revision becomes a request-body control field on BusinessConfigPatch. It is
never a setting: apply() and is_complete() ignore it, so the stored wire
never gains a revision key, and a PUT body that omits it keeps
last-write-wins for callers that never read the revision back.
The SPA records the revision it read, echoes it on every partial submit, and
on a 409 re-reads the stored values into the form and tells the operator to
recheck what they changed. Without that reload every retry would 409
forever; if the reload itself fails the SPA falls back to last-write-wins
rather than trapping the operator. The control field is excluded from the
empty-patch check so echoing it never counts as a change.
The compare-then-write is deliberately not atomic. Without a Lua script an
optimistic lock still has a residual window in which two requests racing
inside the same tick both pass and the later one wins; the window stays
small because a patch carries only the fields the operator actually changed.
notify.rs gained 18 lines before line 700, so its anchors in deployment.md,
opengaps.md and retired.md shifted by +18. Every one was checked against the
real line content, since the anchor audit only flags blank targets.
Gates: rust fmt/clippy clean, cargo test 87 passed 2 ignored, node --test
web/config.test.mjs 18 passed, docs_check/run_all.sh 6/6.
anonsaber
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