f3ad0940c3
The Quickstart-Node API-surface table claimed `warmupPeriod()` was "not exposed on every multi-output class". After the B-series fixes in `todo-detailed.md` and the R3/R8 pass on this branch, every Node indicator class — single- and multi-output, scalar- and candle-input — exposes `warmupPeriod()`. Updated the note accordingly.