Stage 5's stress case: a tabular task that also carries a free-text complaint column. The rubric glibly answers 'gradient-boosted trees / linear first' — advice that silently drops the text column (or worse, invites someone to hash it into meaninglessness). Fix the rubric to detect tabular tasks WITH text_columns and return the accurate mixed recommendation: the ch.39 ladder for the numeric part plus embeddings (ch.40) for the text.
The break is on line 2 — but read the whole snippet first.