Mini Rails 8 IAM + InertiaJS — Fullstack Developer Test (Carlos Henrique)

[obomprogramador]

Submission — Modern Fullstack Developer Test

AI Usage Disclosure

Assisted by OpenCode (coding agent) using the Big Pickle model for code generation, refactoring, testing and documentation.

Summary

A modern, responsive User Management application built on the required stack:

• Ruby 4.0.6 / Rails 8.0.5.1 monolith with React 19 SPA integrated via Inertia.js (Vite).
• SQLite production-ready WAL mode (primary + cache/queue/cable databases).
• Solid Cache / Solid Queue / Solid Cable — realtime counters, import progress bar and async background jobs, no Redis.
• Rails 8 native authentication (bin/rails generate authentication) customized for admin/user roles (no Devise).
• Tailwind CSS 4 + MobX frontend following Atomic Design.
• Multi-stage Dockerfile using Thruster/Kamal 2 defaults; container deploy-ready.
• Tests: 138 Minitest runs (coverage 99.9%, SimpleCov gate 80%) + 22 Vitest suites.

Use cases covered

• Visitor: self-register as a normal user.
• User: view/edit/delete own profile (redirected after login).
• Admin: dashboard (live totals by role via Solid Cable), full CRUD of users, role toggle, async .csv/.xlsx import with live progress (Solid Queue + Solid Cable).

Docs

• README.md — overview, rules, AI disclosure.
• README_SETUP.md — local setup + deployment on Fly.io, Heroku, AWS, Azure.
• TECH_SPEC.md — technical survey of stack/patterns (English).