planning

Builds and stress-tests implementation plans in two modes. Create mode scans code and docs, asks one question at a time with a recommended answer, runs a blindspot pass when the user is new to the area, then writes a plan file. Review mode scores completeness, feasibility, scope, testability, risk, and assumptions, verifies checkable claims, and writes resolutions back until every dimension reaches 5/5. Use when asked to "create a plan", "plan this feature", "I want to build X", "grill me", "think this through", "blindspot pass", "unknown unknowns", "this is new to me", "review my plan", "rubber duck this", "stress test this plan", "is this plan ready", "get this plan to 5/5", "what am I missing", "verify this claim", "prove this plan", "fact-check this plan", or when the user explicitly wants a plan artifact before implementation. For code review use pr-reviewer; for architecture briefs use define-architecture.