Engineer-grade debugging discipline for any codebase. Invoke this skill before writing code on any non-trivial task AND every time you fix a bug, crash, build error, UI regression, flaky test, or unexpected behaviour. It enforces a structured `DEBUG_LOG.md` protocol, an *active pre-flight* grep-base
Engineer-grade debugging discipline for any codebase. Invoke this skill before writing code on any non-trivial task AND every time you fix a bug, crash, build error, UI regression, flaky test, or unexpected behaviour. It enforces a structured `DEBUG_LOG.md` protocol, an *active pre-flight* grep-based retrieval of applicable prevention rules, a "think before coding" five-item plan, and a pre-mortem