December 2025 — ValveSoftware/Proton Key features delivered: - Proton Release Version Update: bumped Proton configuration version to reflect the new release (commits: 540c0e535704f29c9b174a99f1e962b5ecd8725c). This enables downstream compatibility checks and accurate release signaling. Major bugs fixed: - No user-facing bugs fixed this month. The work focused on release readiness and traceability (CW-Bug-Id: #24524) to prepare for subsequent fixes. Overall impact and accomplishments: - Improved release readiness and traceability by aligning code changes with bug-tracking workflows; ensured compatibility signaling for the next Proton release across supported games and environments. Technologies/skills demonstrated: - Release engineering, version management, commit hygiene, bug-tracking integration, repository maintenance for Proton; cross-functional coordination to align development with release processes.

September 2025 (ValveSoftware/Proton) focused on reliability improvements in the prefix creation workflow. Delivered a targeted bug fix to ensure the creation sync guard file is cleaned up when newer prefixes are removed, preventing failures in creating the current prefix. This reduces build/run interruptions and improves user experience in environments relying on Proton's prefix management. The change is isolated to a single commit, minimizing risk and enabling faster rollback if needed.