TYPO3 Core Contributions Guide for contributing to TYPO3 Core: Forge issues, Gerrit patches, CI debugging, and review workflows. When to Use - Forge issue analysis or creation ( ) - Patch submission, CI debugging, Gerrit review workflow - Commit message formatting, cherry-picks, rebasing Prerequisites Run to check: TYPO3.org account, Gerrit SSH ( ), Git email matching Gerrit. See . Workflow 1. Setup : Account + environment ( , ) 2. Branch : 3. Analyze : Understand root cause, reproduction steps, affected versions before coding 4. Develop : Implement fix + tests, validate with typo3-conformanc…