Worked on the cloudwego/hertz repository to address a critical issue in identifier resolution for filenames containing dots, focusing on improving the robustness and maintainability of the codebase. Applied code refactoring techniques in Go, specifically replacing strings.SplitN with strings.LastIndex to ensure accurate extraction of dependency and type names from complex filenames. This targeted bug fix reduced edge-case failures in filename-based resolution, directly enhancing build reliability and the overall developer experience. The work demonstrated a strong grasp of string manipulation and thoughtful attention to long-term maintainability, resulting in a more reliable identifier resolution mechanism within the Go-based project.