What problem does it solve? Hard bugs and performance regressions resist casual code reading; without a reproducible signal, debugging devolves into guessing. This Skill enforces a disciplined diagnosis loop that builds a tight pass/fail feedback signal first, then reproduces, minimizes, hypothesizes, instruments, fixes, and cleans up. ## Core Features & Use Cases - Feedback Loop Construction: Ten ordered strategies for building a red-capable repro command, from failing tests and curl scripts to bisection harnesses, differential loops, and human-in-the-loop bash scripts. - Structured Hypothesis Testing: Generates 3-5 ranked, falsifiable hypotheses before testing, then instruments with tagged debug logs and one-variable-at-a-time probes. - Regression Lockdown: Turns the minimized repro into a regression test at a correct seam, verifies the fix against the original scenario, and removes all debug instrumentation. - Use Case: A user reports an intermittent export failure in production. The Skill guides building a deterministic replay loop from a captured request, minimizing the failing scenario, ranking hypotheses, and landing a fix with a regression test. ## Quick Start Ask the agent to diagnose the bug you are experiencing and describe the exact symptom, error message, or slowdown you observed.
