Files
l0ng-ai a249379bf8 fix(machine): format the three items and stop reading the tree per persist
`rustfmt` is a required check and was red on three hunks of this branch:
`owner_of`'s signature, the `--cwd` argv in `tab_new`'s adopt test, and the
two `tab_create` calls in `the_document_being_replaced_is_kept_beside_it`.

`keep_a_generation` also read the whole document before asking whether it
was going to keep anything. It runs on every persist — pane facts alone
flush every couple of seconds — and answers "too soon" on almost all of
them, so that was a full read of `machine.json` per write to produce one
copy every five minutes. The spacing check moves ahead of the read; the
`NotFound` arm still covers the machine that has never written a tree.

And a line continuation was missing from an assertion message in
`a_typed_name_waits_for_the_create_rather_than_racing_it`, so the failure
would have printed eighteen spaces mid-sentence.

Claude-Session: https://claude.ai/code/session_01JRqYZ9E153WpSHGS2AW3BM
2026-09-10 13:57:54 +08:00
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