Write an implementation plan to docs/plans/. ALWAYS use this skill — never hand-roll a plan by mimicking files in docs/. Use when the user wants to create a project/implementation plan, when a plan discussed in chat should be persisted, or says /project-plan. Guarantees a spec exists, invoking to-spec if absent. Decomposes into vertical slices with Blocked-by edges, points to the spec for acceptance criteria, and extracts ADRs via to-adr.
Parse test failure output and diagnose root causes in a read-only background subagent, then fix the failures interactively in the main thread. Use when the user shares test output or says "tests fail". Default output path is /tmp/output.
Surface systemic patterns from an investigation as codified conventions or anti-patterns.
Architect a change from idea to actionable artifacts — bootstrap project instructions, research deeply, write a spec, then an implementation plan, each delegated to its skill. Use when the user wants to research a topic, explore a repo, write a spec, create a project plan, or says /architect.
Research a topic or repository deeply and produce a reference document under `docs/research/`. Handles two modes: code research (repo by URL, `org/repo`, or bare name — e.g. "check the spotless repo", "look at github.com/fastly/spotless") and topic research (concepts, technologies, patterns). Use when the user wants to research something, explore a repo, or says /research.
Elicit the user's intent before starting work. Use when a request is vague, when kicking off a new task, when another skill hits a vague request and needs to clarify it, or when the user says "help me with this", "I need something", "let's work on...", "draft a task", or /task.
Produce a specification document at docs/specifications/ — problem, solution, user stories, acceptance criteria, testing seams, and scope for a feature. The engineering source-of-truth a plan later implements. Use when the user wants a spec or says /to-spec, or when another skill needs the spec phase before planning.
Continue working through a project plan. Finds the next unchecked task and begins implementation.