Structured logging workflow for debugging code paths with per-run log files in .context/slog. Use when the user says "use slog", asks for structured logging, wants you to instrument a flow, run it, and inspect logs. Triggers on requests like "use slog", "add structured logs", "log this flow", or "debug with slog".
Apply Kent Beck's Test Desiderata to plan, add, rewrite, or review tests. Use when Codex is designing a test strategy, adding or changing unit/integration/e2e tests, reproducing a bug with a failing test, reviewing test quality, deciding what level of test to write, or explaining test tradeoffs.