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/dvae/exp12_convnext_gate_results.json

@@ -0,0 +1,78 @@
+{
+  "baseline": {
+    "config": "0_baseline",
+    "T": 2155,
+    "ROI": 181.8069,
+    "DD": 23.6916,
+    "Calmar": 7.6739,
+    "elapsed_s": 411.0,
+    "scale_mean": 1.0883,
+    "scale_min": 1.0,
+    "scale_max": 1.63,
+    "n_scaled": 2156
+  },
+  "results": [
+    {
+      "config": "0_baseline",
+      "T": 2155,
+      "ROI": 181.8069,
+      "DD": 23.6916,
+      "Calmar": 7.6739,
+      "elapsed_s": 411.0,
+      "scale_mean": 1.0883,
+      "scale_min": 1.0,
+      "scale_max": 1.63,
+      "n_scaled": 2156
+    },
+    {
+      "config": "1_z10_analogue",
+      "T": 2155,
+      "ROI": 177.1364,
+      "DD": 23.6916,
+      "Calmar": 7.4768,
+      "elapsed_s": 429.5,
+      "scale_mean": 1.041,
+      "scale_min": 0.6597,
+      "scale_max": 1.63,
+      "n_scaled": 4312
+    },
+    {
+      "config": "2_z10_inv",
+      "T": 2155,
+      "ROI": 183.2151,
+      "DD": 23.6916,
+      "Calmar": 7.7333,
+      "elapsed_s": 517.9,
+      "scale_mean": 1.0451,
+      "scale_min": 1.0,
+      "scale_max": 1.63,
+      "n_scaled": 4312
+    },
+    {
+      "config": "3_zstd_gate",
+      "T": 2155,
+      "ROI": 181.7825,
+      "DD": 23.6916,
+      "Calmar": 7.6729,
+      "elapsed_s": 489.5,
+      "scale_mean": 1.0442,
+      "scale_min": 0.9955,
+      "scale_max": 1.63,
+      "n_scaled": 4312
+    },
+    {
+      "config": "4_z10_x_zstd",
+      "T": 2155,
+      "ROI": 177.1174,
+      "DD": 23.6916,
+      "Calmar": 7.476,
+      "elapsed_s": 504.2,
+      "scale_mean": 1.041,
+      "scale_min": 0.6568,
+      "scale_max": 1.63,
+      "n_scaled": 4312
+    }
+  ],
+  "model_epoch": 17,
+  "model_val_loss": 19.260574247143158
+}