Execute the plan item by item.
For each item: run all tests, and once all are green, check it off and commit it separately, then immediately proceed to the next item without reporting or asking.
Do not finish until the checklist is fully checked off.
Stop only if the same problem remains unfixed after trying 3 different approaches, or if you encounter an unplanned design decision.
Do not delete or modify tests to make them pass. For system-level changes such as registry entries and auto-start, only write scripts and label them "to be run manually", then continue.