Diagnose

Source of truth for hard-bug and regression diagnosis with a tight feedback loop.

Adapted from mattpocock/skills diagnosing-bugs (MIT © 2026 Matt Pocock).

A discipline for hard bugs. Ordering is the value — build a tight pass/fail signal before hypothesizing. The loop is the verifier (environment oracle); hypotheses serve the loop, not the other way around. Skip phases only when explicitly justified.

Read references/research-basis.md when calibrating a move or making a research claim. Do not load by habit.

Entry gate — no loop, no hypotheses

If there is no on-demand failing signal — no failing test, script, CI artifact, or user repro you can run — stop. Do not hypothesize.

Route to: