[auto] Update SAMBA models and signals

models/meta_optionB.json

@@ -1,14 +1,14 @@
 {
   "option": "B",
-  "trained_at": "2026-05-08T01:57:48.050525",
-  "elapsed_sec": 2147.5,
+  "trained_at": "2026-05-09T01:17:02.376279",
+  "elapsed_sec": 1736.4,
   "winning_loss": "evar",
-  "test_ann_return": 0.2476,
-  "test_ann_vol": 0.2174,
-  "test_sharpe": 1.1392,
-  "test_max_dd": -0.3218,
-  "test_hit_rate": 0.5702,
-  "test_start": "2023-08-17",
+  "test_ann_return": 0.2619,
+  "test_ann_vol": 0.1959,
+  "test_sharpe": 1.3373,
+  "test_max_dd": -0.2345,
+  "test_hit_rate": 0.5863,
+  "test_start": "2023-08-18",
   "n_params": 66800,
   "n_assets": 16,
   "tickers": [
@@ -45,20 +45,20 @@
   "all_results": {
     "sharpe": {
       "loss_fn": "sharpe",
-      "test_ann_ret": 0.2324,
-      "test_sharpe": 1.1525,
-      "test_ann_vol": 0.2016,
-      "test_max_dd": -0.223,
-      "test_hit_rate": 0.5482,
+      "test_ann_ret": 0.21,
+      "test_sharpe": 1.3422,
+      "test_ann_vol": 0.1565,
+      "test_max_dd": -0.1899,
+      "test_hit_rate": 0.5585,
       "n_params": 66800
     },
     "evar": {
       "loss_fn": "evar",
-      "test_ann_ret": 0.2476,
-      "test_sharpe": 1.1392,
-      "test_ann_vol": 0.2174,
-      "test_max_dd": -0.3218,
-      "test_hit_rate": 0.5702,
+      "test_ann_ret": 0.2619,
+      "test_sharpe": 1.3373,
+      "test_ann_vol": 0.1959,
+      "test_max_dd": -0.2345,
+      "test_hit_rate": 0.5863,
       "n_params": 66800
     }
   }