Research-validated design for fixing critical DQN issues:
- CQL regularization for offline RL training on historical data
- IQN integration replacing broken C51 (Candle scatter_add bug)
- CVaR risk-aware action selection
- State dimension consolidation (51 is canonical)
- NaN panic fix, Adam epsilon fix per Rainbow paper
Verified against 20+ papers and 2026 SOTA.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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