skills

Surface architectural friction in the codebase and design better module interfaces. Uses parallel sub-agents to explore radically different interface designs. Based on "deep modules" philosophy — small interfaces hiding significant complexity. Use when code feels tangled, hard to test, or hard to navigate.

Cook a plan against the project's domain model. Stress-tests terminology, surfaces contradictions with code, and updates CONTEXT.md, UBIQUITOUS_LANGUAGE.md, and ADRs inline as decisions crystallize. Use when planning a feature, refactoring, or any work that touches domain boundaries.

Zoom out to see how code, features, or plans fit into the bigger picture. Maps bounded contexts, traces cross-cutting concerns, surfaces hidden dependencies, and identifies systemic risks. Use when you're lost in details, unfamiliar with an area, or need to understand the full impact of a change.

Interactive QA session where you describe bugs conversationally and the agent files durable GitHub issues using the project's domain language. Explores the codebase in the background for context. Use when reporting bugs, doing QA testing, or filing issues from observations.

Break a spec, plan, or feature into independently-implementable vertical slices (tracer bullets). Each slice cuts through all layers end-to-end. Outputs a task list or GitHub issues. Use after /spec to plan implementation order.

Interview the user to produce a feature spec (PRD), grounded in the project's domain model, context map, and ubiquitous language. Outputs a structured spec document. Use when starting a new feature, enhancement, or significant change.

Implement a feature or fix using pragmatic test-driven development. Tracer-bullet approach — one test, one implementation, repeat. Tests verify behavior through public interfaces, not implementation details. Use when implementing a slice from /slice or any work that needs tests.