Add IV35-H2-S5 release metadata

experimental/iv35-h2-s5-internvl3.5-8b/hmm_formal/release_metadata.json

@@ -0,0 +1,22 @@
+{
+  "release_status": "experimental",
+  "experiment_id": "IV35-H2-S5",
+  "checkpoint_path": "experimental/iv35-h2-s5-internvl3.5-8b/hmm_formal/checkpoint.eqx",
+  "checkpoint_sha256": "3c5f90c6ed76879ba465f7dd009e62a9c87a62905e8f77b8dfffe428527d2512",
+  "model_id": "OpenGVLab/InternVL3_5-8B",
+  "initialization": "scratch",
+  "stage": "formal",
+  "status": "PASS",
+  "epochs_completed": 50,
+  "best_validation_loss": 2.2352960828232438,
+  "train_sequences": 13170,
+  "validation_sequences": 1460,
+  "training_vocabulary_size": 151678,
+  "target_model_vocabulary_size": 151936,
+  "dataset_sha256": "64d6b9d990a366234e553f3de4d9adecb478b9493a4e519c031d71e87964417b",
+  "notes": [
+    "This is a neural-HMM prior, not an InternVL base-model checkpoint.",
+    "The checkpoint passed the recorded training and reload validation gates.",
+    "No downstream task-gain claim is made for this experimental release."
+  ]
+}