Doc-aware planning skill. Turns a PRD, ADR, existing plan, or raw idea into a tracer-bullet implementation plan via a relentless one-question-at-a-time interview. Reads accepted ADRs and a PRD together as constraints: ADRs fix architectural decisions; the PRD supplies goals, non-goals, and acceptance criteria that gate each phase. Drafts Proposed ADRs — asking whether a decision is new or supersedes an existing one — and updates CONTEXT.md as terms resolve. Optional tribunal stress-test before finalizing. Use when asked to "plan with docs", "plan this ADR", "turn this PRD into a plan", "break this down into phases", "tracer bullets", "review my plan", "stress test this approach", or /plan-with-docs.