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Enroll branch merge in RFC-022 write path (#345)

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Andrew Altshuler 2026-07-11 19:02:20 +03:00 • committed by GitHub
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docs/dev/rfc-022-027-architecture-review.md
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@ -432,8 +432,9 @@ retaining the public lifecycle status `Proposed`.
**Affected:** [RFC-022 §6.2](../rfcs/rfc-022-unified-write-path.md#62-branch-merge)
**Status:** Closed in specification on 2026-07-11; full merge-adapter conversion
remains rollout work rather than an architecture ambiguity.
**Status:** Closed in specification and implementation on 2026-07-11. Branch
merge captures an immutable source commit and revalidates only its incarnation;
the target publishes and recovers under its own exact authority token.
RFC-022 requires every `ReadSet` member to be arbitrated atomically by the
publish CAS. A CAS on reserved main cannot arbitrate a row on a named source
@ -516,6 +517,14 @@ performance.
> multi-process native-ref fencing. RFC-024 remains the false-contention
> narrowing step.
> **Branch-merge implementation disposition (2026-07-11):** branch merge uses
> the same coarse target token without pretending the source belongs to that
> atomic read set. Schema-v4 recovery persists the captured source parent,
> fixed merge/rollback ids, pre-minted exact transaction chains for multi-commit
> data effects, ref-only physical effects, and the complete logical delta. A later source advance remains harmless; a target
> advance after effects becomes `RecoveryRequired` and is compensated rather
> than re-parented.
### TIGHTENING-01 — symmetric Lance conflicts are not obviously an activation gate
RFC-023 correctly identifies Lance's directional filtered/unfiltered behavior.