Initial setup of frontend and backend

frontend/Dockerfile

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+# Development Dockerfile for the frontend
+FROM node:24-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY package*.json ./
+RUN npm ci
+
+# Copy source (will be overridden by volume mount in dev)
+COPY . .
+
+# Expose Vite dev server port
+EXPOSE 5173
+
+# Run Vite dev server with host flag for Docker
+CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]