pub static MATVIEW_FANOUT_BUFFERED: AtomicU64Expand description
v7.39 — diagnostic counter: how many aggregate scans took the sharded path (read by benches to ground-truth activation). v7.39 (round 740) — matview delta ground-truth counters (the r735 lesson: a green content pin cannot distinguish “delta applied” from “silently fell back to full”; these can).