Static MOE_GROUPED_PREFILL_DISPATCHES 

pub static MOE_GROUPED_PREFILL_DISPATCHES: AtomicU64

Engagement counter for the glm5_next expert-grouped MoE PREFILL arm (MEMRA_MOE_GROUPED_PREFILL), incremented once per (layer, chunk) dispatch at the arm’s own call site. Same reason the fused-epilogue counter exists: the observation env vars divert dispatch, so a counter at the invocation is the only honest engagement receipt (LAW:wiring-assertions-match-prose). Read via moe_grouped_prefill_dispatches.