1.2: Configure CSS Modules

[justin808]

Overview

Set up CSS Modules styling approach matching the Vercel HN demo.

Parent Epic: #70
Priority: P1

Prerequisites

• 1.1: Initialize Rails 8 Application with React on Rails Pro #71 (1.1: Initialize Rails 8 Application with React on Rails Pro)

Next Issues (after this is complete)

• 4.1: Create Root Layout Component
• 4.2: Create Header Component
• 4.11: Create Loading Skeletons

Acceptance Criteria

• CSS Modules configured in Rspack/bundler
• Global styles file created (app/javascript/styles/globals.css)
• Verify CSS hot reload works in development
• Test that .module.css files are properly scoped

Implementation Notes

• Reference the Vercel HN demo styling: https://github.com/vercel/next-react-server-components
• Ensure CSS modules work correctly with RSC components