Worked on stabilizing the core tooling for the jeejeelee/vllm repository by addressing a critical initialization bug in the Gemma4ToolParser component. Focused on backend development using Python, the work involved delivering a targeted patch to include the missing 'tools' parameter during parser instantiation, which resolved startup errors and improved the reliability of the parsing and tooling flow. No new features were introduced during this period, as the primary goal was to enhance maintainability and reduce downstream risk. The fix was thoroughly reviewed, committed, and prepared for integration, ensuring smoother runtime behavior and more robust backend infrastructure for future development.