Branch2: switch to LocalOutlierFactor (12 feat, scope-filtered D1+D3+D7) — DR@FPR5%=80.6%, AUC=0.929

branch2_v1/metadata.json

@@ -1,12 +1,28 @@
 {
-  "algorithm": "one_class_svm",
-  "contamination": 0.001,
+  "algorithm": "local_outlier_factor",
+  "contamination": 0.05,
+  "gamma": null,
+  "n_neighbors": 5,
   "random_seed": 42,
   "scale_features": true,
-  "log_transform_features": [],
+  "log_transform_features": [
+    "length",
+    "max_token_length",
+    "max_special_run",
+    "max_digit_run"
+  ],
   "feature_names": [
+    "length",
+    "special_char_ratio",
     "sql_keyword_count",
     "entropy",
-    "bigram_entropy"
+    "bigram_entropy",
+    "quote_imbalance",
+    "same_type_run_ratio",
+    "max_token_length",
+    "token_count",
+    "max_special_run",
+    "max_digit_run",
+    "paren_imbalance"
   ]
 }