The re-solve loop

Learn — nothing new. This node exists because skipping it is why people solve 300 problems and still fail.

Do — re-solve every problem you have not re-solved at day 7 and day 30, timed, from scratch, narrating out loud. Track it in a table: problem, first solve, day 7, day 30, pattern named cold.

Check — you can name the pattern and invariant with the editor closed, a month after first solving it. If you cannot, it does not count as solved.

Ship — the completed progress table in your repo README. The day-30 column is the one that predicts the interview.

Everyone skips this. It is the highest-return hour in the whole track.