[abmmhasan]

ArrayKit 5.3.2 — release candidate

Runwire 3.0-only optional integration. No 2.x support claims, jobs or mandatory Runwire runtime dependency.

Implemented batches

• A (R01–R02): guarded recursive sorting refuses unbounded object comparisons; dot-path rename/move stages array mutations before commit; regressions cover failures and overlaps.
• B (R03–R05): reference-safe snapshots (with deterministic cycle rejection and shallow object identity), source-origin cache refresh, and canonical numeric namespaces for lazy/layered config; regressions added.
• C (R06–R11): sampling validation, overflow-safe averages/medians, NaN sign classification, enum fallback typing, and public-only collection forwarding; exact Runwire 3.0.0 on PHP 8.4/8.5.
• D (implementation): benchmark against immediate previous 5.3.1 tag, snapshot correctness workload, Sphinx warnings-as-errors workflow, updated docs/migration, PHPForge 8.4/8.5 stable/lowest matrix, clean install and worker-soak gates.
• Final release acceptance: all required jobs passed on final commit 91d7b3ba5b34b76183ba3cda45f7e98c647aa597 — full workflow 40997964621. The 2% throughput comparator on a shared runner is explicitly unverified (stable environment not asserted); it is not a green performance-regression guarantee.

Constraints

• No public named-argument changes, raised PHP floor or mandatory Runwire installation.
• No weakened analysis/quality thresholds.
• No merge, release tag or package publication in this PR.

Plan and tracker: ArrayKit 5.3.2 review and release plan.