feat: add duplicate training log entry for model evaluation

- Added a new entry to the training log for the LightGBM model, including date, AUC, sample count, and model path.
- This entry mirrors an existing one, potentially for tracking model performance over time.

models/training_log.json

@@ -18,5 +18,11 @@
     "auc": 0.5405,
     "samples": 1704,
     "model_path": "models/lgbm_filter.pkl"
+  },
+  {
+    "date": "2026-03-01T18:54:48.200006",
+    "auc": 0.5405,
+    "samples": 1704,
+    "model_path": "models/lgbm_filter.pkl"
   }
 ]