# Rollback V51.0

V51 does not alter the database. To rollback code only:

1. Restore these files from your pre-install backup:
   - `wr_chairman_supreme_decision_ai_v51_0.php`
   - `analysis_chairman_v51_supreme.php`
   - `Chairman/supreme/ChairmanSupremeDecisionEngineV51.php`
2. Delete `Chairman/api/api_supreme_v51.php` if it did not previously exist.
3. Optionally delete `runtime/cache/v51/` snapshots.

No SQL rollback is required.
