Review 1 - process and timeout safety
- Confirmed the helper disables Z3 parallel mode before creating the context.
- Confirmed target solver writes occur only after fork in the child.
- Audited normal, timeout, oversized-response, read-error, and poll-error child
  reaping paths. Focused tests also observe an empty /proc child list.
- Deterministic delayed-child test confirms timeout kills only the child and the
  next query reuses the same parent generation.

Review 2 - protocol and correctness authority
- Metadata parser requires one complete form, bounded numeric fields, exact
  status agreement, warm/generation consistency, and one-step query sequencing.
- Missing or regressing metadata evicts the context before reuse.
- SAT models are parsed before snapshot retention and validated again by the
  existing backend and QueryStore. UNSAT authorization semantics are unchanged.

Review 3 - configuration and integration
- native_state_fork is an explicit Boolean restricted to persistent QF_BV.
- It is rejected on the same backend as cvc5 learned-literal publication.
- Deployment mode does not change the F426 capability/context identity.
- Both LLVM build trees link the pinned Z3 5.0.0 library and pass full gates.

Review 4 - claim and documentation integrity
- Replaced preliminary oracle timings with the final sealed runs.
- Documented configuration, tests, benchmark protocol, implementation details,
  research provenance, and known limitations.
- Explicitly excluded portable heap transport, guaranteed clause retention, and
  application-level coverage/bug-finding claims.

Residual risks
- Z3 does not define a stable serialized internal-state ABI; the snapshot is
  deliberately process-local and version-local.
- Per-target fork remains serial per backend, and COW memory pressure is not yet
  governed by an adaptive concurrent-child quota.
- Public multi-node paired campaigns are still required for R-level uplift.