Implements sequential phase consumption to ensure correct data sync order:
1. User accounts (first)
2. Referral relationships (depends on users)
3. Planting orders (depends on users and referrals)
Each phase must complete before the next starts, guaranteeing 100%
reliable data dependency ordering. After all phases complete, switches
to continuous parallel consumption for real-time updates.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>