During January 2026, Bananano343 developed a nonce-based message submission security mechanism for the traPtitech/traQ repository, addressing the challenge of duplicate message submissions in concurrent environments. By introducing a nonce system within the backend, they enhanced message integrity and supported idempotent operations, thereby improving the reliability of the messaging workflow. The implementation required careful backend development using Go and a strong focus on API design, with disciplined version control practices throughout the process. Although no bugs were fixed during this period, the work demonstrated depth in security-focused engineering and contributed to a more robust and trustworthy messaging platform.