ruby-on-railslisted

# Ruby on Rails Best Practices Full-stack Rails 8.1 guide organized as modular rules. Covers MVC core patterns, Active Record, components (jobs, mailer, cable, storage), security, testing, performance, and debugging. ## ROUTING: Which rule file to load **IF working with models, database queries, associations, validations, or migrations:** → Read `rules/core-active-record.md` **IF working with routes, controllers, params, sessions, cookies, or filters:** → Read `rules/core-routing-and-controllers.md` **IF working with views, layouts, partials, ERB templates, or form helpers:** → Read `rules/core-views-and-forms.md` **IF working with background jobs, emails, or WebSocket channels:** → Read `rules/component-jobs-mailer-cable.md` **IF working with file uploads or cloud storage:** → Read `rules/component-active-storage.md` **IF dealing with security concerns (auth, CSRF, XSS, SQL injection, secrets):** → Read `rules/security-best-practices.md` **IF writing or fixing tests:** → Read `rules/testing-patterns.md` **IF optimizing performance or configuring for production:** → Read `rules/perf-caching-and-deployment.md` **IF debugging an error or unexpected behavior:** → Read `rules/debug-tools.md` **IF new to the MVC request cycle or need a top-level orientation:** → Read `rules/core-mvc-request-lifecycle.md` first ## Rule index | Topic | Description | File | |-------|-------------|------| | Sections overview | Categories and reading order | [rules/_sections.md](rules/_se