precompute_features prints Format: f32 (v2), OFI_DIM=20 (was hardcoded v1). FXCACHE_VERSION exported as pub const for external use. graph_adam_m/v/step removed (dead buffers). q_mean_ema_ptr removed from c51_grad_kernel (ISV replaced Q-drift penalty). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>