Audits WooCommerce Subscriptions integrations across release changes, with a verified 9.2.0 baseline. Covers deprecated settings APIs, REST field contracts, per-product gifting migration, item-removal ownership and nonce changes, APFS script loading and legacy plan identity, switching, renewal discounts, PayPal validation, and HPOS stale saves. Use when upgrading Subscriptions, reviewing its changelog, replacing deprecated WCS calls, or diagnosing behavior that changed after an update. Includes a disposable WP-CLI smoke plugin; payment settlement and browser checkout require separate tests.
