Minimal Sufficient Evidence

Use this skill when a workflow is growing by accumulation: more tests, more metrics, more bug hypotheses, more template fields, more model variables, or more root-cause factors. The goal is not minimalism for its own sake; it is the smallest set that still distinguishes the important cases and supports the next decision.

Working rule

For every proposed artifact, ask:

1. What hypothesis, decision, or failure mode does this cover?
2. Is that already covered by something else with the same signal?
3. What breaks if we remove it?

Keep the item only when it adds independent signal, catches a distinct risk, or materially improves reproducibility.

Regression tests