Review staged/unstaged changes plus commits ahead of origin/main. Produces an HTML report in the OS temp dir, then grills the user with docs on findings.
Disciplined diagnosis loop for hard bugs. Use when the user reports a defect, says "diagnose"/"debug this", describes something broken/throwing/failing/slow, or wants to investigate a misbehavior. Grounds investigation in ADRs and CONTEXT.md so the gap between intended design and observed behavior is always clear. Handles code bugs, sensor-drift bugs, event-misfire bugs, and physical-world noise through a dedicated HITL iteration loop.
Break a plan, spec, or PRD into independently-grabbable implementation slices written as markdown files in docs/issues/ using tracer-bullet vertical slices.
Turn the current conversation into a PRD and write it to docs/prd/ — no interview, just synthesis of what you've already discussed.
Find deepening opportunities in a codebase, informed by the domain language in CONTEXT.md and the decisions in docs/adr/. Use when the user wants to improve architecture, find refactoring opportunities, consolidate tightly-coupled modules, or make a codebase more testable and AI-navigable.