debug

Systematic debugging for local development. Enforces root cause investigation — never implements fixes. 5-phase: Triage, Reproduce & Comprehend, Investigate, Classify, Report & Recommend. Classifies root causes as dev environment/config vs code bugs. Uses tools aggressively for observable verification — runs commands, queries state, checks actual output. Includes triage playbooks, hypothesis-test-refine cycles, tool patterns, agent metacognition (loop detection, strategy switching, confidence calibration), escalation heuristics. Presents root cause findings with recommended fix strategy and hands off to implementer. Two autonomy modes: Supervised (propose diagnostic mutations, wait for approval) and Delegated (iterate freely within approved action classes). Composable with /implement, /qa, /ship, /tdd, /explore. Triggers: debug, fix bug, root cause, why is this failing, investigate error, diagnose, troubleshoot, something broken, test failure, crash, regression, stack trace, error message, it worked before, flaky test, wrong output, not working, build failure, type error, exception, debugging.