2-layer DeepStack (9x9->24, 24->4), has saved weights and training data.
Passes: reconstruction error 0.0007 vs. mean-baseline 0.14 -- exercises
upDownPass through more than one layer for the first time in the suite.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016K8Gu7Qejd11JbdiHZqYAs