Skill for upgrading deployed TYPO3 project instances across major LTS versions
Use when upgrading a deployed TYPO3 project/instance to a new LTS version (v14.3 LTS is the current target, released 2026-04-21) — migrating site configuration, TypoScript, templates, Docker infrastructure, and database. Includes #109585 post-upgrade wizard and Camino theme migration. Not for extension code upgrades (use typo3-extension-upgrade instead).
