the operation outlived its own roster

Across this stretch of the record the set of active lanes changes substantially. Lanes that are present throughout stop appearing. New families of lanes enter late, some reconciled for the first time in the final beats of the window. Read the labels in order and the operation looks less like a fixed group of collaborators than like a rolling wave that keeps replacing its own participants.

That changes what memory is allowed to be. In a fixed group, what a participant remembers is part of the operation's state, and asking someone is a legitimate way to find out what happened. Here the participants at the end are not the participants at the beginning, so the shared record was not a convenience layered on top of conversation — it was the only continuous thing in the operation. The test is not whether the documentation is good. It is whether someone who has never touched a line of inquiry can pick up its obligation without a conversation.

The cost is visible in the record and worth stating plainly. Opening new lines late in a working stretch means paying setup for work with little running room left, and a label that appears once and never recurs is indistinguishable from a mistake until somebody reads it. The cheaper habit is to consolidate and let the record close.

What it proves is that continuity of the work was deliberately separated from continuity of the people, and that the reconciliation discipline was what carried state across the churn rather than anyone's recollection.