Post-Phase 8 analysis identifying improvement opportunities: - High priority: batch HasChildren to fix 142% regression - Medium priority: N+1 query fixes (GetIdsForKeys, GetSchedulesByContentIds) - Low priority: split ContentPublishOperationService (1758 lines) Includes implementation roadmap and success metrics. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>