What problem does it solve? Bug reports often get fixed by guesswork, leading to shallow patches that miss the real cause. This Skill enforces a disciplined reproduce → investigate → fix → verify workflow so every diagnosis is backed by evidence and every fix is verified against the original scenario. ## Core Features & Use Cases - Structured Reproduction: Establishes the exact symptom, trigger, and environment before investigating, including intermittent and performance issues with measured baselines. - Falsifiable Hypothesis Testing: Runs targeted probes that confirm or reject hypotheses one variable at a time, with tagged temporary instrumentation for clean removal. - Regression-Verified Fixes: Adds a regression test at the real failure seam, observes it fail before the fix, and reruns the original scenario to close the investigation. - Use Case: A user reports that switching projects resets their filters. The Skill guides the agent to reproduce the reset, trace the state management cause, add a failing regression test, apply the fix, and verify the original scenario end to end. ## Quick Start Diagnose why switching projects resets my filters: reproduce the issue, find the root cause with evidence, fix it, and verify the original scenario.
