feat: add trained model artefacts from initial pipeline run

own_embedding_model.pt val_acc=100% (18MB EfficientNet-B0)
clip_database.pkl separation=0.1754 (3967 real, 3967 AI)
own_centroids.pkl sep=0.0329
ensemble_xgb.pkl test_auc=1.0000 (NOTE: leakage — CIFAKE 32x32
vs COCO large JPEGs; needs diverse dataset rerun)

Pipeline completed in ~100 min on RTX 4050 (6GB VRAM, Windows).

data/reference/ensemble_results.json

@@ -1,36 +1,18 @@
 {
   "cv_auc_mean": 1.0,
   "cv_auc_std": 0.0,
-  "cv_f1_mean": 0.9987,
-  "cv_f1_std": 0.0027,
-  "n_features": 26,
-  "n_samples": 1758,
+  "cv_f1_mean": 1.0,
+  "cv_f1_std": 0.0,
+  "test_auc": 1.0,
+  "test_f1": 1.0,
+  "test_accuracy": 1.0,
+  "best_iteration": 0,
+  "scale_pos_weight": 0.8001,
+  "n_features": 30,
+  "n_samples": 8925,
   "feature_importance": {
-    "own_embedding_detection": 5.215395,
-    "mahalanobis_distance": 1.226436,
-    "dct_frequency_artifacts": 0.146292,
-    "spectral_entropy": 0.058108,
-    "rgb_noise_covariance": 0.019202,
-    "patch_spectral_variance": 0.018705,
-    "natural_prior_deviation": 0.007064,
-    "ela_compression_analysis": 0.001725,
-    "clip_embedding_analysis": 0.001162,
-    "fft_radial_spectrum": 0.0,
-    "dct_coefficients": 0.0,
-    "wavelet_energy": 0.0,
-    "glcm_texture": 0.0,
-    "noise_residual": 0.0,
-    "lbp_texture": 0.0,
-    "edge_statistics": 0.0,
-    "color_correlation": 0.0,
-    "compression_artifacts": 0.0,
-    "eigenvalue_spread": 0.0,
-    "local_covariance_consistency": 0.0,
-    "patch_anisotropy_variance": 0.0,
-    "kl_divergence": 0.0,
-    "perturbation_stability": 0.0,
-    "dire_reconstruction_error": 0.0,
-    "prnu_camera_fingerprint": 0.0,
-    "metadata_forensics": 0.0
+    "f21": 2393.409668,
+    "f1": 2372.581787,
+    "f16": 2220.498535
   }
 }

data/reference/ensemble_xgb.pkl

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+size 21308

data/reference/own_centroids.pkl

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+version https://git-lfs.github.com/spec/v1
+oid sha256:a09d7bb9e755903451daa59e9266eb51372330eef1e4288f835a7c0c75fad122
+size 4426

data/reference/own_embedding_model.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:ac06cffb88fec51ac892c6c5e763b2af1ee2a7eeb83fc07640f195349f6b5867
+size 19220826