- DQN portfolio_tracker: Phase 1/2 complete logs warn→debug (noisy per-epoch) - risk: lazy_static→LazyLock, .map→.inspect, midpoint overflow fixes - risk: remove unused POSITION_PROCESSING_LATENCY, lazy_static dep - CI: default DEV_RELEASE=true for fast iteration (thin LTO, 24% faster) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>