In March 2025, the submission workflow in Coachbot-Swarm/submission_repo gained reliability and scalability through targeted improvements. Key features delivered: 1) Test Harness and Submission Validation established a basic test submission placeholder to verify the submission process; 2) Entity Identifier Abstraction with Virtual IDs introduced to replace physical IDs, enabling greater flexibility and cross-system abstraction; 3) Rate Limiting Stability Tuning adjusted the delay to mitigate timing-related issues and improve stability under load. Impact: improved testability, safer refactors, and more stable submission throughput, reducing production risk and enabling easier future enhancements. Technologies/skills demonstrated include test automation patterns, ID abstraction, and rate-limiter performance tuning.