- Exposure aux kernel -> f32 scratch -> bf16 cast -> backward_fc_layer GEMM
- Weight + bias gradients accumulated into grad_buf (pure GPU, zero CPU sync)
- CEA warmup: linear decay 1.0->base over 25% of epochs
- OFI epoch gate: disabled for first 5 epochs
- Exposure aux decay: base -> 10% over warmup_epochs
- Removed dead v6 fields: loss_aversion, beta_penalty, regret_blend, trade_clustering_penalty
from ExperienceCollectorConfig (kernel no longer reads them)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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