Plan 03 human checkpoint passed. 07.3-03-SUMMARY.md written. ROADMAP: 07.3-03 checked, progress table updated to 3/3 Complete 2026-06-06. STATE: current_phase → 07.4, completed_phases → 12, completed_plans → 63. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>