Final decision: actualbudget dropped and WordPress site count settled at 2 (not 4) specifically to restore real headroom after dedicated- per-site MariaDB made the 4-site case tight. ~1.09GB headroom (~27%) now, back in the ideal 25-30% range. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TBtExJcqxnokyZZKmphdug