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/security/page.tsx

@@ -9,6 +9,7 @@
 
 import { useEffect, useState, useCallback } from 'react'
 import { PagePurpose } from '@/components/common/PagePurpose'
+import { DevOpsPipelineSidebarResponsive } from '@/components/infrastructure/DevOpsPipelineSidebar'
 
 interface ToolStatus {
   name: string
@@ -304,6 +305,9 @@ export default function SecurityDashboardPage() {
         defaultCollapsed={true}
       />
 
+      {/* DevOps Pipeline Sidebar */}
+      <DevOpsPipelineSidebarResponsive currentTool="security" />
+
       {/* Header with Status */}
       <div className="bg-white rounded-xl border border-slate-200 p-6 mb-6">
         <div className="flex justify-between items-center mb-6">