The B2 review of the first B1/B3 slice found five defects whose fixes were
not available to the packages that had to make them: each needed a change
to a surface those packages do not own. Rather than let them restate a
frozen fact locally, the lead amends the surfaces and the packages consume
them. Contract review 2026-07-28-A records all five with the weaker
alternative that was rejected for each.
- CommitEvidenceSigner::sign_event's parameter becomes signing_digest.
The message is SignedCommittedTransactionV1::signing_digest, which
binds key epoch and durability result around the canonical event; the
bare event digest is chain identity, not signature material. A doc line
was not enough: misuse is undetectable until after durability, and is
first observed by a mirror on another instance.
- TransactionEvidenceV1::actor() is new, exhaustive over all six
variants. A destination event's actor must restate the evidence's
source instance, and deriving it a second way store-side is what
produced the defect it closes.
- format::object_type_code becomes pub(crate) and recovery.rs's private
twin is deleted, so one table exists where three did.
- RefRecord gains from_target/target() in terms of RefTarget, with the
code table stated once per direction and an unknown kind refused by
value as CheckpointError::RefKind. Defaulting an unknown kind would
launder it into the next checkpoint within one interval.
- max_projection_objects is capped at MAX_CANONICAL_ITEMS and its default
lowered to it; max_projection_chunks likewise, and max_projection_bytes
against the transitive per-chunk allowance. The old default described a
projection no manifest could encode. Supporting a hundred million
objects requires a versioned chunked or indexed manifest design, not a
larger hostile-decode ceiling.
Both governing documents are updated where they now misstate a frozen
fact, including §6.4's claim that signing covers the event digest. §6.5
records the two carry-forwards from B3's first slice — production staging
use is incomplete, and expire() has no scheduler — and records that the
requested StoreEngine staging accessor is a pending amendment which must
not be a bare Arc<ProjectionStaging>, since a clone could outlive
EngineShared, survive release of the root LOCK, and keep serving a root
this process no longer holds.
No package file is touched: engine.rs, transaction.rs, and staging.rs
consume these in their own commits.
levcs-protocol 6 consumer tests, levcs-store 109 library tests.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Levi Neuwirth
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