <ModuleIcon id={module.id} />
+                    <div className="flex-1">
+                      <div className="text-base font-medium">{module.name}</div>
+                      <div className="text-sm text-slate-500 dark:text-slate-500">
+                        {module.description}
+                      </div>
+                    </div>
+                    {currentModule === module.id && (
+                      <span className="flex-shrink-0 w-2.5 h-2.5 bg-teal-500 rounded-full" />
+                    )}
+                  </Link>
+                ))}
+              </div>
+
+              {/* Datenfluss-Visualisierung */}
+              <div className="pt-4 border-t border-slate-200 dark:border-gray-700">
+                <div className="text-sm font-medium text-slate-500 dark:text-slate-400 mb-3">
+                  Datenfluss
+                </div>
+                <div className="flex items-center justify-center gap-2 p-4 bg-slate-50 dark:bg-gray-800 rounded-xl">
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">✨</span>
+                    <span className="text-xs text-slate-500 mt-1">Magic</span>
+                  </div>
+                  <span className="text-slate-400 text-lg" title="Bidirektional">⟷</span>
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">🏷️</span>
+                    <span className="text-xs text-slate-500 mt-1">OCR</span>
+                  </div>
+                  <ArrowIcon />
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">🔄</span>
+                    <span className="text-xs text-slate-500 mt-1">Pipeline</span>
+                  </div>
+                  <ArrowIcon />
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">🔍</span>
+                    <span className="text-xs text-slate-500 mt-1">RAG</span>
+                  </div>
+                </div>
+              </div>
+
+              {/* Quick Info */}
+              <div className="pt-4 border-t border-slate-200 dark:border-gray-700">
+                <div className="text-sm text-slate-600 dark:text-slate-400 p-3 bg-slate-50 dark:bg-gray-800 rounded-xl">
+                  {currentModule === 'magic-help' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> TrOCR-Handschrifterkennung testen und verbessern
+                    </>
+                  )}
+                  {currentModule === 'ocr-labeling' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Ground Truth Daten für OCR-Training erstellen
+                    </>
+                  )}
+                  {currentModule === 'rag-pipeline' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Dokumente für semantische Suche indexieren
+                    </>
+                  )}
+                  {currentModule === 'rag' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Indexierte Dokumente verwalten und durchsuchen
+                    </>
+                  )}
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* CSS for slide-in animation */}
+      <style jsx>{`
+        @keyframes slide-in-right {
+          from {
+            transform: translateX(100%);
+          }
+          to {
+            transform: translateX(0);
+          }
+        }
+        .animate-slide-in-right {
+          animation: slide-in-right 0.2s ease-out;
+        }
+      `}</style>
+    </>
+  )
+}
+
+export default AIModuleSidebar