Prompt Engineering for Log Diagnosis — What Actually Works With Gemini

All tests run on an 8-year-old MacBook Air. "Analyze this log" produces a generic answer. "You are an Android specialist. Identify the root cause and the specific fix." produces something useful. Prompt design matters more than most people expect. Here's what I iterated through for HiyokoLogcat's diagnosis feature. Version 1: too vague Analyze this Android logcat output and tell me what's wrong. [logs] Result: long explanations of what logcat is, generic advice about NullPointerExceptions, no sp