Precap — the recap written before the work

Write a precap — the recap of a task as if it were already finished — before or during long-running work, then use it to check whether the run is still on the imagined path. Use when the user says "/precap", "precap this", "write the precap", "what will this take", "imagine this is done", or "are we still on track"; at the start of any task expected to span many steps, hours, or sessions; on resume when a precap.md exists in the working directory; and whenever a long-running agent needs to verify it is doing what it set out to do. It investigates the repo, plan, and git state so the imagined path is grounded rather than guessed. Not a substitute for plan approval or for a…