initial: import DOLPHIN baseline 2026-04-21 from dolphinng5_predict working tree

Includes core prod + GREEN/BLUE subsystems:
- prod/ (BLUE harness, configs, scripts, docs)
- nautilus_dolphin/ (GREEN Nautilus-native impl + dvae/ preserved)
- adaptive_exit/ (AEM engine + models/bucket_assignments.pkl)
- Observability/ (EsoF advisor, TUI, dashboards)
- external_factors/ (EsoF producer)
- mc_forewarning_qlabs_fork/ (MC regime/envelope)

Excludes runtime caches, logs, backups, and reproducible artifacts per .gitignore.

nautilus_dolphin/requirements.txt

@@ -0,0 +1,26 @@
+# DOLPHIN NG HD - Nautilus Trading System Requirements
+
+# Core Trading Framework
+nautilus_trader>=1.200.0
+
+# Redis (async client)
+redis[hiredis]>=5.0.0
+
+# Configuration
+pyyaml>=6.0
+python-dotenv>=1.0.0
+
+# Data Validation
+pydantic>=2.0.0
+
+# Monitoring (optional for Phase 1)
+prometheus-client>=0.20.0
+
+# Testing
+pytest>=8.0.0
+pytest-asyncio>=0.23.0
+pytest-cov>=4.1.0
+
+# Development
+black>=24.0.0
+ruff>=0.3.0