Per standing rule feedback_no_functionality_removal.md: never propose
deleting the magnitude branch as a fallback. Updated the Task 2.2
regression-assertion comments + assertion message to point at the
actual follow-up fixes if the eh+ef≥0.30 gate fails:
- per-magnitude reward shaping
- per-bin advantage weighting
- magnitude curriculum
- state-vector enrichment
No semantic change to the test (still asserts eh+ef≥0.30); only the
guidance comments were reframed.
c0fee5a9bf