- Read new env vars: BROKER_GATEWAY_SERVICE_URL, DATA_ACQUISITION_SERVICE_URL,
ML_SERVICE_URL, TRADING_AGENT_SERVICE_URL
- Create lazy channels: trading channel shared by trading/risk/config proxies,
separate channels for ML, broker, data_acq, trading_agent
- Register 7 new services on router with auth interceptor
- Update reflection service with all 6 new proto descriptors
- Add broker/data_acq/trading_agent to health check backend list
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>