Hard Eng Plan

• Output = saved PLAN.md: ready plan + UX reference when applicable + baseline evidence + execution recommendation + authorization boundary, or explicit blocking decisions. Planning may produce the plan, research + isolated previews; production implementation waits for readiness + authorization.
• Context = Hard Eng workflow. Reuse current repository evidence + settled decisions; load Research or Codebase Design only when needed.

Routes

Select from the user's intent + actual scope, not a keyword alone. Existing ready plan → continue within its authorization; material change → reopen only the affected decision.