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/pyproject.toml

@@ -0,0 +1,40 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "nautilus-dolphin"
+version = "0.1.0"
+description = "DOLPHIN NG HD Nautilus Trading Components"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "nautilus_trader>=1.200.0",
+    "redis>=5.0.0",
+    "pandas>=2.0.0",
+    "numpy>=1.24.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0.0",
+    "pytest-asyncio>=0.21.0",
+    "pytest-cov>=4.0.0",
+    "black>=23.0.0",
+    "mypy>=1.0.0",
+]
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["nautilus_dolphin*"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+pythonpath = ["."]
+addopts = "-v --tb=short"
+markers = [
+    "slow: full 55-day backtest regression (~25 min per run). Skip with: pytest -m 'not slow'",
+]