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/AIToolsSidebar.tsx

@@ -0,0 +1,406 @@
+'use client'
+
+/**
+ * AI Tools Sidebar
+ *
+ * Kompakte Sidebar-Komponente für Cross-Navigation zwischen KI-Werkzeugen.
+ * Zeigt Shared Resources 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'
+
+export type AIToolId = 'llm-compare' | 'test-quality' | 'gpu'
+
+export interface AIToolModule {
+  id: AIToolId
+  name: string
+  href: string
+  description: string
+  icon: string
+}
+
+export const AI_TOOLS_MODULES: AIToolModule[] = [
+  {
+    id: 'llm-compare',
+    name: 'LLM Vergleich',
+    href: '/ai/llm-compare',
+    description: 'KI-Provider vergleichen',
+    icon: '⚖️',
+  },
+  {
+    id: 'test-quality',
+    name: 'Test Quality (BQAS)',
+    href: '/ai/test-quality',
+    description: 'Golden Suite & Tests',
+    icon: '🧪',
+  },
+  {
+    id: 'gpu',
+    name: 'GPU Infrastruktur',
+    href: '/ai/gpu',
+    description: 'vast.ai Management',
+    icon: '🖥️',
+  },
+]
+
+export interface AIToolsSidebarProps {
+  /** ID des aktuell aktiven Tools */
+  currentTool: AIToolId
+  /** Optional: Kompakter Modus (nur Icons) */
+  compact?: boolean
+  /** Optional: Zusätzliche CSS-Klassen */
+  className?: string
+}
+
+export interface AIToolsSidebarResponsiveProps extends AIToolsSidebarProps {
+  /** Position des FAB auf Mobile */
+  fabPosition?: 'bottom-right' | 'bottom-left'
+}
+
+// Icons für die Tools
+const ToolIcon = ({ id }: { id: string }) => {
+  switch (id) {
+    case 'llm-compare':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+            d="M3 6l3 1m0 0l-3 9a5.002 5.002 0 006.001 0M6 7l3 9M6 7l6-2m6 2l3-1m-3 1l-3 9a5.002 5.002 0 006.001 0M18 7l3 9m-3-9l-6-2m0-2v2m0 16V5m0 16H9m3 0h3" />
+        </svg>
+      )
+    case 'test-quality':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+            d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z" />
+        </svg>
+      )
+    case 'gpu':
+      return (
+        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+            d="M9 3v2m6-2v2M9 19v2m6-2v2M5 9H3m2 6H3m18-6h-2m2 6h-2M7 19h10a2 2 0 002-2V7a2 2 0 00-2-2H7a2 2 0 00-2 2v10a2 2 0 002 2zM9 9h6v6H9V9z" />
+        </svg>
+      )
+    default:
+      return null
+  }
+}
+
+// Werkzeug-Icon für Header
+const WrenchIcon = () => (
+  <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+      d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z" />
+    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+  </svg>
+)
+
+export function AIToolsSidebar({
+  currentTool,
+  compact = false,
+  className = '',
+}: AIToolsSidebarProps) {
+  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-violet-50 to-purple-50 dark:from-violet-900/20 dark:to-purple-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-violet-600 dark:text-violet-400">
+              <WrenchIcon />
+            </span>
+            <span className="font-semibold text-slate-700 dark:text-slate-200 text-sm">
+              KI-Werkzeuge
+            </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">
+          {/* Tool Links */}
+          <div className="space-y-1">
+            {AI_TOOLS_MODULES.map((tool) => (
+              <Link
+                key={tool.id}
+                href={tool.href}
+                className={`flex items-center gap-3 px-3 py-2 rounded-lg transition-colors ${
+                  currentTool === tool.id
+                    ? 'bg-violet-100 dark:bg-violet-900/30 text-violet-700 dark:text-violet-300 font-medium'
+                    : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-gray-700'
+                }`}
+              >
+                <ToolIcon id={tool.id} />
+                <div className="flex-1 min-w-0">
+                  <div className="text-sm font-medium truncate">{tool.name}</div>
+                  <div className="text-xs text-slate-500 dark:text-slate-500 truncate">
+                    {tool.description}
+                  </div>
+                </div>
+                {currentTool === tool.id && (
+                  <span className="flex-shrink-0 w-2 h-2 bg-violet-500 rounded-full" />
+                )}
+              </Link>
+            ))}
+          </div>
+
+          {/* Shared Resources 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">
+              Shared Resources
+            </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-2 text-xs">
+                <span title="GPU Infrastruktur">🖥️</span>
+                <span className="text-slate-400">→</span>
+                <span title="LLM Vergleich">⚖️</span>
+                <span className="text-slate-400">→</span>
+                <span title="Test Quality">🧪</span>
+              </div>
+            </div>
+            <div className="text-xs text-slate-400 mt-1 px-1">
+              GPU-Ressourcen fuer Modelle & Tests
+            </div>
+          </div>
+
+          {/* Quick Info zum aktuellen Tool */}
+          <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">
+              {currentTool === 'llm-compare' && (
+                <span>Vergleichen Sie LLM-Antworten verschiedener Provider</span>
+              )}
+              {currentTool === 'test-quality' && (
+                <span>Ueberwachen Sie die Qualitaet der KI-Ausgaben</span>
+              )}
+              {currentTool === 'gpu' && (
+                <span>Verwalten Sie GPU-Instanzen fuer ML-Training</span>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  )
+}
+
+/**
+ * Responsive Tools Sidebar mit Mobile FAB + Drawer
+ *
+ * Desktop (xl+): Fixierte Sidebar rechts
+ * Mobile/Tablet: Floating Action Button unten rechts, öffnet Drawer
+ */
+export function AIToolsSidebarResponsive({
+  currentTool,
+  compact = false,
+  className = '',
+  fabPosition = 'bottom-right',
+}: AIToolsSidebarResponsiveProps) {
+  const [isMobileOpen, setIsMobileOpen] = useState(false)
+
+  // Close drawer on 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}`}>
+        <AIToolsSidebar currentTool={currentTool} 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-violet-500 to-purple-500 text-white rounded-full shadow-lg hover:shadow-xl transition-all flex items-center justify-center group`}
+        aria-label="KI-Werkzeuge Navigation oeffnen"
+      >
+        <WrenchIcon />
+        {/* Pulse indicator */}
+        <span className="absolute -top-1 -right-1 w-3 h-3 bg-amber-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-violet-50 to-purple-50 dark:from-violet-900/20 dark:to-purple-900/20">
+              <div className="flex items-center gap-2">
+                <span className="text-violet-600 dark:text-violet-400">
+                  <WrenchIcon />
+                </span>
+                <span className="font-semibold text-slate-700 dark:text-slate-200">
+                  KI-Werkzeuge
+                </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)]">
+              {/* Tool Links */}
+              <div className="space-y-2">
+                {AI_TOOLS_MODULES.map((tool) => (
+                  <Link
+                    key={tool.id}
+                    href={tool.href}
+                    onClick={() => setIsMobileOpen(false)}
+                    className={`flex items-center gap-3 px-4 py-3 rounded-xl transition-all ${
+                      currentTool === tool.id
+                        ? 'bg-violet-100 dark:bg-violet-900/30 text-violet-700 dark:text-violet-300 font-medium shadow-sm'
+                        : 'text-slate-600 dark:text-slate-400 hover:bg-slate-100 dark:hover:bg-gray-800'
+                    }`}
+                  >
+                    <ToolIcon id={tool.id} />
+                    <div className="flex-1">
+                      <div className="text-base font-medium">{tool.name}</div>
+                      <div className="text-sm text-slate-500 dark:text-slate-500">
+                        {tool.description}
+                      </div>
+                    </div>
+                    {currentTool === tool.id && (
+                      <span className="flex-shrink-0 w-2.5 h-2.5 bg-violet-500 rounded-full" />
+                    )}
+                  </Link>
+                ))}
+              </div>
+
+              {/* Shared Resources 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">
+                  Shared Resources
+                </div>
+                <div className="flex items-center justify-center gap-3 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">GPU</span>
+                  </div>
+                  <span className="text-slate-400">→</span>
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">⚖️</span>
+                    <span className="text-xs text-slate-500 mt-1">LLM</span>
+                  </div>
+                  <span className="text-slate-400">→</span>
+                  <div className="flex flex-col items-center">
+                    <span className="text-2xl">🧪</span>
+                    <span className="text-xs text-slate-500 mt-1">BQAS</span>
+                  </div>
+                </div>
+                <div className="text-xs text-slate-400 mt-2 text-center">
+                  GPU-Ressourcen fuer Modelle & Tests
+                </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">
+                  {currentTool === 'llm-compare' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> LLM-Antworten verschiedener Provider vergleichen
+                    </>
+                  )}
+                  {currentTool === 'test-quality' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> Qualitaet der KI-Ausgaben ueberwachen
+                    </>
+                  )}
+                  {currentTool === 'gpu' && (
+                    <>
+                      <strong className="text-slate-700 dark:text-slate-300">Aktuell:</strong> GPU-Instanzen fuer ML-Training verwalten
+                    </>
+                  )}
+                </div>
+              </div>
+
+              {/* Link zur Pipeline */}
+              <div className="pt-4 border-t border-slate-200 dark:border-gray-700">
+                <Link
+                  href="/ai/magic-help"
+                  onClick={() => setIsMobileOpen(false)}
+                  className="flex items-center gap-2 px-3 py-2 text-sm text-teal-600 dark:text-teal-400 hover:bg-teal-50 dark:hover:bg-teal-900/20 rounded-lg transition-colors"
+                >
+                  <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
+                  </svg>
+                  <span>Zur KI-Daten-Pipeline</span>
+                </Link>
+              </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 AIToolsSidebar