Task 479: Add Connective Prose Between EP03 Consecutive Explorations

Status: DONE

Summary

EP03 had 2 pairs of consecutive explorations with no connective prose:

1. exploration-01 → exploration-03: Mass boundary chart → cruising speed 3000 km/s verification
2. exploration-06 → exploration-02: 6-phase thrust sequence → navigation crisis accuracy

Impact

• Eliminates all 0-prose exploration gaps in EP03
• Connects mass analysis → velocity verification and propulsion → navigation threads