The stale comments agent incorrectly changed calculate_diversity_penalty's
max_entropy from log2(3) to log2(9). But this function takes 3-bucket
BUY/SELL/HOLD ratios — max entropy of 3 buckets IS log2(3).
The log2(9) change was correct for the LOGGING in extract_objective
(which displays max_entropy for 9 exposure actions), but wrong for the
penalty function that operates on 3 action categories.
Reverted to log2(3) and restored test assertions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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