Layer A additive: three mapped-pinned buffers added to GpuDqnTrainer.
- wiener_state_buf (141 floats) — Pearl D state (47 producers × 3 floats:
sample_var, diff_var, x_lag). Per `feedback_no_htod_htoh_only_mapped_pinned`.
- clamp_engage_per_block_buf (2048 ints) — Pearl C engagement counters
(8 param-groups × 256 max blocks per Adam launch).
- producer_step_scratch_buf (47 floats) — per-producer per-step
step_observation output. Host applies Pearls A+D to map step_obs to
ISV bound slot via pearls_ad_update (Task A3, pending).
All three zero-initialized at construction (Pearl A sentinels). Reset
registry entries follow in Task A12.
No consumers wired yet — buffers are reserved but unread. Behavior
unchanged. cargo check clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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