grenadeandClaude Opus 5
813e49c43c
The gap-fill guard fixed the coarse half of #14 — Planck went from 0.175 s/block to 4.9 — and left the rest standing. Measured just now against a real ~30 s on Planck and ~6 s on Heisenberg: quantus 9.59 s plausible planck 4.919 s six times too fast heisenberg 0.052 s a hundred times too fast `record` stamped `observed_at` with `Utc::now()`, which runs *after* two RPC round trips and behind a 64-deep channel. On a remote endpoint those round trips are hundreds of milliseconds, so heads queue and then drain in a burst — a batch carrying near-identical observation times while their heights march on. `measured_interval` divides elapsed time by height difference and reads that as a chain producing blocks twenty times faster than it does. `observed_at` means "when this observer saw it", so it is now stamped where the frame is read off the socket: `subscribe_new_heads` sends a `SeenHead` carrying that moment and `record` uses it rather than asking the clock again. Every consumer improves at once, because the same field is the DB row, the ticker's gap, and the tip sample. Worth noting what this does *not* need: no threshold, no plausibility check, no discarding of samples. The measurement was always sound; it was being given the wrong time. Refs #14 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Jp6a8EDar9ueEhAxzep4V5