Worked on stabilizing the message validation pipeline for the bytedance/deer-flow repository by addressing a critical JSON import issue that previously blocked proper parsing of message content. Focused on backend development using Python, the solution involved updating context_manager.py to correctly import the json module, which restored reliable validation across various payloads and reduced validation-time errors. This fix ensured that message content could be parsed and validated without runtime failures, improving the robustness of utility functions within the codebase. The work demonstrated attention to detail in debugging and maintaining backend systems, with all changes traceable to a specific commit for accountability.