jgrusewski
d5e270e18b
fix: Components 2+5 fully GPU — zero CPU compute, zero copies
xLSTM: qlstm_step kernel reads q_stats_buf directly on device, updates
C matrix on device, writes context[8] to device buffer. qlstm_train_step
runs SGD on device. No DtoH readback.
RK4 ODE: liquid_tau_rk4_step kernel reads per_branch_q_gap_ema (device),
context (device), writes liquid_mod (device). No pinned memory — plain
CudaSlice. Replaces CPU update_liquid_tau entirely.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>