Rebuild branch1_no_time_blind ablation on leakage-free split

Rebuild branch1_no_boolean_blind ablation on leakage-free split

Rebuild branch1_no_error_based ablation on leakage-free split

Rebuild branch1_no_union_based ablation on leakage-free split

Model card: leakage-free Branch-1 numbers (F1 0.9907) + audit note

Retrain CNN candidate on leakage-free 5-class split (F1 0.9906)

Retrain DistilBERT candidate on leakage-free 5-class split (F1 0.9957)

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

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

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

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

Retrain branch2_v1: 3 features (sql_keyword_count, entropy, bigram_entropy), nu=0.001, scale_features=true

Retrain branch2_v1: 3 features (sql_keyword_count, entropy, bigram_entropy), nu=0.001, scale_features=true

Retrain branch2_v1: 3 features (sql_keyword_count, entropy, bigram_entropy), nu=0.001, scale_features=true

Update model card: 3-branch, branch terminology, 5-class comparison + ablations + session model

Add branch1_no_union_based

Add branch1_no_time_blind

Add branch1_no_error_based

Add branch1_no_boolean_blind

Add branch2_zeroday

Add branch3_v1

Remove stale pre-rename folder nhanh2_v1 (dup of branch*_v1)

Remove stale pre-rename folder nhanh1_v1 (dup of branch*_v1)

Branch1 5-class comparison: CNN + SQL-keyword-aware char tokenizer

Branch1 5-class comparison: DistilBERT fine-tune (distilbert-base-uncased)

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Add model card

Nhanh 2: One-Class SVM, AUC=0.90, FPR=0.3%, detection_rate=20.7%

Nhanh 1: TF-IDF+LogReg, F1-macro=0.9822

initial commit