Makisuo

Rework a change as if the intended UX and architecture existed from day one, deleting compatibility cruft and accidental complexity. Use when the user asks to remove tech debt, clean up a patch, or rework a change to its intended end state.

Review Effect v4 code, including beta, RC, and release versions, for correct error propagation, resource ownership, cancellation, concurrency, primitive selection, services/layers, schemas, atoms, observability, and tests. Use for requests such as "effect v4 review", "review my Effect 4 changes", "check Effect patterns", or "audit the Effect codebase" when the project uses v4. Supports files, working changes, PR/branch diffs, and repository audits. Reviews with one agent by default; delegation has an explicit total limit. Verify APIs against the installed version. For Effect v3 use effect-review.

This skill should be used when the user asks to "review code", "review my changes", "check effect patterns", "run effect review", "effect review", "review for effect best practices", or wants a comprehensive code review against Effect-TS conventions, branded types, observability, error handling, test coverage, and UI quality.

Enforces Effect-TS patterns for services, errors, layers, and atoms. Use when writing code with Effect.Service, Schema.TaggedError, Layer composition, or effect-atom React components.