feat: Add LaTeX template-based form filling for G2210-11

Replace unreliable visual overlay mode with precise LaTeX templates:

- Add LaTeX template for G2210-11 (Ärztlicher Befundbericht der WAG)
- Create Python Flask backend for LaTeX compilation (latex_service.py, server.py)
- Add frontend latexService.ts for API communication
- Update ReviewPanel with LaTeX mode toggle and preview
- Enhance Gemini prompts with G2210-11 specific field extraction
- Add Dockerfile with TeX Live for Railway deployment
- Update railway.toml to use Docker builder

The LaTeX approach ensures accurate field placement and proper
formatting for German medical/insurance forms.

https://claude.ai/code/session_016pQhdznHZ74Fpkvwr3cLBq

Dockerfile

@@ -0,0 +1,67 @@
+# Multi-stage Dockerfile for AutoForm AI with LaTeX support
+
+# Stage 1: Build Frontend
+FROM node:20-alpine AS frontend-builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source files
+COPY . .
+
+# Build the frontend
+RUN npm run build
+
+# Stage 2: Production image with Python and LaTeX
+FROM python:3.11-slim
+
+# Install TeX Live (minimal installation for form generation)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    texlive-latex-base \
+    texlive-latex-recommended \
+    texlive-latex-extra \
+    texlive-fonts-recommended \
+    texlive-lang-german \
+    texlive-plain-generic \
+    nodejs \
+    npm \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Copy Python requirements and install
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Install serve for static file serving
+RUN npm install -g serve
+
+# Copy the built frontend
+COPY --from=frontend-builder /app/dist ./dist
+
+# Copy Python backend and LaTeX templates
+COPY latex_service.py ./
+COPY server.py ./
+COPY templates ./templates
+
+# Create startup script
+RUN echo '#!/bin/bash\n\
+python server.py &\n\
+serve dist -l ${PORT:-3000}\n\
+' > /app/start.sh && chmod +x /app/start.sh
+
+# Expose ports
+EXPOSE 3000 5000
+
+# Environment variables
+ENV PORT=3000
+ENV FLASK_DEBUG=false
+ENV VITE_LATEX_API_URL=http://localhost:5000
+
+# Start both services
+CMD ["/app/start.sh"]