7 pre-upgrade checks for WordPress major version jumps

WordPress major upgrades (e.g., 5.x to 6.x) introduce API deprecations, PHP requirement bumps, and core block changes that can break multi-site operations. A seven-item checklist covers PHP version compatibility, plugin 'Tested up to' audits, theme and child-theme hooks, database backups, and more. WP-CLI commands help inventory plugins and verify clean JSON output before upgrading.