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.

external_factors/EXTF_GOLD_CERTIFICATE.json

@@ -0,0 +1,11 @@
+{
+  "status": "FAIL",
+  "roi_actual": 36.661993600015705,
+  "roi_baseline": 181.81,
+  "trades": 1739,
+  "sharpe": 1.67819699388318,
+  "extf_version": "V4 (baked_into_prefect)",
+  "resolution": "5s_scan_high_res",
+  "data_period": "56 Days (Actual)",
+  "acb_signals_verified": true
+}