Rails 37signals Refactor

Overview

Use this skill when the goal is not a brand-new feature, but a safer path from an existing Rails shape toward 37signals-style architecture. The emphasis is incremental change, behavior preservation, and keeping tests green between steps.

Quick Start

1. Read the current code and identify all callers, side effects, and tests.
2. Read references/conventions.md for the destination architecture.
3. Read references/refactoring-guide.md before changing multiple files or data structures.
4. Add or strengthen characterization tests if behavior is under-specified.
5. Make one small step, run targeted tests, then continue.

Non-Negotiables