What problem does it solve? Bug reports often arrive with vague steps, missing environment details, or unverified claims, forcing fixers to guess which build failed and how. This Skill turns a report into a minimal, evidence-backed reproduction where every step carries its command, input, and quoted observed output. ## Core Features & Use Cases - Evidence-backed repro steps: Each step records the exact command or action, its input, and the quoted observed output; unexecuted steps are labeled untried, never passing. - Minimal repro derivation: Steps are removed one at a time with re-runs after each removal, so the surviving set is proven minimal by still-failing runs. - Environment and verdict tracking: Every verdict names the build id, platform, OS, and config, plus one controlled variation run and a diff against any prior repro. - Use Case: A support engineer receives a ticket claiming a crash on export. The Skill re-executes the reporter's steps on the named build, strips the repro to three minimal steps, confirms the failure also occurs on the prior release, and hands the fixer a dated markdown file with verdict and evidence. ## Quick Start Ask the assistant to reproduce the bug described in ticket 4821 on build 2.4.1 and produce minimal repro steps with environment evidence.