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/app/(admin)/infrastructure/ci-cd/page.tsx

@@ -12,6 +12,7 @@
 
 import { useState, useEffect, useCallback } from 'react'
 import { PagePurpose } from '@/components/common/PagePurpose'
+import { DevOpsPipelineSidebarResponsive } from '@/components/infrastructure/DevOpsPipelineSidebar'
 
 // ============================================================================
 // Types
@@ -364,6 +365,9 @@ export default function CICDPage() {
         defaultCollapsed={true}
       />
 
+      {/* DevOps Pipeline Sidebar */}
+      <DevOpsPipelineSidebarResponsive currentTool="ci-cd" />
+
       {/* Messages */}
       {error && (
         <div className="bg-red-50 border border-red-200 rounded-xl p-4 mb-6">