Systematic Debugging

Consolidates Matt Pocock's diagnosing-bugs feedback-loop method with Obra's systematic-debugging, root-cause-tracing, and condition-based-waiting guidance (all MIT). Exact pins are recorded in sources.json.

Evidence-traced fixes, speculative-guard rejection, and measured baselines are adapted from Cursor's poteto-mode at commit 93b00b89ef425a9c1bac0d0b317dfc49c930ac99 (MIT, Copyright (c) 2026 Cursor).

No fix before reproducible evidence and root-cause investigation.

Redact secrets from commands, logs, traces, screenshots, and reports. Keep credentials in environment variables.

1. Build a tight feedback loop

Create one command that exercises the user's exact symptom and can turn red on the bug and green on a fix. Prefer, in order: