The cold-login REQ storm's remaining emitters are unpinned (the suspected
per-contact list loops don't exist; mutes are already batched). Every
sub/list flows through the shimmed pool.sub, so recordReq() there aggregates
kinds + relay fan-out + emitting call site per 10s window. Zero-cost when
off; arm with localStorage bitvid:reqTrace=1 (auto in dev mode), read
[req-trace] logs or window.__bitvidReqTrace.report().
One traced cold login on unstable will name the storm's sources; the
batching/deferral pass follows from that data.
Tests: tests/req-telemetry.test.mjs (3).
Co-Authored-By: Claude Fable 5 <[email protected]>