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>

ai-content-generator/Dockerfile

@@ -0,0 +1,34 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies for PDF, Image, and DOCX processing
+RUN apt-get update && apt-get install -y \
+    tesseract-ocr \
+    tesseract-ocr-deu \
+    poppler-utils \
+    libpoppler-cpp-dev \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create necessary directories
+RUN mkdir -p /app/temp /app/uploads
+
+# Expose port
+EXPOSE 8004
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8004/health || exit 1
+
+# Start FastAPI server
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8004"]