Files
foxhunt/ml/src/ppo
jgrusewski 6ffa38cc04 feat(ml): NaN gradient detection with auto-halt during training
Add check_gradients_finite() utility that scans GradStore for NaN/Inf
values. Wire into DQN (after gradient accumulation, before optimizer step)
and PPO (both MLP and LSTM training paths, after backward pass).

Prevents silent model corruption from exploding gradients or numerical
instability — training halts immediately with a descriptive error.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-23 11:26:49 +01:00
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