Elixir Essentials

Verified against Elixir 1.20, Phoenix 1.8, Ecto 3.14 — October 2026

Not for: OTP, Ecto, LiveView, tests — use the specific skill (otp-essentials, ecto-essentials, phoenix-liveview-essentials, testing-essentials).

Phoenix project layout: see project-structure.md.

RULES — Follow these with no exceptions