code_workbench

Grill an implementation. Audits code for correctness, security, error handling, testing quality, observability, and overcomplexity. When a spec and/or task list are available, also verifies spec compliance and task completeness. Works on any code — from a full feature with spec and tasks, to a bare git diff with no context. Spawns a separate read-only agent. Use after implementation, before merging, or when the developer agent claims work is done. Triggers on "grill code", "grill my code", "grill the code", "grill implementation", "review code", "review implementation", "audit code", "check implementation", "verify work", "is this actually done".

Produces lean, implementation-ready feature specifications through a focused 4-phase workflow: discovery interview, codebase-aware FR drafting, behavioral scenarios with FR traceability, and a quality gate. Use when planning a feature, designing a specification, writing a spec, preparing a plan, or when asked to design, specify, or plan functionality. Supports --revise mode to systematically address findings from /grill-spec reviews. Use /plan-spec --revise <spec.md> <review.md> to revise a spec based on its adversarial review.