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>

klausur-service/embedding-service/requirements.txt

@@ -0,0 +1,23 @@
+# Embedding Service Dependencies
+# This service handles ML-heavy operations (embeddings, re-ranking, PDF extraction)
+
+# Web Framework
+fastapi>=0.109.0
+uvicorn[standard]>=0.27.0
+pydantic>=2.0.0
+python-multipart>=0.0.6
+
+# ML / Embeddings
+torch>=2.0.0
+sentence-transformers>=2.2.0
+
+# PDF Extraction
+unstructured>=0.12.0
+pypdf>=4.0.0
+python-magic>=0.4.27
+
+# HTTP Client (for OpenAI/Cohere API calls)
+httpx>=0.26.0
+
+# Utilities
+python-dotenv>=1.0.0