From 741de87ce25d105a0843b6284e740c10f9844237 Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@nousresearch.com>
Date: Sun, 26 Jul 2026 23:19:21 +0000
Subject: [PATCH] perf: trim persisted ML fold metadata

---
 config/ml_weights.json                | 6752 +------------------------
 ml/optimizer.py                       |   10 +-
 tests/test_ml_optimizer_validation.py |   18 +
 3 files changed, 29 insertions(+), 6751 deletions(-)

diff --git a/config/ml_weights.json b/config/ml_weights.json
index 59d4347..90da360 100644
--- a/config/ml_weights.json
+++ b/config/ml_weights.json
@@ -50,1012 +50,6 @@
     "folds": [
       {
         "fold": 1,
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@@ -1082,1466 +76,6 @@
       },
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-          2704,
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-          2708,
-          2709,
-          2710,
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-          2712,
-          2713,
-          2714,
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-          2717,
-          2718,
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-          2725,
-          2726,
-          2727
-        ],
         "weights": {
           "drawdown": 0.6216,
           "reserve_risk": 0.1302,
@@ -6919,7 +171,7 @@
       "start": "2018-02-01",
       "end": "2025-07-26"
     },
-    "trained_at": "2026-07-26T23:17:28.407380+00:00"
+    "trained_at": "2026-07-26T23:19:01.231759+00:00"
   },
   "comparison": {
     "equal_weight": [
@@ -7127,5 +379,5 @@
       }
     ]
   },
-  "trained_at": "2026-07-26T23:17:28.407380+00:00"
+  "trained_at": "2026-07-26T23:19:01.231759+00:00"
 }
\ No newline at end of file
diff --git a/ml/optimizer.py b/ml/optimizer.py
index 8b0d2d3..b00ed9c 100644
--- a/ml/optimizer.py
+++ b/ml/optimizer.py
@@ -164,6 +164,14 @@ def viable_classification_splits(y, splits):
         yield train_idx, val_idx
 
 
+def artifact_fold_results(fold_results):
+    """Strip training-only row indexes from the persisted ML artifact."""
+    return [
+        {key: value for key, value in fold.items() if key not in {"train_idx", "val_idx"}}
+        for fold in fold_results
+    ]
+
+
 def _build_model():
     return GradientBoostingClassifier(
         n_estimators=300,
@@ -503,7 +511,7 @@ def train_model(rows):
             "mean_recall": round(float(np.mean(cv_recall)), 4),
             "validation_method": "purged_expanding_window",
             "label_horizon_days": LABEL_HORIZON_DAYS,
-            "folds": fold_results,
+            "folds": artifact_fold_results(fold_results),
         },
         "training_info": {
             "n_samples": len(labeled),
diff --git a/tests/test_ml_optimizer_validation.py b/tests/test_ml_optimizer_validation.py
index d668616..235cc22 100644
--- a/tests/test_ml_optimizer_validation.py
+++ b/tests/test_ml_optimizer_validation.py
@@ -87,3 +87,21 @@ def test_classification_splits_skip_training_windows_with_one_class():
 
     assert len(viable) == 1
     assert viable[0][0].tolist() == [0, 1, 3, 4]
+
+
+def test_artifact_folds_omit_large_internal_index_arrays():
+    folds = [{
+        "fold": 1,
+        "train_idx": [0, 1],
+        "val_idx": [2, 3],
+        "weights": {"fear_greed": 1.0},
+        "date_ranges": {"validation": "2024-01-01 to 2024-01-02"},
+    }]
+
+    saved = optimizer.artifact_fold_results(folds)
+
+    assert saved == [{
+        "fold": 1,
+        "weights": {"fear_greed": 1.0},
+        "date_ranges": {"validation": "2024-01-01 to 2024-01-02"},
+    }]