소개
This skill provides a structured methodology for identifying the source of complex bugs that manifest deep within a software call stack. By prioritizing backward tracing over superficial fixes, it guides users through observing symptoms, instrumenting code with manual stack traces, and implementing multi-layered defense-in-depth validation to prevent regression. It is particularly effective for debugging test pollution, incorrect environment configurations, and data corruption issues where the manifestation point is far removed from the actual error source.