My WordPress site is practically launch-ready, yet a handful of functional details still need tightening. The design is locked in; what remains is a clean-up of the inner workings so everything runs flawlessly once the site goes public. The focus is strictly on functionality and features. I need an expert who is equally comfortable tweaking plugin settings and writing custom code: • Fine-tune the e-commerce plugins (payment gateways, shipping rules, tax calculations, email notifications, and any lingering console errors). • Review existing custom snippets, refactor where necessary, and remove any redundant code that could slow the site or cause conflicts later. • Confirm that the adjusted features play nicely with the current theme and other plugins, with no PHP warnings in debug mode. • End-to-end testing: guest checkout, user account creation, order management in the back office, and automated transactional emails. • Provide a concise hand-off note summarizing changes, so future updates won’t undo today’s fixes. Acceptance criteria: zero fatal errors or warnings in the log, all checkout scenarios pass, and Lighthouse performance scores remain at or above current levels. Everything else—layout, copy, images—already meets spec. Once these tasks are complete and verified, we can flip the switch and launch.