refactor: Migrate to ESM and Vite for modern build

Updates package.json and index.html to use ES Modules and Vite for development and building. This includes migrating dependencies and removing old build scripts and testing configurations.

Also, simplifies the Gemini API key handling by directly using environment variables and refactors the Gemini response schema for clearer field definitions. Updates React component imports to use ESM paths for better maintainability.

Dockerfile

@@ -1,70 +0,0 @@
-# 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
-# PORT is used by serve for the frontend (Railway will set this)
-ENV PORT=3000
-# FLASK_PORT is used by the Python API server (separate from Railway's PORT)
-ENV FLASK_PORT=5000
-ENV FLASK_DEBUG=false
-ENV VITE_LATEX_API_URL=http://localhost:5000
-
-# Start both services
-CMD ["/app/start.sh"]