Rails New — Generate a New Rails Application

This skill creates a complete, best-practice Rails 8 application with Ruby 4, full rails new option coverage, a working welcome page, and a VS Code Dev Container configuration.

Prerequisites (confirm before generating)

Ask the user for:

1. App name — e.g. my_app (snake_case, no spaces)
2. Database — Default to Sqlite3 for development but ensure that Postgres is supported by default for production
3. CSS framework — Tailwind CSS (recommended), Bootstrap, or plain CSS
4. JavaScript — Importmap (default, no Node required) or ESBuild (if they need npm packages)

If the user hasn't specified, default to: Sqlite3 + Tailwind + ESBuild, full-stack (not API-only).