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>

backend/requirements-worker.txt

@@ -0,0 +1,38 @@
+# BreakPilot Transcription Worker Dependencies
+# License: All packages are open source and commercially usable
+
+# Task Queue
+rq>=1.16.0                          # BSD-2-Clause - Redis Queue
+
+# Transcription
+faster-whisper>=1.0.0               # MIT - CTranslate2 Whisper (GPU optimized)
+ctranslate2>=4.0.0                  # MIT - Fast inference engine
+
+# Speaker Diarization
+pyannote.audio>=3.1.0               # MIT - Speaker diarization
+torch>=2.0.0                        # BSD-style - PyTorch
+torchaudio>=2.0.0                   # BSD-style - Audio processing
+
+# Audio Processing
+ffmpeg-python>=0.2.0                # Apache-2.0 - FFmpeg bindings
+soundfile>=0.12.0                   # BSD-3-Clause - Audio file I/O
+librosa>=0.10.0                     # ISC - Audio analysis
+
+# Subtitle Export
+webvtt-py>=0.4.6                    # MIT - WebVTT generation
+pysrt>=1.1.2                        # GPL-3.0 - SRT generation
+
+# MinIO Storage
+minio>=7.2.0                        # Apache-2.0 - S3-compatible client
+
+# Database
+psycopg2-binary>=2.9.0              # LGPL - PostgreSQL adapter
+sqlalchemy>=2.0.0                   # MIT - ORM
+
+# Utilities
+pydantic>=2.0.0                     # MIT - Data validation
+python-dotenv>=1.0.0                # BSD-3-Clause - Environment config
+structlog>=24.0.0                   # Apache-2.0 - Structured logging
+
+# HuggingFace (for model downloads)
+huggingface-hub>=0.20.0             # Apache-2.0 - Model hub access