Function ui_flush 

pub fn ui_flush(added_unix: u64) -> String

The gateway’s flush id for a UI write’s handle: ui-<added_unix>-<uuid>. The time is the order a consume reads off two UI handles of one path (design 2026-09-19, R7’s “later”): a citation that moved to a LATER gateway write supersedes an entry, one that moved to an earlier one leaves it live. One gateway’s clock orders its own writes exactly; two replicas’ clocks are the residual, and a tie or an inversion between them costs a surfaced conflict, never a silent drop.