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/exp13_v2_launcher.py

@@ -0,0 +1,46 @@
+"""
+exp13_v2_launcher.py — Run exp13 multiscale sweep with convnext_model_v2.json (ep=13).
+
+Changes vs default exp13:
+  - MODEL_1M  → convnext_model_v2.json  (calibration-fixed, always-positive z[13])
+  - PROXY_B_DIM → 13  (z[13] is proxy_B dim in v2, vs z[10] in ep=17)
+
+Everything else identical to exp13_multiscale_sweep.py.
+Results logged to ../../exp13_v2_screening_run.log
+
+Usage (from nautilus_dolphin/ dir):
+  python dvae/exp13_v2_launcher.py --subset 14 --top_k 20   # Phase 1 screening
+  python dvae/exp13_v2_launcher.py --subset 0  --top_k 0    # Full 56-day run
+
+Why v2 should be better:
+  ep=17 z[10]: ALWAYS NEGATIVE [-1.24, -0.30] → direct scaling configs hurt
+  v2   z[13]: ALWAYS POSITIVE [+0.17, +1.46] → direct scaling configs work correctly
+  Separation (proxy_B quartiles): 0.46 (ep=17) → 0.61 (v2) — 32% improvement
+"""
+import sys, os
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent.parent
+sys.path.insert(0, str(ROOT / 'nautilus_dolphin'))
+
+# ── patch model path and proxy_B dim before importing main ───────────────────
+MODEL_V2   = ROOT / 'nautilus_dolphin' / 'dvae' / 'convnext_model_v2.json'
+PROXY_B_V2 = 13   # z[13] r=+0.9332 for v2 ep=13 (auto-confirmed by proto_v2_query.py)
+
+assert MODEL_V2.exists(), f"v2 model not found: {MODEL_V2}"
+
+import dvae.exp13_multiscale_sweep as e13
+import dvae.convnext_sensor as cs
+
+# Patch module-level constants before main() runs
+e13.MODEL_1M    = MODEL_V2
+e13.PROXY_B_DIM = PROXY_B_V2
+cs.PROXY_B_DIM  = PROXY_B_V2   # sensor module also exports this
+
+print(f"[v2-launcher] MODEL_1M   → {MODEL_V2.name}")
+print(f"[v2-launcher] PROXY_B_DIM → {PROXY_B_V2}  (was 10)")
+print(f"[v2-launcher] v2 ep=13  val=18.002  z[13] r=+0.933  calibration=ALWAYS_POSITIVE")
+print()
+
+if __name__ == '__main__':
+    e13.main()