Native readback of gpu_corr_indices / gpu_corrs_combo_indices / gpu_corrs_td (DtoH) and cudaMemset2D
erase of gpu_corrs, for GpuQuadJna's getCorrIndices/getCorrComboIndices/getCorrTdData/eraseGpuCorrs
(oracle TD-correlation path).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>