effect-ts-codex-skill

Strongly opinionated Effect-TS coding, refactoring, debugging, and testing guidance for TypeScript projects using the `effect` ecosystem. Use when the user is working with Effect, Effect.Schema, `Context.Tag`, `Layer`, fibers/concurrency, `Stream`/`Sink`, `@effect/vitest`, `@effect/platform`, retries/schedules, or migrating from Promise/fp-ts/ZIO-style code to idiomatic Effect. Do not use for generic English uses of the word effect unrelated to the Effect-TS library.