Retrain branch1_v1 on leakage-free split (dedup pre-split); F1-macro 0.9822->0.9907

branch1_v1/metadata.json

@@ -2,11 +2,11 @@
   "version": "branch1_v1",
   "branch": "branch1_supervised_multiclass",
   "architecture": "tfidf_logreg",
-  "trained_at": "2026-07-16T12:16:08",
+  "trained_at": "2026-08-20T01:02:50",
   "train_rows": 54236,
   "test_rows": 13560,
-  "f1_macro": 0.9821905121114611,
-  "train_time_s": 14.00293961600255,
+  "f1_macro": 0.9906716828805351,
+  "train_time_s": 14.267253901998629,
   "labels": {
     "0": "normal",
     "1": "union_based",

branch1_v1/model.joblib

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:033baac14b25eefa63c81189aec21b08b9c579545ec2ae5bed2170cf7aafe404
+oid sha256:9d70e1856c1191b1fd3a3d2dc5850c914909863c399a0babc791b4833162fead
 size 2000943

branch1_v1/vectorizer.joblib

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f210844f1d49f9c0042c71ded78287f3522480166ab9496cfdbcf9879d453144
-size 1680347
+oid sha256:40af4ce25249ad3fd139ec1f742be0c75872b9ce760f26340286d13c767a2577
+size 1680112