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/api/admin/companion/feedback/route.ts

@@ -0,0 +1,129 @@
+import { NextRequest, NextResponse } from 'next/server'
+
+/**
+ * POST /api/admin/companion/feedback
+ * Submit feedback (bug report, feature request, general feedback)
+ * Proxy to backend /api/feedback
+ */
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json()
+
+    // Validate required fields
+    if (!body.type || !body.title || !body.description) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: 'Missing required fields: type, title, description',
+        },
+        { status: 400 }
+      )
+    }
+
+    // Validate feedback type
+    const validTypes = ['bug', 'feature', 'feedback']
+    if (!validTypes.includes(body.type)) {
+      return NextResponse.json(
+        {
+          success: false,
+          error: 'Invalid feedback type. Must be: bug, feature, or feedback',
+        },
+        { status: 400 }
+      )
+    }
+
+    // TODO: Replace with actual backend call
+    // const backendUrl = process.env.BACKEND_URL || 'http://localhost:8000'
+    // const response = await fetch(`${backendUrl}/api/feedback`, {
+    //   method: 'POST',
+    //   headers: {
+    //     'Content-Type': 'application/json',
+    //     // Add auth headers
+    //   },
+    //   body: JSON.stringify({
+    //     type: body.type,
+    //     title: body.title,
+    //     description: body.description,
+    //     screenshot: body.screenshot,
+    //     sessionId: body.sessionId,
+    //     metadata: {
+    //       ...body.metadata,
+    //       source: 'companion',
+    //       timestamp: new Date().toISOString(),
+    //       userAgent: request.headers.get('user-agent'),
+    //     },
+    //   }),
+    // })
+    //
+    // if (!response.ok) {
+    //   throw new Error(`Backend responded with ${response.status}`)
+    // }
+    //
+    // const data = await response.json()
+    // return NextResponse.json(data)
+
+    // Mock response - just acknowledge the submission
+    const feedbackId = `fb-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`
+
+    console.log('Feedback received:', {
+      id: feedbackId,
+      type: body.type,
+      title: body.title,
+      description: body.description.substring(0, 100) + '...',
+      hasScreenshot: !!body.screenshot,
+      sessionId: body.sessionId,
+    })
+
+    return NextResponse.json({
+      success: true,
+      message: 'Feedback submitted successfully',
+      data: {
+        feedbackId,
+        submittedAt: new Date().toISOString(),
+      },
+    })
+  } catch (error) {
+    console.error('Submit feedback error:', error)
+    return NextResponse.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Unknown error',
+      },
+      { status: 500 }
+    )
+  }
+}
+
+/**
+ * GET /api/admin/companion/feedback
+ * Get feedback history (admin only)
+ */
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url)
+    const type = searchParams.get('type')
+    const limit = parseInt(searchParams.get('limit') || '10')
+
+    // TODO: Replace with actual backend call
+
+    // Mock response - empty list for now
+    return NextResponse.json({
+      success: true,
+      data: {
+        feedback: [],
+        total: 0,
+        page: 1,
+        limit,
+      },
+    })
+  } catch (error) {
+    console.error('Get feedback error:', error)
+    return NextResponse.json(
+      {
+        success: false,
+        error: error instanceof Error ? error.message : 'Unknown error',
+      },
+      { status: 500 }
+    )
+  }
+}