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.

prod/prefect.yaml

@@ -0,0 +1,59 @@
+# Prefect Configuration for DOLPHIN Scan Bridge Daemon
+# 
+# Usage:
+#   1. Create deployment: python scan_bridge_deploy.py create
+#   2. Start worker: prefect worker start --pool dolphin-daemon-pool
+#
+
+name: dolphin-scan-bridge
+
+# Build configuration
+build:
+  - prefect.deployments.steps.set_working_directory:
+      directory: /mnt/dolphinng5_predict/prod
+
+# Pull configuration
+pull:
+  - prefect.deployments.steps.set_working_directory:
+      directory: /mnt/dolphinng5_predict/prod
+
+# Deployments
+deployments:
+  - name: scan-bridge-daemon
+    description: |
+      Long-running daemon that supervises the scan bridge service.
+      Monitors health every 30s and restarts on failure.
+    entrypoint: scan_bridge_prefect_daemon.py:scan_bridge_daemon_flow
+    work_pool:
+      name: dolphin-daemon-pool
+      work_queue_name: default
+    parameters: {}
+    
+    # Schedule - run continuously (no schedule, always on)
+    schedules: []
+    
+    # Enforcement
+    enforce_parameter_schema: false
+    
+    # Concurrency - only one instance
+    concurrency_limit: 1
+    
+    # Tags
+    tags:
+      - daemon
+      - infrastructure
+      - scan-bridge
+
+  - name: scan-bridge-health-check
+    description: |
+      Standalone health check for scan bridge.
+      Can be scheduled independently for monitoring.
+    entrypoint: scan_bridge_prefect_daemon.py:quick_health_check
+    work_pool:
+      name: dolphin-daemon-pool
+      work_queue_name: default
+    parameters: {}
+    schedules: []  # Add schedule here for periodic checks
+    tags:
+      - health-check
+      - monitoring