5-phase protocol (SCOPE → TRACE → DIAGNOSE → FIX → VERIFY) for systematically repairing entire features/modules. Includes bidirectional dependency tracing, root-cause confirmation, risk labeling, 3-strike architecture escalation, and phase-skip guards. Cherry-picked from PR #388 (avinashchby). Co-Authored-By: avinashchby <24788443+avinashchby@users.noreply.github.com> Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>