Phase 13: Dedicated Debug Agent - 3 plans in 2 waves Wave 1: - 13-01: Create gsd-debugger agent with consolidated debugging expertise Wave 2 (parallel): - 13-02: Refactor /gsd:debug to thin orchestrator - 13-03: Deprecate debugging reference files with agent pointers Goal: ~95% context reduction in orchestrator (2,400 → 150 lines) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>