Closed Plan

Turn a task into a closed, deterministic checklist — a plan that can be executed top to bottom with no decisions left for execution time.

Treat the plan as a contract: everything is agreed up front, and execution only honours the terms — it never renegotiates. That means the discovery, code-reading, and judgement all happen now, during planning, so whoever executes it later (you or another agent) can work mechanically — no fresh decisions, no second pass over the codebase.

The two hard guarantees

1. No open-ended decisions. Nothing is “decided during execution”, “as appropriate”, or “TBD”. Every choice is already made and written into the step.
2. No gaps or deferrals. The plan covers the whole task end to end. No “handle edge cases later”, no orphaned step whose inputs nothing produces. The output/postcondition of step N satisfies the precondition of step N+1.